CN109084106A - A kind of industrial production pipeline - Google Patents
A kind of industrial production pipeline Download PDFInfo
- Publication number
- CN109084106A CN109084106A CN201811263393.XA CN201811263393A CN109084106A CN 109084106 A CN109084106 A CN 109084106A CN 201811263393 A CN201811263393 A CN 201811263393A CN 109084106 A CN109084106 A CN 109084106A
- Authority
- CN
- China
- Prior art keywords
- gear
- connecting rod
- fixedly connected
- industrial production
- pipe
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L29/00—Joints with fluid cut-off means
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L45/00—Pipe units with cleaning aperture and closure therefor
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
Abstract
The present invention relates to hydraulic engineering equipment technical fields; and disclose a kind of industrial production pipeline; it is managed including control; gear guard box is fixedly installed in the middle part of the control tube top end; the side of the gear guard box is movably installed with gear connecting rod I; one end of the gear connecting rod I is run through and extends to the inside of gear guard box and be fixedly connected with gear I, and the other end of the gear connecting rod I is fixedly connected with rotation handle, and the inside of the gear guard box is equipped with gear II.The industrial production pipeline, by connecting the baffle I of inside pipe wall, so that the sundries in waste water is blocked, be conducive to precipitate the collection of sundries, again by receiving dirty case and blowdown tank, so that sundries precipitating collects enhanced convenience, it is excessive and cause the blocking of water pipe to avoid impurity, improves the practicability of device, pull downward on limited block, fixture block is extracted out downwards, so that the outside extraction that drawer is more convenient, improves the efficiency of blowdown.
Description
Technical field
The present invention relates to hydraulic engineering equipment technical field, specially a kind of industrial production pipeline.
Background technique
Pipeline is connected into pipe, pipe connector and valve etc. for conveying gas, liquid or with solid particle
Fluid device, in general, fluid through air blower, compressor, pump and boiler etc. pressurization after, flow to low pressure from the high pressure of pipeline
The pressure or gravity conveying of fluid itself can also be used in place.Having many uses for pipeline is general, be used primarily in water supply, draining, heat supply,
It gives gas, in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
When mesh industrial production, when the waste water generated enters pipeline, it is be easy to cause the blocking of pipeline, and have in waste water
Many dirts cannot be collected processing to dirt, and water pipe is easy to appear dislocation, and the effect of filtering foreign is poor, is unable to control water
The problems such as flow, thus it is proposed that a kind of industrial production pipeline.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of industrial production pipeline, it is good to have a filter effect, control
The advantages that flow velocity, be easy to cause the blocking of pipeline when solving waste water and entering pipeline, and many dirts are had in waste water, no
Processing can be collected to dirt, water pipe is easy to appear dislocation, and the effect of filtering foreign is poor, the problem of being unable to control water flow.
(2) technical solution
To realize that above-mentioned filter effect is good, the purpose of coutroi velocity, the invention provides the following technical scheme: a kind of industry is raw
It produces and uses pipeline, including control pipe, be fixedly installed with gear guard box in the middle part of the control tube top end, the gear guard box
Side is movably installed with gear connecting rod I, one end of the gear connecting rod I run through and extend to gear guard box inside and
It is fixedly connected with gear I, the other end of the gear connecting rod I is fixedly connected with rotation handle, the inside of the gear guard box
Equipped with gear II, the gear I is intermeshed with gear II, is fixedly connected with gear connecting rod in the middle part of II bottom end of gear
II, the inside of control pipe is run through and extended in one end of the gear connecting rod II, and the inside of the control pipe is equipped with round gear
Water plate, the gear connecting rod II, which is located at the top of one end inside control pipe and round water fender, to be fixedly connected, the control
The fixed suit internal cutting ferrule of the lateral surface at pipe both ends, one end of the control pipe is fixed to be communicated with water inlet pipe, the control pipe
The fixed connection connecting tube of the other end, the lateral surface of described water inlet pipe one end and the equal fixing sleeve of lateral surface of connecting tube one end are equipped with outer
Cutting ferrule, the side of the internal cutting ferrule are fixedly connected with the side of external cutting ferrule, and the other end of the connecting tube is fixed to be communicated with receipts dirt
Case, the inner wall of the connecting tube and is located to receive and is fixedly installed with baffle I above dirty case, and the bottom for receiving dirty case is fixedly mounted
There is limit plate, the bottom of the limit plate is fixedly installed with blowdown tank, and the inside of the limit plate is equipped with baffle II, the baffle
The outside of limit plate is run through and extended in II one end, and one end that the baffle II is located at outside limit plate is fixedly connected with pumping
Block, the internal activity of the blowdown tank are set with drawer, and the side of the drawer is fixedly connected with drawer handle, the blowdown tank
The side of bottom is fixedly installed with clamping apparatus, and the top of the clamping apparatus is flexibly connected with the side of drawer, and the receipts are dirty
The top fixation of case is communicated with outlet pipe, and the inside of the outlet pipe is fixedly installed with filter screen.
