CN110080339A - A kind of secondary water-supply self-cleaning pipeline and automatically cleaning control method - Google Patents
A kind of secondary water-supply self-cleaning pipeline and automatically cleaning control method Download PDFInfo
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- CN110080339A CN110080339A CN201910415639.9A CN201910415639A CN110080339A CN 110080339 A CN110080339 A CN 110080339A CN 201910415639 A CN201910415639 A CN 201910415639A CN 110080339 A CN110080339 A CN 110080339A
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- pipeline
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- inner tube
- cleaning device
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- 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
- E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The present invention relates to a kind of secondary water-supply self-cleaning pipeline and automatically cleaning control method, including pipeline body, pipeline includes inner and outer tubes, and cooperation is equipped with automatically cleaning unit and position-limiting unit between inner and outer tubes；The both ends of any pipeline are respectively cooperating with equipped with rotating unit；Position-limiting unit is connect with controller.When needing to carry out automatically cleaning operation, control position-limiting unit triggers rotating unit, the rotating unit collective effect of pipe ends, rotate pipeline inner tube, using water flow and hydraulic pressure and automatically cleaning unit matching, automatically cleaning and the flushing of pipeline are completed, removes dirt and deposition in pipeline；The different realistic problem of evaluation criterions that are different, detecting and selecting that the present invention is based on the states of management work, self-cleaning management actively is carried out to pipeline by controller, reducing water quality detection bring not in place influences, it actively promotes the quality of domestic water, promote drinking water mouthfeel, greatly reduce due to the unqualified and bring healthy hidden danger of secondary water-supply detection.
Description
Technical field
The invention belongs to fetch water, catchment or the technical field of the device or method of water distribution, in particular to a kind of secondary water-supply
With self-cleaning pipeline and automatically cleaning control method.
Background technique
It is traditional that water is stored in water tank by running water pipe, is then passed through with increasing with water water supply
It is more and more to the energy for the water supply pattern consumption for being delivered to user after the water pressurization in water tank, start slowly to be eliminated, without negative
Pressure supply equipment initially enters water system as a kind of new water supply pattern.
For now, in many cities, there are diversity for city secondary water-supply mode, but are carrying out secondary water-supply
During, other than taking corresponding energy-saving protective measure, pollution should be also mainly prevented, mainly includes among these
Water pollution.
In the prior art, China constantly improve the national standard of Drinking Water, and has put into effect defending for Drinking Water
Raw specification, and stringenter standard is proposed to secondary water-supply Facilities Construction, but found according to practical water quality detection, by
Do not have in the state of management work, detect selected evaluation criterion difference, the detection to water quality is simultaneously not in place, and water quality is caused to be examined
Though surveying qualification rate is in normal scope, actual water quality assessment is still relatively low, affects the normal drinking water quality of people
Amount, while there is also the healthy hidden dangers of domestic water.
In addition to this, many families start to select purifier, however many purifiers and can not be fine complete on the market
At the work of " water purification ", but the amusement for being turned on " water purification " carries out publicity marketing, and purifier mainly still passes through filter screen
Dirt interception is carried out, the dirt for the knot that becomes silted up in pipeline after being used for a long time can not be removed well.
Summary of the invention
Present invention solves the technical problem that be, in the prior art, since the state of management work do not have to, it is selected to detect
Evaluation criterion is different, and the detection to water quality is simultaneously not in place, though cause water quality detection qualification rate to be in normal scope, it is actual
Water quality assessment is still relatively low, affects the normal drinking water quality of people, while there is also the healthy hidden dangers of domestic water
Problem, and then provide the secondary water-supply self-cleaning pipeline and automatically cleaning control method of a kind of optimization.
The technical scheme adopted by the invention is that a kind of secondary water-supply self-cleaning pipeline, including pipeline body, it is described
Pipeline includes inner and outer tubes, and cooperation is equipped with automatically cleaning unit and position-limiting unit between said inner tube and outer tube；Any pipeline
Both ends be respectively cooperating with equipped with rotating unit；The position-limiting unit is connect with controller.
Preferably, the automatically cleaning unit includes the cleaning device in the inner tube wall of outer tube and cleaning device is cooperated to be set to
Through-hole on the tube wall of inner tube.
