CN108188368A - A kind of environment-friendly type sanitary sewer and preparation method thereof and installation method - Google Patents
A kind of environment-friendly type sanitary sewer and preparation method thereof and installation method Download PDFInfo
- Publication number
- CN108188368A CN108188368A CN201711352249.9A CN201711352249A CN108188368A CN 108188368 A CN108188368 A CN 108188368A CN 201711352249 A CN201711352249 A CN 201711352249A CN 108188368 A CN108188368 A CN 108188368A
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- Prior art keywords
- pipe
- paraffin
- environment
- friendly type
- cast iron
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D13/00—After-treatment of the enamelled articles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/005—Coating with enamels or vitreous layers by a method specially adapted for coating special objects
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention discloses a kind of environment-friendly type sanitary sewers, and including cast iron pipe, the inner wall of cast iron pipe is coated with paraffin layer.Preparation method is：A, pipe die is mounted on metal mold centrifuge, high temperature liquid iron is continuously injected into pipe die, forms pipe；B, pipe solidification cooling after take out pipe, pipe is closed at both ends, the paraffin of enough thawings is poured into from one of end, then by pipe with the direction of axis horizontal it is horizontal and rotate at least one week；C, by pipe turn to axis vertical to, open lower section port, flow to end extra paraffin；D, treat that paraffin is cooled to room temperature.The invention also discloses its installation methods.The beneficial effects of the invention are as follows：Under the premise of ensuring that cast iron pipe is corrosion resistant, moreover it is possible to meet the environmental requirement of old pipeline after manufacture, processing, application and dismounting update, accomplish whole innoxious.
Description
Technical field
The invention belongs to pipeline field, specifically a kind of environment-friendly type sanitary sewer and preparation method thereof and installation method,
Present invention is particularly suitable for the down-stream pipes in the dry webmaster road of municipal sewage.
Background technology
Sanitary sewer had both included the branch pipe of building interior, also included the manifold for leading to sewage treatment plant, conventional material
Typically cast iron pipe either pvc pipe.Pvc pipe is crisp, not ageing-resistant, and cast iron pipe is clumsy, not corrosion-resistant.Chinese patent literature
CN106759784A disclosed on May 31st, 2017 " a kind of sewage conduct interior finishing composite material anti-corrosion structure and its
Processing method ", painting anticorrosion material layer on the sewage conduct inner wall, the preserving timber bed of material include epoxies, resinae, third
The anti-corrosion material that olefin(e) acid, alkyd resin, fluorocarbon resin material form.It is applicant's understanding that the invention solves urban sewage and life
The problem of waste water living is to the corrosion of traditional concrete pipe, has corrosion resistance requirement, while technology requirement is ensured, substantially
Cost is reduced, the advantageous effects with very high economic value, while the present invention also provides a kind of paintings of sewage conduct inner wall
The processing method for filling composite material anti-corrosion structure.The anti-corrosion material of application in the program, containing there are many environmentally harmful objects
Matter during manufacture, processing, application, all has harm to construction personnel, to surrounding enviroment；After pipeline update, old pipeline
Harmlessness disposing it is also highly difficult, therefore lack promote value.
Invention content
The technical problem to be solved in the invention is that the coating material of existing sanitary sewer is poisonous and harmful, so as to carry
For a kind of environment-friendly type sanitary sewer, under the premise of ensuring that cast iron pipe is corrosion resistant, moreover it is possible to meet manufacture, processing, application and tear open
The environmental requirement of old pipeline after updating is unloaded, is accomplished whole innoxious；And the preparation side of the environment-friendly type sanitary sewer is proposed simultaneously
Method and installation method.
In order to realize goal of the invention one, the present invention adopts the following technical scheme that：A kind of environment-friendly type sanitary sewer, including casting
Iron pipe, the inner wall of cast iron pipe are coated with paraffin layer.