Preferably, the clamping apparatus includes chamber box, and the chamber box is fixedly mounted on the bottom of blowdown tank, the chamber
The bottom of body case is movably installed with connecting rod, and one end of the connecting rod is run through and extended to the inside of chamber box and is fixedly connected
Have fixture block, one end of the fixture block is run through and extends to the outside of chamber box and be flexibly connected with drawer, the connecting rod it is another
One end is fixedly connected with limited block, and the inner wall of the chamber box is connected by the bottom driving of adjustable spring and fixture block, described to stretch
Contracting spring movable set is in connecting rod.
Preferably, the side of the outlet pipe is fixedly installed with electric motor protecting case, and the inside of the electric motor protecting case is fixed
Motor is installed, the output shaft of the motor runs through and extends to the inside of outlet pipe and be fixedly connected with propeller, the spiral shell
Rotation paddle is located at the lower section of filter screen.
Preferably, the side of the internal cutting ferrule is movably installed with the bolt being located above control pipe, and the quantity of bolt is
It two, is symmetrically distributed in internal cutting ferrule, one end of the bolt is run through and extends to the outside of external cutting ferrule and screw thread is socketed with spiral shell
It is female.
Preferably, the quantity of the baffle I is three, and baffle I and the horizontal sextant angle of connecting tube are 60 degree.
Preferably, the bore for receiving dirty case upper end is greater than the bore for receiving dirty case lower end, and the bore for receiving dirty case upper end is
Three times for receiving dirty case lower end bore.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of industrial production pipeline, have it is following the utility model has the advantages that
1, the industrial production pipeline rotates handle by twisting, and band moving gear I and gear II are intermeshed, and are driven round
Water fender is controlling rotation in pipe, is conducive to the flow velocity for controlling waste water, improves the practicability of device, then is bolted interior
Cutting ferrule and external cutting ferrule improve the convenience of device so that water pipe is easy to disassemble, effectively avoid the dislocation of water pipe.
2, industrial production pipeline, by connecting the baffle I of inside pipe wall, so that the sundries in waste water is blocked, favorably
It is precipitated in by the collection of sundries, then by receiving dirty case and blowdown tank, so that sundries precipitating collects enhanced convenience, avoids impurity
Blocking that is excessive and causing water pipe, improves the practicability of device, pulls downward on limited block, fixture block is extracted out downwards, so that drawer
More convenient outside extraction, improves the efficiency of blowdown.
Detailed description of the invention
Fig. 1 is front schematic view of the present invention;
Fig. 2 is partial enlargement diagram at the A of Fig. 1 of the present invention;
Fig. 3 is clamping apparatus schematic diagram of the present invention.