Preferably, the cleaning device is Tapered Cup or blade type part, and the knife edge of the vertex of Tapered Cup or blade type part is towards inner tube
Setting, the setting direction of the knife edge of the blade type part are consistent with the direction of pipeline；The through-hole cooperation is set as pass or strip.
Preferably, cleaning device is cooperated to be equipped with slot on the tube wall of said inner tube, the slot is wire casing or sipes, the slot
Both ends are connect with through-hole respectively.
Preferably, the cleaning device is twist arranged, and the projection of all cleaning devices in the horizontal plane is in one
On straight line, the projection of all cleaning devices on the vertical plane is evenly distributed on the tube wall of outer tube.
Preferably, the position-limiting unit includes several fixed parts in inner tube, is equipped with gas in any fixed part
Cylinder, the interior cooperation of the cylinder are equipped with push rod, and the push rod supports on the inner wall of outer tube；The cylinder is connect with controller.
Preferably, the push rod outer sheath is equipped with spring.
Preferably, any rotating unit includes the ratchet set on inner tube both ends, and the outer tube both ends are respectively equipped with gear
Ring, the baffle ring cooperation ratchet are equipped with pawl, and the rotating side of the ratchet is equipped with clump weight.
Preferably, several poppets are distributed on the outside of the pipeline, the poppet is connect with controller.
A kind of automatically cleaning control method using secondary water-supply self-cleaning pipeline, the method includes following
Step:
Step 1: pipeline enters the Job readiness stage, and cleaning device is in corresponding slot, any cleaning device and corresponding through-hole with
The axisymmetrical of inner tube is arranged；Controller controls push rod and releases；
Step 2: pipeline starts water flowing work；Controller timing starts；Rotating unit is static；
Step 3: when controller timing time reaches predetermined value T1, controller controls the push rod in cylinder and withdraws, poppet cooperation
Lifting；
Step 4: rotating unit is in non-equilibrium state, and inner tube rotates under the action of water impact effect and clump weight,
Cleaning device is gradually run toward through-hole along slot；
Step 5: when cleaning device and through-hole successful matching, then the push rod in controller control cylinder is released and poppet is put down, into
Row in next step, otherwise repeatedly step 4；
Step 6: when controller timing time reaches predetermined value T2, controller controls the push rod in cylinder and withdraws, poppet cooperation
Lifting；
Step 7: cleaning device is detached from through-hole；Rotating unit is in non-equilibrium state, in the effect of water impact effect and clump weight
Lower inner tube rotates, and cleaning device is gradually run along slot to initial position；
Step 8: the push rod in controller control cylinder is released and poppet is put down, and rotating unit is static；Controller timing starts；
Return step 3.
The present invention provides a kind of secondary water-supply of optimization self-cleaning pipeline and automatically cleaning control methods, by that will manage
Road is set as inner and outer tubes, and automatically cleaning unit and position-limiting unit are equipped between inner and outer tubes, when needs carry out certainly
When clean operation, control position-limiting unit triggering rotating unit works, the rotating unit collective effect of pipe ends, so that pipe
Road inner tube is rotated, and is cooperated using water flow and hydraulic pressure with automatically cleaning unit, completes automatically cleaning and the flushing of pipeline, is removed
Dirt and deposition in pipeline.
The present invention actively carries out automatically cleaning control by controller, and state based on management work is different, detects and selects
The different realistic problem of evaluation criterion carries out self-cleaning management to pipeline, and reducing water quality detection bring not in place influences, main
The dynamic quality for promoting domestic water promotes drinking water mouthfeel, greatly reduce due to secondary water-supply detection is unqualified and bring is strong
Health hidden danger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention omits automatically cleaning unit；
Fig. 2 is the partial structural diagram of outer tube of the cleaning device by taking blade type part as an example in the present invention；
Fig. 3 is the partial structural diagram of inner tube corresponding with Fig. 2 middle external tube；
Fig. 4 is the vertical profile structural schematic diagram of Fig. 3；
Fig. 5 is the structural schematic diagram of ratchet and pawl cooperation in the present invention.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, but protection scope of the present invention is not limited to
This.
