CN1727582A - Wrapping formed inspection well prepared from plastic in environmental protection, and method of preparation - Google Patents
Wrapping formed inspection well prepared from plastic in environmental protection, and method of preparation Download PDFInfo
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- CN1727582A CN1727582A CN 200510021346 CN200510021346A CN1727582A CN 1727582 A CN1727582 A CN 1727582A CN 200510021346 CN200510021346 CN 200510021346 CN 200510021346 A CN200510021346 A CN 200510021346A CN 1727582 A CN1727582 A CN 1727582A
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- plastic
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- band shape
- environmental protection
- inspection well
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Abstract
An environmental protection type plastic manhole is made up of the plastic band (or strips) and reinforcing ribs through preparing the plastic band (or strips) through extruding and cooling, winding them on a mould while extruding out the fused plastic onto the plastic band (or strips) for playing the roles of adhesive and reinforcing rib.
Description
Technical field
A kind of borehole wall that the present invention relates to has the plastic inspection well that is applied to plumbing of reinforcing rib in the screw type, especially a kind of by Wrapping formed inspection well prepared from plastic in environmental protection of tubulose, strip or slice plastic (can have reinforcing material) disposable side direction wound form or segmented and preparation method thereof as metal.
Background technology
At present, generally adopt cement and brick make or metal tube is made as the manhole of water supply and sewerage pipeline.Because the blowdown environment is more abominable, the easy peaceful oxidation of the manhole of metal material and influence the life-span has strengthened engineering cost and manufacturing cost own; Adopt cement and brick making, reveal easily, contaminated environment.There has been report to adopt novel material to make manhole,, but on technology manufacturing and structure, all had problems as plastics etc.; Sealing performance is bad, drainage, insufficient strength take place easily, influences workmanship, the seam difficulty, influences pipe line arrangement etc.
Summary of the invention
The present invention is intended to overcome above-mentioned shortcoming, the manhole that is applied to plumbing that provides a kind of environmentally-friendly plastic of new structure form to make, and then the preparation for processing of this manhole is provided.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: be the plastics of band shape or wire or plastic composite and make 360 degree spirals around centerline axis and twine and moltenly stick into type, and there is spiral reinforcing rod at the plastics or the molten mutually place of being connected of plastic composite that are band shape or wire.
Described plastics or the plastic composite that is band shape or wire done the molten type checking well that sticks into of 360 degree spirals windings around centerline axis.
Described plastics that are band shape or wire or plastic composite are made 360 degree spirals around centerline axis and are twined and moltenly stick into type checking well parts, and each parts buckle-type constitutes manhole, perhaps connects with plastic seal coupling sleeve or rubber ring.
The cross section of described plastics that are band shape or wire or plastic composite is rounded, perhaps rectangle.
Describedly be the plastics of band shape or wire or the diameter of plastic composite is the 10-200 millimeter.
Described plastics comprise polyvinyl chloride, polyethylene, polypropylene or other modified plastics.
Described plastic composite is meant that plastic packets has steel or aluminium or glass fiber and the composite material that forms.
The described molten type that sticks into is meant the molten one of extruding by extruding machine with the plastic material of making that sticks into of melting charge, plastic material surface temperature and melting charge isothermal in the molten sticking process.
Described manhole is spiral forming and molten sticking forming, for inside and outside wall plain, tapered body or well body structure circular and the diameter skew but upper well body closes up.
Described manhole body is isometrical or waney.
A kind of manufacture method of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: described inspection well prepared from plastic in environmental protection is made according to the following steps:
A, with granular plastics by article one extrusion apparatus with the mould that cooperates with it and comprise cooling, be pulled in interior auxiliary equipment and make the plastic material that is band shape or wire that diameter is the 10-200 millimeter; Perhaps granular plastics are added steel or aluminium or glass fiber after the fusing of article one extrusion apparatus in die molding process and make the plastic composite that is band shape or wire that diameter is the 10-200 millimeter; Extrusion apparatus feed zone temperature is 120-160 ℃, and extrusion apparatus outlet section temperature is 140-220 ℃;
B, the plastic material that will be band shape or wire or plastic composite twine on the Wrapping formed machine of plastic pipe, while is melted the type that sticks into by second extrusion apparatus melting charge of extruding and the plastic material that is twining or plastic composite, and makes manhole with cylinder pressing compacting in molten sticking process; The discharging opening of melting charge is between the tubing that is twining, and the discharging opening temperature of melting charge is 200-300 ℃, and being the plastic material of band shape or wire or the surface temperature of plastic composite tubing is 200-300 ℃.