In figure: 1 control pipe, 2 gear guard boxs, 3 gear connecting rods I, 4 gears I, 5 rotation handle, 6 gears II, 7 gears connect
Dirty case, the limit of 14 baffles I, 15 are received in the round water fender of extension bar II, 8,9 internal cutting ferrules, 10 water inlet pipes, 11 connecting tubes, 12 external cutting ferrules, 13
Plate, 16 blowdown tanks, 17 baffles II, 18 take out block, 19 drawers, 20 drawer handles, 21 clamping apparatus, 211 chamber box, 212 connecting rods,
213 fixture blocks, 214 limited blocks, 215 adjustable springs, 22 outlet pipes, 23 filter screens, 24 electric motor protecting casees, 25 motors, 26 propellers,
27 bolts, 28 nuts.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3, a kind of industrial production pipeline, including control pipe 1 are please referred to, the middle part on control 1 top of pipe is fixedly mounted
There is gear guard box 2, the side of gear guard box 2 is movably installed with gear connecting rod I 3, and one end of gear connecting rod I 3 is run through
And extend to the inside of gear guard box 2 and be fixedly connected with gear I 4, the other end of gear connecting rod I 3 is fixedly connected with rotation
Handle 5, the inside of gear guard box 2 are equipped with gear II 6, and gear I 4 and gear II 6 are intermeshed, the middle part of II 6 bottom end of gear
It is fixedly connected with gear connecting rod II 7, one end of gear connecting rod II 7 is run through and extended to the inside of control pipe 1, controls pipe 1
Inside be equipped with round water fender 8, by twisting rotation 5, band moving gear I 4 and gear II 6 are intermeshed, and drive round keep off
Water plate 8 rotates in control pipe 1, is conducive to the flow velocity for controlling water, the waste of water resource, improves device when avoiding irrigation
Practicability, gear connecting rod II 7 are located at one end inside control pipe 1 and are fixedly connected with the top of round water fender 8, control pipe 1
The fixed suit internal cutting ferrule 9 of the lateral surface at both ends, the side of internal cutting ferrule 9 are movably installed with the bolt 27 for being located at 1 top of control pipe,
And the quantity of bolt 27 is two and is symmetrically distributed in internal cutting ferrule 9, one end of bolt 27 is run through and extends to the outer of external cutting ferrule 12
Portion and screw thread are socketed with nut 28, and bolt 27 connects internal cutting ferrule 9 and external cutting ferrule 12 and improves device so that water pipe is easy to disassemble
Convenience, effectively avoid the dislocation of water pipe, one end of control pipe 1 is fixed to be communicated with water inlet pipe 10, control pipe 1 it is another
The fixed connection connecting tube 11 in end, the lateral surface of 10 one end of water inlet pipe and the equal fixing sleeve of lateral surface of 11 one end of connecting tube are equipped with wild card
Set 12, the side of internal cutting ferrule 9 is fixedly connected with the side of external cutting ferrule 12, and the other end of connecting tube 11 is fixed to be communicated with the dirty case of receipts
13, the bore of 13 upper end of dirty case is received greater than the bore for receiving 13 lower end of dirty case, and the bore for receiving 13 upper end of dirty case is under the dirty case 13 of receipts
Three times of port diameter are conducive to baffle II 17 and stop sandstone sludge, improve the practicability of device, the inner wall of connecting tube 11 and position
It is fixedly installed with baffle I 14 in the top for receiving dirty case 13, the quantity of baffle I 14 is three, and the water of baffle I 14 and connecting tube 11
Flat angle is 60 degree, and the baffle I 14 by being mounted on 11 inner wall of connecting tube is conducive to sandstone so that sandstone sludge is blocked
The collection of sundries precipitates, and the bottom for receiving dirty case 13 is fixedly installed with limit plate 15, and the bottom of limit plate 15 is fixedly installed with blowdown
Case 16 is avoided so that sandstone sludge settling collects enhanced convenience because of sandstone sludge mistake by receiving dirty case 13 and blowdown tank 16
Blocking that is more and causing water pipe, improves the practicability of device, and the inside of limit plate 15 is equipped with baffle II 17, and the one of baffle II 17
The outside of limit plate 15 is run through and is extended at end, and one end that baffle II 17 is located at outside limit plate 15, which is fixedly connected with, takes out block 18,
The internal activity of blowdown tank 16 is set with drawer 19, and the side of drawer 19 is fixedly connected with drawer handle 20,16 bottom of blowdown tank
Side be fixedly installed with clamping apparatus 21, clamping apparatus 21 includes chamber box 211, and chamber box 211 is fixedly mounted on blowdown tank
16 bottom, the bottom of chamber box 211 are movably installed with connecting rod 212, and one end of connecting rod 212 is run through and extends to chamber box
211 inside and it is fixedly connected with fixture block 213, one end of fixture block 213 is run through and extends to outside and and the drawer of chamber box 211
The clamping of 19 phases, the other end of connecting rod 212 are fixedly connected with limited block 214, and the inner wall of chamber box 211 passes through adjustable spring 215
It is connect with the bottom driving of fixture block 213,215 movable set of adjustable spring is twitched limited block 214 and taken out outward in connecting rod 212
Out, connecting rod 212 and fixture block 213 is driven to extract out outward, so that the outside extraction that drawer 19 is more convenient, improves the effect of blowdown
Rate, the top of clamping apparatus 21 are mutually clamped with the side of drawer 19, and the top fixation for receiving dirty case 13 is communicated with outlet pipe 22, are discharged
The side of pipe 22 is fixedly installed with electric motor protecting case 24, and the inside of electric motor protecting case 24 is fixedly installed with motor 25, motor 25
Output shaft runs through and extends to the inside of outlet pipe 22 and be fixedly connected with propeller 26, and propeller 26 is located under filter screen 23
Side drives propeller 26 to rotate by motor 25, effectively avoids and causes the blocking of filter screen 23 because sludge is excessive, so that
Sludge can be precipitated preferably, improve the practicability of device, and the inside of outlet pipe 22 is fixedly installed with filter screen 23.