The sewage pipe of this programme design, using cast iron pipe as core, the paraffin in the inner wall covering of cast iron pipe prevents sewage from straight
It connects and is contacted with cast iron, can just eliminate corrosion of the sanitary sewage to cast iron pipe of subacidity well.Due to the temperature of sanitary sewage
Far below the melt temperature of paraffin, therefore without worrying that paraffin can melt disappearance.Meanwhile after paraffin covering, become ten in tube wall
It is divided clean, aneroid waste there will be no to remain on tube wall, the flow efficiency of sewage is also high more in pipeline.Especially exist
It when having small sand holes on cast iron pipe, can be blocked with paraffin, significantly reduce the finished product requirement of cast iron pipe, improve finished product
Rate has saved the manufacture cost of cast iron pipe.Paraffin itself is nontoxic odorless, will not react with conventional sewage cost, will not be dirty
The soil on the embedded ground of dye, will not increase polluter in sewage.Sewage pipe manufacture, installation process comply fully with environmental protection and want
It asks；It needs to update after sewage pipe is old, the sewage pipe removed can recycle re-melting ironmaking completely, and paraffin can melt disappearance, nothing
Any residual.
Preferably, cast iron pipe outer wall is electrically connected spelter；Spelter is buried in the soil jointly with cast iron pipe.Due to most of
City domestic sewage trunk line is all to be embedded in underground, it is therefore desirable to consider corrosiveness of the soil to cast iron pipe.For this
Scheme is electrically connected with a spelter on cast iron pipe, is better than the principle of iron using the betatopic ability of zinc, and casting is replaced in soil
Iron corrodes in advance, so as to extend the service life of cast iron pipe.This scheme increases spelter on the outside, makes cast iron pipe in inside and outside two side
Resistance to corrosion, which is obtained for, to be effectively improved.
In order to realize goal of the invention two, the present invention adopts the following technical scheme that：
A kind of preparation method of environment-friendly type sanitary sewer, includes the following steps：
A, pipe die is mounted on metal mold centrifuge, high temperature liquid iron is continuously injected into pipe die, forms pipe；
B, pipe is taken out after pipe solidification cooling, pipe is closed at both ends, pour into enough melt from one of end
The paraffin of change, then by pipe with the direction of axis horizontal it is horizontal and rotate at least one week；
C, by pipe turn to axis vertical to, open lower section port, flow to end extra paraffin；
D, treat that paraffin is cooled to room temperature.
The preparation method of this programme design first has to manufacture pipe by centrifuge, then uniform in the inner wall of pipe
The paraffin melted is smeared, entire tube blank inner wall and the external world is completely isolated, after extra paraffin is outwelled, treat that paraffin cooling is solidifying
Gu after tube blank inner wall.Contamination-free generates in overall process, simple to operate.
Preferably, in step B pipe be cooled to temperature for 80 ± 5 DEG C when carry out filling wax.Cast iron pipe temperature after demoulding
Very high, residual temperature can make full use of.Filling wax can be carried out when it is cooled to 80 ± 5 DEG C, the entire wax process time that fills is not grown, foot
To ensure that liquid paraffin can flow through the inner wall of cast iron pipe, redundance outflow completely.If cast iron pipe temperature is relatively low, need by
It is warming up to suitable temperature, and paraffin is avoided quickly to solidify, and loses flowability.
Preferably, to being first decompressed to 0.5 bar in the pipe of sealing hereinafter, pouring into the paraffin of thawing, then add in step B
Pressure, pressure are 2-2.5 bars, are then rotated.It first depressurizes, the air in cast iron internal defect hole is sucked out, then pour into thawing
Paraffin, repressurization make paraffin is as much as possible to be filled into cast iron internal defect hole.
Preferably, in step C, vertical pipe is while extra paraffin is poured out around own axes rotation.Bian Xuan
Turn side and pour out extra paraffin, be the paraffin layer that condensation is destroyed in order to avoid the significant paraffin flow cracks of streamline on tube wall
Uniformity.
Preferably, the rotating speed of vertical pipe is 600 ± 50r/min.When getting rid of extra paraffin, the rotating speed of cast iron pipe
Should not be excessively slow, too slow then paraffin cooling can influence mobility and even condense, and can normally will then be covered on cast iron pipe inner wall soon very much
Paraffin get rid of, cause paraffin covering surface too thin or even expose internal cast iron pipe, paraffin covering is caused to fail.