The Wrapping formed machine of described plastic pipe is meant and can makes plastic material be 360 degree rotations, and melt the equipment of the type that sticks in rotary course.
Described melting charge is identical with plastic material that twines or plastic composite.As all being polyethylene.
But the upper well body type of described manhole is bullet or well body structure circular and the diameter skew.
Beneficial effect of the present invention shows:
Because said mechanism form plastic inspection well of the present invention, what adopt is spiral forming and molten adhering process and to become inside and outside wall plain, tapered body or well body structure circular and the diameter skew but upper well body closes up, melting charge promptly becomes reinforcing rib in this structure borehole wall, strengthened the ability that the well body bears external force, each seam crossing good seal performance, long service life, antiseptic property and intensity height can satisfy the requirement of various plumbing.
Description of drawings
Fig. 1 is the plastic inspection well cross-sectional view
Fig. 2 is a plastic seal adapter sleeve plan structure schematic diagram among Fig. 1
Fig. 3 is a borehole wall cross-sectional view
Fig. 4 is a borehole wall A-A cross-sectional view
Fig. 5 is plastic inspection well " bullet " and " journal offset type bullet " equipment and artwork
Fig. 6 is plastic inspection well " bullet winding machine " structural representation
Fig. 7 is the left TV structure schematic diagram of plastic inspection well " bullet winding machine "
Fig. 8 is plastic inspection well winding machine " cylinder combination with one heart " structural representation
Fig. 9 is the left TV structure schematic diagram of plastic inspection well winding machine " cylinder combination with one heart "
Figure 10 is plastic inspection well winding machine " combination of a desaxe cylinder " structural representation
Figure 11 is the left TV structure schematic diagram of plastic inspection well winding machine " combination of desaxe cylinder "
Figure 12 is plastic inspection well winding machine " combination of a pinch roller movable stand " structural representation
Figure 13 is the left TV structure schematic diagram of plastic inspection well winding machine " combination of pinch roller movable stand "
Figure 14 is plastic inspection well winding machine " transmission mechanism " structural representation
The specific embodiment
For the purpose of illustration, below in conjunction with accompanying drawing content of the present invention is described in further detail, all technology that realizes based on foregoing of the present invention all belong to scope of the present invention.
Embodiment 1
A kind of Wrapping formed inspection well prepared from plastic in environmental protection, be the plastics of band shape or wire or plastic composite 1 and make 360 degree spirals around centerline axis and twine and moltenly stick into type, and the plastics or the molten mutually place of being connected of plastic composite that are band shape or wire there are spiral reinforcing rod.Described plastics or the plastic composite that is band shape or wire done the molten type checking well upper well body 32 that sticks into of 360 degree spirals windings around centerline axis.Described plastics that are band shape or wire or plastic composite are made 360 degree spirals around centerline axis and are twined and moltenly stick into type checking well parts, and each parts buckle-type constitutes manhole, perhaps connects with plastic seal coupling sleeve or rubber ring 33.The cross section of described plastics that are band shape or wire or plastic composite is rounded, perhaps rectangle.Describedly be the plastics of band shape or wire or the diameter of plastic composite is the 10-200 millimeter.Described plastics comprise polyvinyl chloride, polyethylene, polypropylene or other modified plastics.Described plastic composite is meant that plastic packets has steel or aluminium or glass fiber and the composite material that forms.The described molten type that sticks into is meant the molten one of extruding by extruding machine with the plastic material of making that sticks into of melting charge, plastic material surface temperature and melting charge isothermal in the molten sticking process.Described manhole is spiral forming and molten sticking forming, for inside and outside wall plain, tapered bodies or well body structure circular and the diameter skew but upper well body 32 closes up.Described manhole body is isometrical or waney.
Embodiment 2
Manhole upper well body 32 is isometrical or not isometrical or journal offset.The well body of not isometrical journal offset formula mainly is used in major diameter main well body (more than the 1200mm) manhole, be beneficial to climb the setting of stepping on device and maintenance worker about.The plastic inspection well borehole wall part sectioned view of this 360 degree spiral forming as shown in Figure 3.