When work, firstly, starting motor 25, allows water to enter control pipe 1 by water inlet pipe 10, is entering connecting tube 11, passing through
Dirt case 13 is received, then is discharged by outlet pipe 22, when sandstone sludge is excessive in the dirty case 13 of receipts, twisting rotation is 5, with I 4 He of moving gear
Gear II 6 is intermeshed, and is driven circle water fender 8 to rotate in control pipe 1, is blocked water source, twitches take out the drive gear of block 18 outward
Plate II 17 is extracted out outward, and sandstone sludge enters blowdown tank 16, when sandstone sludge piles with drawer 19, pulls out limited block 214,
Extract drawer 19 out.
In conclusion the industrial production pipeline, by twisting rotation 5, band moving gear I 4 and gear II 6 are mutually nibbled
It closes, round water fender 8 is driven to rotate in control pipe 1, be conducive to the flow velocity for controlling water, the wave of water resource when avoiding irrigation
Take, improves the practicability of device, then internal cutting ferrule 9 and external cutting ferrule 12 are connected by bolt 27, so that water pipe is easy to disassemble, improve
The convenience of device, effectively avoids the dislocation of water pipe;By being mounted on the baffle I 14 of 11 inner wall of connecting tube, so that husky
Stone sludge is blocked, and is conducive to the collection precipitating of sandstone sundries, then by receiving dirty case 13 and blowdown tank 16, so that sandstone sludge is heavy
It forms sediment and collects enhanced convenience, avoid and cause the blocking of water pipe because sandstone sludge is excessive, improve the practicability of device, downwards
Limited block 214 is pulled, fixture block 213 is extracted out downwards, so that the outside extraction that drawer 19 is more convenient, improves the efficiency of blowdown;
It solves water pipeline and is easy blocking, have a large amount of dirts in water, processing cannot be collected to dirt, water pipe is easy to appear mistake
The problem of position, the effect of sandstone filtering foreign is poor, is unable to control water flow.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of industrial production pipeline, including control pipe (1), it is characterised in that: the middle part on the control pipe (1) top is fixed
It is equipped with gear guard box (2), the side of the gear guard box (2) is movably installed with gear connecting rod I (3), the gear
One end of connecting rod I (3) extends to the inside of gear guard box (2) and is fixedly connected with gear I (4), the gear connecting rod I
(3) the other end is fixedly connected with rotation (5), and the inside of the gear guard box (2) is equipped with gear II (6), the gear I
(4) it is intermeshed with gear II (6), is fixedly connected with gear connecting rod II (7) in the middle part of gear II (6) bottom end, it is described
The inside of control pipe (1) is run through and extended in one end of gear connecting rod II (7), and the inside of the control pipe (1) is equipped with circle
Water fender (8), the gear connecting rod II (7) are located at the internal one end of control pipe (1) and the top of round water fender (8) and fix
Connection, fixed suit internal cutting ferrule (9) of the lateral surface at the control pipe (1) both ends, the fixed connection in one end of the control pipe (1)
Have water inlet pipe (10), fixed connection connecting tube (11) of the other end of the control pipe (1), the outside of described water inlet pipe (10) one end
The equal fixing sleeve of lateral surface of face and connecting tube (11) one end is equipped with external cutting ferrule (12), the side of the internal cutting ferrule (9) and external cutting ferrule
(12) side is fixedly connected, and the other end of the connecting tube (11) is fixed to be communicated with the dirty case (13) of receipts, the connecting tube (11)
Inner wall and be located to receive and be fixedly installed with baffle I (14) above dirty case (13), the bottom for receiving dirty case (13) is fixedly mounted
Have limit plate (15), the bottom of the limit plate (15) is fixedly installed with blowdown tank (16), and the inside of the limit plate (15) is set
There is baffle II (17), the baffle II (17) is located at the external one end of limit plate (15) and is fixedly connected with pumping block (18), the row
The internal activity of dirty case (16) is set with drawer (19), and the side of the drawer (19) is fixedly connected with drawer handle (20), institute
The side for stating blowdown tank (16) bottom is fixedly installed with clamping apparatus (21), the top and drawer (19) of the clamping apparatus (21)
Side be flexibly connected, the top fixation for receiving dirty case (13) is communicated with outlet pipe (22), the inside of the outlet pipe (22)
It is fixedly installed with filter screen (23).