In order to realize goal of the invention three, the present invention adopts the following technical scheme that：
A kind of installation method of foregoing environment-friendly type sanitary sewer, includes the following steps：
A, bright ditch, the width of ditch and the diameter of depth adaptation sewage pipe are excavated on ground；
B, bottom of trench is placed in by sewage pipe is end to end；
C, the position of first sewage pipe is fixed, then paves second sewage pipe to proper height, by its stem
Be connected to the tail portion of first sewage pipe；
D, connection is covered with the paraffin melted in the head and the tail junction of two sewage inside pipe walls；
E, paraffin is treated；
F, step C to step E is repeated in, until remaining sewage pipe, is respectively mounted completion；
G, bright ditch is backfilled, sewage pipe is made to be located at below surface soil.
In the present solution, focus on the processing of the head and the tail junction to two sewage inside pipe walls.It needs using paraffin to connection
Place carries out covering connection, and the head and the tail seam crossing of each cast iron pipe is made all thoroughly to be separated by paraffin with sewage, thoroughly eliminates sewage pair
The corrosion of cast iron pipe.Meanwhile this processing scheme will not equally bring new pollution, and it is environmentally friendly, to construction personnel's safety.
Preferably, in step D, the paraffin that can melt in inside is directly brushed, can also be in outside to two sewage
The head and the tail junction of inside pipe wall carries out local warming, and internal corresponding position paraffin is made first to melt reconnection in cooled and solidified.If
Caliber is very big, it is sufficient to construction personnel be made to enter in pipeline, first place can be welded, then with the paraffin brush of thawing all over weld seam
And surrounding, it is ensured that by weld seam and air insulated；If caliber is smaller, the paraffin on inner wall can also be made micro- in pipeline external heat
It is fused to each other again after micro- thawing, is combined into the parafilm of an entirety, is sealed at abutment joint.
It, can be by the paraffin of thawing from both sides fixed bonding preferably, when tiny localized seepage occurs in cast iron pipe
It is closed outside breakthrough, without whole replacement.
Preferably, each cast iron pipe outer wall is electrically connected one piece of spelter；Spelter is being embedded in corresponding sewage pipe just
Lower section.Spelter is placed in the lower section of sewage pipe, closer to moist environment, underground water can be contacted earlier than cast iron pipe fitting joint, is generated in advance
Betatopic effect generates protective effect to cast iron pipe in advance.Spelter is embedded in the underface of corresponding sewage pipe, can replace
Facilitate location lookup during spelter.
In conclusion the beneficial effects of the invention are as follows：Under the premise of ensuring that cast iron pipe is corrosion resistant, moreover it is possible to satisfaction manufacture,
The environmental requirement of old pipeline after processing, application and dismounting update, accomplishes whole innoxious.
Specific embodiment
The present invention will be further described With reference to embodiment.
Embodiment is a kind of environment-friendly type sanitary sewer.The environment-friendly type sanitary sewer of this example, inner core are cast iron pipe, are cast
The inner wall of iron pipe is coated with paraffin layer, and each cast iron pipe outer wall is electrically connected one piece of spelter.
The preparation method of the environment-friendly type sanitary sewer of this example, includes the following steps：
A, pipe die is mounted on metal mold centrifuge, high temperature liquid iron is continuously injected into pipe die, forms pipe；
B, pipe is taken out after pipe solidification cooling, pipe is closed at both ends, pour into enough melt from one of end
The paraffin of change, then by pipe with the direction of axis horizontal it is horizontal and rotate at least one week；
C, by pipe turn to axis vertical to, open lower section port, flow to end extra paraffin；
D, treat that paraffin is cooled to room temperature.