In the plastic inspection well of said structure form, described reinforcing rib and basic profile structure thereof can adopt multi-form structure according to use field or purpose needs.For example,, can use rectangular sheet, also can use hollow rectangle material, tubing, bar etc., can use plastics fully, also can use plastics and steel or composite materials such as aluminium or glass fiber from borehole wall cross section 34 shapes.Described plastics comprise polyvinyl chloride, polyethylene, polypropylene or other modified plastics.The cross section that is the plastics of band shape or wire or plastic composite 1 is rounded, perhaps rectangle.Being the plastics of band shape or wire or the diameter of plastic composite is the 10-200 millimeter.Plastic composite is meant that plastic packets has steel or aluminium or glass fiber and the composite material that forms.The molten type that sticks into is meant the molten one of extruding by extruding machine with the plastic material of making that sticks into of molten plastic, plastic material surface temperature and melting charge isothermal in the molten sticking process.Described manhole is spiral forming and molten sticking forming, for inside and outside wall plain, tapered bodies or well body structure circular and the diameter skew but upper well body 32 closes up.The manhole body is isometrical or waney.
In said structure shape worker's plastic inspection well, described plastic material or the plastic composite that is band shape or wire done the molten type checking well that sticks into of 360 degree spirals windings around centerline axis; Perhaps described plastic material that is band shape or wire or plastic composite are made 360 degree spirals around centerline axis and are twined and moltenly stick into type checking well parts, and each parts cassette constitutes manhole, perhaps connects with plastic seal coupling sleeve or rubber ring.The shape of manhole parts comprises tabular (base plate), conical, cylindrical, trapezoidal.
In the plastic inspection well method of preparation said structure form of the present invention, can be undertaken by two cover extrusion apparatus and corresponding auxiliary equipment.At first, by auxiliary equipment such as first extrusion apparatus and rectangle timber die that cooperates with it and corresponding coolings, make rectangle plastic or other shape plastic, Wrapping formed again, adopt second extrusion apparatus to extrude melt and stick together the plastic of itself and first extrusion equipment is molten securely then, promptly become the manhole body of moulding.Again the manhole body with moulding flatten, compacting.
Because said mechanism form plastic inspection well of the present invention, employing be spiral forming and molten sticking forming.For inside and outside wall plain, but upper well body 32 closes up tapered bodies or well body structure circular and the diameter skew, melting charge promptly becomes reinforcing rib in this structure borehole wall, has strengthened the ability that the well body bears external force.
A kind of manufacture method of Wrapping formed inspection well prepared from plastic in environmental protection upper well body, the inspection well prepared from plastic in environmental protection upper well body is made according to the following steps: a, with granular plastics by article one extrusion apparatus and the mould that cooperates with it and comprise cooling, being pulled in interior auxiliary equipment, to make diameter be 50 millimeters the plastic material that is band shape or wire; Perhaps with granular plastics through article one extrusion apparatus fusing back in die molding process adding steel or aluminium or glass fiber to make diameter be 50 millimeters the plastic composite that is band shape or wire; Extrusion apparatus feed zone temperature is 160 ℃, and extrusion apparatus outlet section temperature is 180 ℃; B, the plastic material that will be band shape or wire or plastic composite twine on the Wrapping formed machine of plastic pipe, simultaneously by second extrusion apparatus melting charge of extruding and the plastic material that is twining or the molten type that sticks into of plastic composite; The discharging opening of melting charge between the tubing that is twining, 250 ℃ of the discharging opening temperature of melting charge, being the plastic material of band shape or wire or the surface temperature of plastic composite tubing is 250 ℃.
The Wrapping formed machine of plastic pipe is meant and can makes plastic material be 360 degree rotations, and melt the equipment of the type that sticks in rotary course.Melting charge is identical with plastic material that twines or plastic composite.As all being polyethylene.But the upper well body type of manhole is bullet or well body structure circular and the diameter skew.
Embodiment 4
A kind of Wrapping formed inspection well prepared from plastic in environmental protection, be the plastic material of band shape or wire or plastic composite and make 360 ° of spirals around centerline axis and twine and moltenly stick into type, and the plastic material or the molten mutually place of being connected of plastic composite that are band shape or wire there are spiral reinforcing rod.