As shown, the present invention relates to a kind of secondary water-supply self-cleaning pipeline, including pipeline body, the pipeline packet
Inner tube 1 and outer tube 2 are included, cooperation is equipped with automatically cleaning unit and position-limiting unit between said inner tube 1 and outer tube 2；Any pipeline
Both ends are respectively cooperating with equipped with rotating unit；The position-limiting unit is connect with controller.
In the present invention, secondary water-supply is primarily adapted for use in rectilinear duct with self-cleaning pipeline, not applicable for bend pipe.
In the present invention, pipeline includes inner tube 1 and outer tube 2, and automatically cleaning unit and limit are equipped between inner tube 1 and outer tube 2
Bit location, when needing to carry out automatically cleaning operation, controller control position-limiting unit triggering rotating unit works, pipe ends
Rotating unit collective effect, keep 1 stability of rotation of inner tube, when inner tube 1 is rotated, utilize water flow and hydraulic pressure and automatically cleaning list
Member is cooperated, and automatically cleaning and the flushing of pipeline are completed, and removes dirt and deposition in pipeline.
In the present invention, in order to guarantee cleaning effect, the Clean- chemistry of edible grade can also be passed through into pipeline certainly
Reagent assists water flow and hydraulic pressure and automatically cleaning unit, completes automatically cleaning and the flushing of pipeline.
In the present invention, since pipeline is subsection setup, the timing automatically cleaning of section of tubing can be completed, it can't be to whole
The running of body pipeline brings inconvenience.
In the present invention, automatically cleaning control is actively carried out by controller, the state based on management work does not have to, detects and selects
The different realistic problem of evaluation criterion, self-cleaning management is carried out to pipeline, reducing water quality detection bring not in place influences,
It actively promotes the quality of domestic water, promote drinking water mouthfeel, greatly reduce due to the unqualified and bring of secondary water-supply detection
Healthy hidden danger.
The automatically cleaning unit includes the cleaning device 3 in the inner tube wall of outer tube 2 and cleaning device 3 is cooperated to be set to inner tube
Through-hole 4 on 1 tube wall.
The cleaning device 3 is Tapered Cup or blade type part, and the vertex of Tapered Cup or the knife edge of blade type part are arranged towards inner tube 1,
The setting direction of the knife edge of the blade type part is consistent with the direction of pipeline；The cooperation of through-hole 4 is set as pass or strip.
Cleaning device 3 is cooperated to be equipped with slot 5 on the tube wall of said inner tube 1, the slot 5 is wire casing 5 or sipes 5, the slot 5
Both ends are connect with through-hole 4 respectively.
The cleaning device 3 is twist arranged, and the projection of all cleaning devices 3 in the horizontal plane is in a straight line
On, the projection of all cleaning devices 3 on the vertical plane is evenly distributed on the tube wall of outer tube 2.
In the present invention, the inner tube wall of outer tube 2 is equipped with cleaning device 3, and the tube wall of inner tube 1 is equipped with through-hole 4, clean
In the process, cleaning device 3 is docked with through-hole 4, is cooperated hydraulic pressure and water flow, is cleaned to inner tube 1, during non-clean, clearly
Clean part 3 is not docked with through-hole 4, but is contradicted on the outer wall of inner tube 1, at this time can be by cooperation hydraulic pressure and water flow, to inner tube 1
Outer wall and the inner wall of outer tube 2 cleaned, or do not generate silt knot at least.
In the present invention, cleaning device 3 is Tapered Cup or blade type part, and through-hole 4 is with pass or strip is combined into, specifically, cone
It includes blade that shape part, which includes pinnacle, blade type part, using pinnacle and the part of blade by the power-conversion of water flow as cleaning force, it is right
It is cleaned the corresponding position of pipeline.
In the present invention, when cleaning device 3 is blade type part, the setting direction of the knife edge and the direction of pipeline are consistent, reduce water
Also clean effect is not influenced while the resistance of stream.
In the present invention, in order to reduce inner tube 1 during rotation, the excessive friction of the tube wall of cleaning device 3 and inner tube 1, therefore
The case where cooperating the annular setting slot 5 of cleaning device 3 on the tube wall of inner tube 1, for cleaning device 3 being Tapered Cup or blade type part is by slot
5 are set as wire casing 5 or sipes 5, and along slot 5, final cleaning part 3 can fall into through-hole 4 and be adapted to.