Wherein, pipe is cooled to and filling wax is carried out when temperature is 80 ± 5 DEG C in step B, and this example is 80 DEG C.To close in step B
0.5 bar is first decompressed in the pipe of envelope hereinafter, pouring into the paraffin of thawing, repressurization, pressure is 2-2.5 bars, is then rotated；This example
In be decompressed to 0.45 bar, then be pressurized to 2.3 bars.In step C, vertical pipe is while extra paraffin is poured out around itself
Axis rotation, the rotating speed of vertical pipe is 600 ± 50r/min, this example 600r/min.
The installation method of the environment-friendly type sanitary sewer of this example, includes the following steps：
A, bright ditch, the width of ditch and the diameter of depth adaptation sewage pipe are excavated on ground；
B, bottom of trench is placed in by sewage pipe is end to end；
C, the position of first sewage pipe is fixed, then paves second sewage pipe to proper height, by its stem
Be connected to the tail portion of first sewage pipe；
D, connection is covered with the paraffin melted in the head and the tail junction of two sewage inside pipe walls；
E, paraffin is treated；
F, step C to step E is repeated in, until remaining sewage pipe, is respectively mounted completion；
G, bright ditch is backfilled, sewage pipe is made to be located at below surface soil.
Wherein, in step D, the paraffin that can melt in inside is directly brushed, can also be in outside in two sewage pipes
The head and the tail junction of wall carries out local warming, and internal corresponding position paraffin is made first to melt reconnection in cooled and solidified.This example is selected
Be inside brush.Each cast iron pipe outer wall is electrically connected one piece of spelter；Spelter be embedded in corresponding sewage pipe just under
Side.When tiny localized seepage occurs in cast iron pipe, the paraffin of thawing can be fixedly bonded to from both sides outside breakthrough and carried out
Closing, without whole replacement.
The environment-friendly type sanitary sewer of this example, using cast iron pipe as core, cast iron is isolated with sewage covered with paraffin layer for inner wall
It opens, cast iron is made not corroded from inside.Cast iron pipe is electrically connected spelter, and spelter prevents cast iron pipe to be corroded in outside.Entire system
Make, process, after application and disassembly process and update old pipeline recovery processing, it is whole harmless, it is environmentally friendly, to soil,
Water source environmental protection, it is harmless to operating personnel.
Claims (10)
1. a kind of environment-friendly type sanitary sewer, including cast iron pipe, it is characterized in that, the inner wall of cast iron pipe is coated with paraffin layer.
2. a kind of preparation method of environment-friendly type sanitary sewer according to claim 1, it is characterized in that, cast iron pipe outer wall electricity
Connect spelter；Spelter is buried in the soil jointly with cast iron pipe.
3. a kind of preparation method of environment-friendly type sanitary sewer, it is characterized in that, include the following steps：
A, pipe die is mounted on metal mold centrifuge, high temperature liquid iron is continuously injected into pipe die, forms pipe；
B, pipe is taken out after pipe solidification cooling, pipe is closed at both ends, enough thawings are poured into from one of end
Paraffin, then by pipe with the direction of axis horizontal it is horizontal and rotate at least one week；
C, by pipe turn to axis vertical to, open lower section port, flow to end extra paraffin；
D, treat that paraffin is cooled to room temperature.
4. a kind of preparation method of environment-friendly type sanitary sewer according to claim 3, it is characterized in that, pipe in step B
It is cooled to when temperature is 80 ± 5 DEG C and carries out filling wax.
5. a kind of preparation method of environment-friendly type sanitary sewer according to claim 3, it is characterized in that, to close in step B
0.5 bar is first decompressed in the pipe of envelope hereinafter, pouring into the paraffin of thawing, repressurization, pressure is 2-2.5 bars, is then rotated.
6. a kind of preparation method of environment-friendly type sanitary sewer according to claim 3, it is characterized in that, in step C, vertically
To pipe while extra paraffin is poured out around own axes rotation.
7. a kind of preparation method of environment-friendly type sanitary sewer according to claim 6, it is characterized in that, vertical pipe
Rotating speed be 600 ± 50r/min.