The plastic material or the plastic composite that are band shape or wire are done the molten type checking well upper well body 32 that sticks into of 360 degree spirals windings around centerline axis.Be the plastic material of band shape or wire or plastic composite and make 360 degree spirals around centerline axis and twine and moltenly stick into type checking well parts, each parts buckle-type constitutes manhole, perhaps connects with plastic seal coupling sleeve or rubber ring.The cross section that is the plastic material of band shape or wire or plastic composite is rounded, perhaps rectangle.Being the plastic material of band shape or wire or the diameter of plastic composite is the 10-200 millimeter.Plastics comprise poly-polyethylene, polyethylene, polypropylene or other modified plastics.Plastic composite is meant that plastic packets has steel or aluminium or glass fiber and the composite material that forms.The molten type that sticks into is meant the molten one of extruding by extruding machine with the section bar of making that sticks into of molten plastic, molten sticking process medium section surface temperature and the basic isothermal of melting charge.Described manhole is spiral forming and molten sticking forming, for inside and outside wall plain, tapered bodies or well body structure circular and the diameter skew but upper well body 32 closes up.Described manhole body is isometrical or waney.
A kind of manufacture method of Wrapping formed inspection well prepared from plastic in environmental protection, inspection well prepared from plastic in environmental protection is made according to the following steps: a, with granular plastics by article one extrusion apparatus and the mould that cooperates with it and comprise cooling, be pulled in interior auxiliary equipment and make the plastic material that is band shape or wire that diameter is the 10-200 millimeter; Perhaps granular plastics are added steel or aluminium or glass fiber after the fusing of article one extrusion apparatus in die molding process and make the plastic composite that is band shape or wire that diameter is the 10-200 millimeter; Extrusion apparatus feed zone temperature is 120-160 ℃ (setting according to different plastic raw materials), extrusion apparatus outlet section temperature is 140-220 ℃ (setting according to different plastic raw materials), b, the plastic material that will be band shape or wire or plastic composite twine on the Wrapping formed machine of plastic pipe, while is melted the type that sticks into by second extrusion apparatus melting charge of extruding and the plastic material that is twining or plastic composite, and makes manhole with cylinder pressing compacting in molten sticking process; The discharging opening of melting charge is between the tubing that is twining, and 200-300 ℃ of the discharging opening temperature of melting charge is the plastic material of band shape or wire or surface temperature 200-300 ℃ of plastic composite tubing.
The Wrapping formed machine of plastic pipe is meant and can makes plastic material be 360 degree rotations, and melt the equipment of the type that sticks in rotary course.Melting charge is identical with plastic material that twines or plastic composite.As all being polyethylene.But the upper well body type of manhole is bullet or well body structure circular and the diameter skew.
Because said mechanism form plastic inspection well of the present invention, what adopt is spiral forming and molten adhering process and to become inside and outside wall plain, tapered body or well body structure circular and the diameter skew but upper well body 32 closes up, melting charge promptly becomes reinforcing rib in this structure borehole wall, strengthened the ability that the well body bears external force, each seam crossing good seal performance, long service life, antiseptic property is good, intensity is high, can satisfy the requirement of various plumbing.