In the present invention, cleaning device 3 is whole to be twist arranged, and the projection of all cleaning devices 3 in the horizontal plane is in
The projection of cleaning device 3 on the vertical plane on straight line, all is evenly distributed on the tube wall of outer tube 2, so that water flow is passing through
It is out-of-date be in Scroll-tupe, ensure that it is clean during, dirt can gradually be carried out cutting, and then thoroughly smashed and exported, together
When entire inner tube 1 carried out comprehensive stirring, centrifugal force is smaller, such as there is the knot object that becomes silted up, then gradually toward output after can breaing up
End is assembled and is cut, without being blocked on the even cleaning device 3 of some position.
The position-limiting unit includes several fixed parts 6 in inner tube 1, is equipped with cylinder 7 in any fixed part 6,
Cooperation is equipped with push rod 8 in the cylinder 7, and the push rod 8 supports on the inner wall of outer tube 2；The cylinder 7 is connect with controller.
8 outer sheath of push rod is equipped with spring 9.
In the present invention, position-limiting unit can be set to multiple groups, guarantee the balance of whole inner tube.
In the present invention, position-limiting unit mainly uses the movement of cylinder 7 to realize limit, by the way that cylinder 7 is arranged in fixed part 6,
Cooperating push rod 8 with cylinder 7, fixed part 6 and push rod 8 support respectively to be located between inner tube 1 and outer tube 2, when controller provides instruction, gas
Cylinder 7 moves, and the control of distance is carried out to inner tube 1 and outer tube 2, so that rotating unit starts to work or stops working.
In the present invention, in the outside sheathed spring 9 of push rod 8, on the one hand increases pressure area, guarantee the work of position-limiting unit
Stablize, on the other hand guarantees the safety of position-limiting unit, avoid the shake in shutdown process.
In the present invention, the purpose of setting of position-limiting unit itself is one pretightning force of increase between inner tube 1 and outer tube 2, is guaranteed
Inner tube 1 and outer tube 2 it is opposing stationary, in fact, a spacer pin can also be preset on the inner wall of outer tube 2, spacer pin cooperation
Through-hole 4 is arranged and runs through through-hole 4, and in this case, inner tube 1 and outer tube 2 are also opposing stationary, and when position-limiting unit is released
Spacer pin and through-hole 4 are detached from, and are moved.
Any rotating unit includes the ratchet 10 set on 1 both ends of inner tube, and 2 both ends of outer tube are respectively equipped with baffle ring
11, the baffle ring 11 cooperates ratchet 10 to be equipped with pawl 12, and the rotating side of the ratchet 10 is equipped with clump weight 13.
In the present invention, ratchet 10 is set at 1 both ends of inner tube, cooperation ratchet 10 is provided with pawl 12 at 2 both ends of outer tube
Baffle ring 11, when position-limiting unit, which unclamps, to be limited, ratchet 10 is in non-equilibrium state and can then start turning, and when ratchet 10 moves to
When position, pawl 12 and the cooperation of ratchet 10 carry out locking.
In the present invention, in order to guarantee 10 energy smooth rotation of ratchet during startup, match in the rotating side setting of ratchet 10
Pouring weight 13 guarantees that ratchet 10 is bound to start turning when ratchet 10 and pawl 12 unclamp.
Several poppets 14 are distributed on the outside of the pipeline, the poppet 14 is connect with controller.
In the present invention, several poppets 14 are arranged in distribution on the outside of pipeline, for assisting the movement of integrated piping.
It is described the invention further relates to a kind of automatically cleaning control method using secondary water-supply self-cleaning pipeline
Method includes the following steps.
Step 1: pipeline enters the Job readiness stage, and cleaning device 3 is in corresponding slot 5, any cleaning device 3 with it is corresponding
Through-hole 4 is arranged with the axisymmetrical of inner tube 1；Controller controls push rod 8 and releases.
In the present invention, under the initial stage, cleaning device 3 is located at the back side of through-hole 4, while push rod 8 is released, and position-limiting unit is whole
To being set between inner tube 1 and outer tube 2, rotating unit is also at the state of locking, and relative motion does not occur between inner tube 1 and outer tube 2.