8. a kind of installation method of environment-friendly type sanitary sewer as described in claim 1, it is characterized in that, include the following steps：
A, bright ditch, the width of ditch and the diameter of depth adaptation sewage pipe are excavated on ground；
B, bottom of trench is placed in by sewage pipe is end to end；
C, the position of first sewage pipe is fixed, then second sewage pipe is paved to proper height, its stem is connected
It is fixed to the tail portion of first sewage pipe；
D, connection is covered with the paraffin melted in the head and the tail junction of two sewage inside pipe walls；
E, paraffin is treated；
F, step C to step E is repeated in, until remaining sewage pipe, is respectively mounted completion；
G, bright ditch is backfilled, sewage pipe is made to be located at below surface soil.
9. a kind of preparation method of environment-friendly type sanitary sewer according to claim 8, it is characterized in that, it, can be in step D
It is directly brushed with the paraffin melted in inside, part can also be carried out to the head and the tail junction of two sewage inside pipe walls in outside and added
Temperature makes internal corresponding position paraffin first melt reconnection in cooled and solidified.
10. a kind of preparation method of environment-friendly type sanitary sewer according to claim 8, it is characterized in that, each cast iron
Pipe outer wall is electrically connected one piece of spelter；Spelter is embedded in the underface of corresponding sewage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711352249.9A CN108188368A (en) | 2017-12-15 | 2017-12-15 | A kind of environment-friendly type sanitary sewer and preparation method thereof and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711352249.9A CN108188368A (en) | 2017-12-15 | 2017-12-15 | A kind of environment-friendly type sanitary sewer and preparation method thereof and installation method |
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| CN108188368A true CN108188368A (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711352249.9A Pending CN108188368A (en) | 2017-12-15 | 2017-12-15 | A kind of environment-friendly type sanitary sewer and preparation method thereof and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024840A (en) * | 2018-07-26 | 2018-12-18 | 钟久安 | A kind of the draining blind pipe and water discharge method of not cracky |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29618928U1 (en) * | 1996-10-31 | 1997-01-09 | GFA Industrie-Abdichtungssysteme GmbH, 21218 Seevetal | Wall composite |
| CN1289862A (en) * | 2000-10-27 | 2001-04-04 | 北京盛康宁科技开发有限公司 | Process for prepared anticorrosion and antiwear composite steel pipe with liner of pyroceram |
| CN1967039A (en) * | 2005-11-14 | 2007-05-23 | 张明亮 | Surface treatment method for stainless steel pipe |
| CN202050796U (en) * | 2011-05-19 | 2011-11-30 | 浙江海洋学院 | Anti-corrosion structure of metallic net cage |
| CN104482315A (en) * | 2014-12-23 | 2015-04-01 | 江苏省常熟环通实业有限公司 | Corrosion-resistant special steel pipe |
| CN105113607A (en) * | 2015-08-28 | 2015-12-02 | 济南城建集团有限公司 | Rainwater pipeline structure and construction method thereof |
-
2017
- 2017-12-15 CN CN201711352249.9A patent/CN108188368A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29618928U1 (en) * | 1996-10-31 | 1997-01-09 | GFA Industrie-Abdichtungssysteme GmbH, 21218 Seevetal | Wall composite |
| CN1289862A (en) * | 2000-10-27 | 2001-04-04 | 北京盛康宁科技开发有限公司 | Process for prepared anticorrosion and antiwear composite steel pipe with liner of pyroceram |
| CN1967039A (en) * | 2005-11-14 | 2007-05-23 | 张明亮 | Surface treatment method for stainless steel pipe |
| CN202050796U (en) * | 2011-05-19 | 2011-11-30 | 浙江海洋学院 | Anti-corrosion structure of metallic net cage |
| CN104482315A (en) * | 2014-12-23 | 2015-04-01 | 江苏省常熟环通实业有限公司 | Corrosion-resistant special steel pipe |
| CN105113607A (en) * | 2015-08-28 | 2015-12-02 | 济南城建集团有限公司 | Rainwater pipeline structure and construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024840A (en) * | 2018-07-26 | 2018-12-18 | 钟久安 | A kind of the draining blind pipe and water discharge method of not cracky |
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| PB01 | Publication | ||
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Application publication date: 20180622 |