2. a kind of industrial production pipeline according to claim 1, it is characterised in that: the clamping apparatus (21) includes chamber
Body case (211), the chamber box (211) are fixedly mounted on the bottom of blowdown tank (16), the bottom activity of the chamber box (211)
It is set with connecting rod (212), one end of the connecting rod (212) is run through and extends to inside and the company of fixation of chamber box (211)
It is connected to fixture block (213), one end of the fixture block (213) is run through and extends to the outside of chamber box (211) and live with drawer (19)
Dynamic connection, the other end of the connecting rod (212) are fixedly connected with limited block (214), and the inner wall of the chamber box (211) passes through
Adjustable spring (215) is connect with the bottom driving of fixture block (213), and adjustable spring (215) movable set is in connecting rod (212)
On.
3. a kind of industrial production pipeline according to claim 1, it is characterised in that: the side of the outlet pipe (22) is solid
Dingan County is equipped with electric motor protecting case (24), and the inside of the electric motor protecting case (24) is fixedly installed with motor (25), the motor
(25) output shaft extends to the inside of outlet pipe (22) and is fixedly connected with the side of propeller (26), the propeller (26)
Positioned at the lower section of filter screen (23).
4. a kind of industrial production pipeline according to claim 1, it is characterised in that: the side of the internal cutting ferrule (9) is living
It is dynamic to be set with the bolt (27) being located above control pipe (1), and the quantity of bolt (27) is two, is symmetrically distributed in internal cutting ferrule
(9) on, one end of the bolt (27) is run through and extends to the outside of external cutting ferrule (12) and screw thread is socketed with nut (28).
5. a kind of industrial production pipeline according to claim 1, it is characterised in that: the quantity of the baffle I (14) is
Three, and baffle I (14) and the horizontal sextant angle of connecting tube (11) they are 60 degree.
6. a kind of industrial production pipeline according to claim 1, it is characterised in that: the mouth for receiving dirty case (13) upper end
Diameter is greater than the bore for receiving dirty case (13) lower end, and the bore for receiving dirty case (13) upper end is three times for receiving dirty case (13) lower end bore.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811263393.XA CN109084106A (en) | 2018-10-28 | 2018-10-28 | A kind of industrial production pipeline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811263393.XA CN109084106A (en) | 2018-10-28 | 2018-10-28 | A kind of industrial production pipeline |
Publications (1)
Publication Number | Publication Date |
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CN109084106A true CN109084106A (en) | 2018-12-25 |
Family
ID=64844425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201811263393.XA Pending CN109084106A (en) | 2018-10-28 | 2018-10-28 | A kind of industrial production pipeline |
Country Status (1)
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CN (1) | CN109084106A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112282016A (en) * | 2020-09-03 | 2021-01-29 | 宁波汇洲生态建设有限公司 | Municipal administration sewage drainage structures, drainage pipe network and drainage system |
CN112413257A (en) * | 2020-11-03 | 2021-02-26 | 山东中锐供水设备有限公司 | Flow stopping device for water supply equipment |
-
2018
- 2018-10-28 CN CN201811263393.XA patent/CN109084106A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112282016A (en) * | 2020-09-03 | 2021-01-29 | 宁波汇洲生态建设有限公司 | Municipal administration sewage drainage structures, drainage pipe network and drainage system |
CN112282016B (en) * | 2020-09-03 | 2022-04-12 | 宁波汇洲生态建设有限公司 | Municipal administration sewage drainage structures, drainage pipe network and drainage system |
CN112413257A (en) * | 2020-11-03 | 2021-02-26 | 山东中锐供水设备有限公司 | Flow stopping device for water supply equipment |
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Application publication date: 20181225 |