Step 2: pipeline starts water flowing work；Controller timing starts；Rotating unit is static.
In the present invention, with controller timing automatic trigger automatically cleaning operation, guarantee it is self-cleaning in time, in place.
Step 3: when controller timing time reaches predetermined value T1, controller controls the push rod 8 in cylinder 7 and withdraws, and is promoted
The cooperation lifting of valve 14.
In the present invention, after push rod 8 is withdrawn, lost between inner tube 1 and outer tube 2 it is opposite support power, the cooperation of poppet 14 by outer tube 2 into
Row lifting, ratchet 10 and pawl 12 disengage, and ensure that rotating unit everything goes well with your work and start.
Step 4: rotating unit is in non-equilibrium state, and inner tube 1 is sent out under the action of water impact effect and clump weight 13
Raw rotation, cleaning device 3 are gradually run toward through-hole 4 along slot 5.
In the present invention, when rotating unit is under non-equilibrium state, cooperate the counterweight of water flow percussion and clump weight 13,
Inner tube 1 starts turning, and cleaning device 3 is moved along slot 5.
Step 5: when cleaning device 3 and 4 successful matching of through-hole, then controller controls the release of push rod 8 and poppet in cylinder 7
14 put down, and carry out in next step, otherwise repeatedly step 4.
In the present invention, cleaning device 3 and 4 successful matching of through-hole, then inner tube 1 and outer tube 2 are entrenched togather, and pass through water flow and water
Pressure carries out automatically cleaning to inner tube 1, while position-limiting unit is limited, ratchet 10 and pawl 12 engage, and rotation stops.
Step 6: when controller timing time reaches predetermined value T2, controller controls the push rod 8 in cylinder 7 and withdraws, and is promoted
The cooperation lifting of valve 14.
In the present invention, position-limiting unit releases limit, and outer tube 2 is lifted by the cooperation of poppet 14, ratchet 10 and pawl 12
It disengages, ensure that rotating unit everything goes well with your work and start.
Step 7: cleaning device 3 is detached from through-hole 4；Rotating unit is in non-equilibrium state, in water impact effect and clump weight
Inner tube 1 rotates under the action of 13, and cleaning device 3 is gradually run along slot 5 to initial position.
In the present invention, when rotating unit is under non-equilibrium state, cooperate the counterweight of water flow percussion and clump weight 13,
Inner tube 1 starts turning, and cleaning device 3 moves to initial position along slot 5.
Step 8: the push rod 8 in controller control cylinder 7 is released and poppet 14 is put down, and rotating unit is static；Controller
Timing starts；Return step 3.
In the present invention, position-limiting unit is limited, ratchet 10 and pawl 12 engage, and rotation stops, time in.
The present invention is equipped with automatically cleaning list by setting inner tube 1 and outer tube 2 for pipeline between inner tube 1 and outer tube 2
Member and position-limiting unit, when needing to carry out automatically cleaning operation, control position-limiting unit triggering rotating unit works, pipe ends
Rotating unit collective effect cooperated using water flow and hydraulic pressure with automatically cleaning unit so that pipeline inner tube 1 is rotated,
Dirt and deposition in pipeline are removed in automatically cleaning and the flushing for completing pipeline.The present invention actively carries out automatically cleaning by controller
Control, the realistic problem that state based on management work is different, the evaluation criterion that detects and selects is different, carries out automatically cleaning to pipeline
Formula management, reducing water quality detection bring not in place influences, and actively promotes the quality of domestic water, promotes drinking water mouthfeel, greatly
It is big reduce due to secondary water-supply detection is unqualified and bring healthy hidden danger.
Claims (10)
1. a kind of secondary water-supply self-cleaning pipeline, including pipeline body, it is characterised in that: the pipeline includes inner tube and outer
Pipe, cooperation is equipped with automatically cleaning unit and position-limiting unit between said inner tube and outer tube；The both ends of any pipeline, which are respectively cooperating with, to be set
There is rotating unit；The position-limiting unit is connect with controller.
2. a kind of secondary water-supply self-cleaning pipeline according to claim 1, it is characterised in that: the automatically cleaning unit
Cleaning device and cooperation cleaning device in inner tube wall including being set to outer tube are set to the through-hole on the tube wall of inner tube.
3. a kind of secondary water-supply self-cleaning pipeline according to claim 2, it is characterised in that: the cleaning device is cone
Shape part or blade type part, the vertex of Tapered Cup or the knife edge of blade type part are arranged towards inner tube, the setting side of the knife edge of the blade type part
To consistent with the direction of pipeline；The through-hole cooperation is set as pass or strip.
4. a kind of secondary water-supply self-cleaning pipeline according to claim 3, it is characterised in that: the tube wall of said inner tube
Upper cooperation cleaning device is equipped with slot, and the slot is wire casing or sipes, and the both ends of the slot are connect with through-hole respectively.
5. a kind of secondary water-supply self-cleaning pipeline according to claim 2, it is characterised in that: the cleaning device is in spiral shell
Shape setting is revolved, the projection of all cleaning devices in the horizontal plane is in a straight line, and all cleaning devices are hanging down
The projection faced directly is evenly distributed on the tube wall of outer tube.
6. a kind of secondary water-supply self-cleaning pipeline according to claim 1, it is characterised in that: the position-limiting unit packet
Several fixed parts in inner tube are included, cylinder are equipped in any fixed part, cooperation is equipped with push rod in the cylinder, described
Push rod supports on the inner wall of outer tube；The cylinder is connect with controller.
7. a kind of secondary water-supply self-cleaning pipeline according to claim 6, it is characterised in that: the push rod outer sheath
Equipped with spring.
8. a kind of secondary water-supply self-cleaning pipeline according to claim 1, it is characterised in that: any rotation is single
Member includes the ratchet set on inner tube both ends, and the outer tube both ends are respectively equipped with baffle ring, and the baffle ring cooperation ratchet is equipped with pawl, institute
The rotating side for stating ratchet is equipped with clump weight.
9. a kind of secondary water-supply self-cleaning pipeline according to claim 1, it is characterised in that: divide on the outside of the pipeline
Several poppets are laid with, the poppet is connect with controller.
10. a kind of automatically cleaning control method using secondary water-supply self-cleaning pipeline described in one of claim 1 ~ 9,
It is characterized in that: the described method comprises the following steps:
Step 1: pipeline enters the Job readiness stage, and cleaning device is in corresponding slot, any cleaning device and corresponding through-hole with
The axisymmetrical of inner tube is arranged；Controller controls push rod and releases；
Step 2: pipeline starts water flowing work；Controller timing starts；Rotating unit is static；
Step 3: when controller timing time reaches predetermined value T1, controller controls the push rod in cylinder and withdraws, poppet cooperation
Lifting；
Step 4: rotating unit is in non-equilibrium state, and inner tube rotates under the action of water impact effect and clump weight,
Cleaning device is gradually run toward through-hole along slot；
Step 5: when cleaning device and through-hole successful matching, then the push rod in controller control cylinder is released and poppet is put down, into
Row in next step, otherwise repeatedly step 4；
Step 6: when controller timing time reaches predetermined value T2, controller controls the push rod in cylinder and withdraws, poppet cooperation
Lifting；
Step 7: cleaning device is detached from through-hole；Rotating unit is in non-equilibrium state, in the effect of water impact effect and clump weight
Lower inner tube rotates, and cleaning device is gradually run along slot to initial position；
Step 8: the push rod in controller control cylinder is released and poppet is put down, and rotating unit is static；Controller timing starts；
Return step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415639.9A CN110080339B (en) | 2019-05-18 | 2019-05-18 | Self-cleaning type pipeline for secondary water supply and self-cleaning control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415639.9A CN110080339B (en) | 2019-05-18 | 2019-05-18 | Self-cleaning type pipeline for secondary water supply and self-cleaning control method |
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| CN110080339A true CN110080339A (en) | 2019-08-02 |
| CN110080339B CN110080339B (en) | 2023-09-08 |
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ID=67420802
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910415639.9A Active CN110080339B (en) | 2019-05-18 | 2019-05-18 | Self-cleaning type pipeline for secondary water supply and self-cleaning control method |
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| Publication number | Publication date |
|---|---|
| CN110080339B (en) | 2023-09-08 |
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