Embodiment 6
Inspection well prepared from plastic in environmental protection that disposable side direction wound form of the present invention or segmented are Wrapping formed and preparation method thereof can be made by a kind of Wiring apparatus of making Wrapping formed inspection well prepared from plastic in environmental protection, i.e. the Wrapping formed machine of plastic pipe.The concrete structure of this equipment as shown in Figure 6.A kind of Wiring apparatus of making Wrapping formed inspection well prepared from plastic in environmental protection upper well body, comprise power set, transmission device, underframe 1, the movable stand 2 that can on underframe 1, move, also comprise through mandrel 3 being fixed on winding cylinder 4 on the movable stand 2, being arranged at the pressing wheel mechanism (31) that twines cylinder 4 sides, the guide wheel units 28 that is arranged at pressing wheel mechanism (31) top, be fixed on baking oven assembly 27 on the movable stand 2 near the plastic material upstream end.Seat board 8, the mounting 9 that is connected with seat board 8 that described pressing wheel mechanism (31) comprises the guide peg 5 that is fixed on the movable stand 2, the leading truck 7 that is slidingly connected with the fairlead 6 of guide peg 5 threaded engagement, with guide peg 5, be connected with leading truck 7 with fairlead 6, be arranged on handwheel 10 and bearing 11 on the mounting 9, be arranged on pinch roller 12 on the bearing 11, be arranged on the handle 13 on the guide peg 5.Described winding cylinder 4 is provided with diameter regulating mechanism, and the winding cylinder 4 of described Wiring apparatus is concentric or eccentric, and described winding cylinder 4 is provided with cylinder profiled member 14, and described cylinder profiled member 14 is at least three parts.Described diameter regulating mechanism comprises and is arranged on the hinge 15 that twines on the cylinder 4, is connected with hinge 15 and drives hinge 15 straight-line rocker arm shafts 16, and the supporting 17 of rocker arm shaft 16 threaded engagement, be arranged on handle 13 on the rocker arm shaft 16, be arranged on the connecting plate 19 of secure rocker 16 on the winding cylinder 4.Described pressing wheel mechanism (31) is many group pressing wheel devices.Described power set are to be fixed on the motor 20 on the movable stand 2, the reducer 21 that is connected with motor 20, described transmission device comprise be connected with reducer 21 gears or sprocket wheel be fixed on drive lead screw 23 on the underframe, roller shaft 24 through seat 22.Be provided with regulating wheel 25 between described reducer 21 and roller shaft 24, the drive lead screw 23.
As shown in Figure 5, in plastic inspection well " bullet " and " journal offset type bullet " equipment and artwork, the equipment that comprises mainly contain the section bar of section bar unreeling machine 29, speed stabilizing feed supply with machine 30, extrude melting charge melt extruder 18, be used for the bullet winding machine 26 of Wrapping formed bullet manhole upper well body 32.
Because the winding roller frame shape of this equipment is changeable, can produce dissimilar manholes according to different needs, adopt many group pressing wheel devices, further guarantee and the plastic material that improved the melting charge extruded by first extrusion equipment and first extrusion equipment can melt securely and sticks together; Wiring apparatus is done arbitrarily angled adjustment at horizontal axis, helps manhole upper well body 32 and makes many specifications multiform shape equipment.
Obviously; those of ordinary skill in the art is according to technological know-how of being grasped and customary means; according to above said content, can also make the various ways that does not break away from fundamental technics thought of the present invention, these pro forma conversion are all within protection scope of the present invention.
Claims (8)
1, a kind of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: be the plastic material of band shape or wire or plastic composite and make 360 degree spirals around centerline axis and twine and moltenly stick into type, and there is spiral reinforcing rod at the plastic material or the molten mutually place of being connected of plastic composite that are band shape or wire.
2, a kind of Wrapping formed inspection well prepared from plastic in environmental protection according to claim 1 is characterized in that: described plastic material or the plastic composite that is band shape or wire done the molten type checking well that sticks into of 360 degree spirals windings around centerline axis.
3, a kind of Wrapping formed inspection well prepared from plastic in environmental protection according to claim 1, it is characterized in that: described plastic material or the plastic composite that is band shape or wire made the molten type checking well parts that stick into of 360 degree spirals windings around centerline axis, each parts buckle-type constitutes manhole, perhaps connects with plastic seal adapter sleeve or rubber ring (33).
4, according to claim 1,2 or 3 described a kind of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: the described plastic material of band shape or wire or the rounded or rectangle of cross section of plastic composite of being describedly is the plastic material of band shape or wire or the diameter of plastic composite is the 10-200 millimeter.
5, according to claim 1,2 or 3 described a kind of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: described plastic composite is meant that plastic packets has steel or aluminium or glass fiber and the composite material that forms.
6, according to claim 1,2 or 3 described a kind of Wrapping formed inspection well prepared from plastic in environmental protection, it is characterized in that: close up into a cone shape or the well body structure of toroidal and diameter skew but described manhole is spiral forming and the molten sticking upper well body that forms.
7, the manufacture method of the described Wrapping formed inspection well prepared from plastic in environmental protection of a kind of claim 1, it is characterized in that: described inspection well prepared from plastic in environmental protection is made according to the following steps:
A, with granular plastics by article one extrusion apparatus with the mould that cooperates with it and comprise cooling, be pulled in interior auxiliary equipment and make the plastic material that is band shape or wire that diameter is the 10-200 millimeter; Perhaps granular plastics are added steel or aluminium or glass fiber after the fusing of article one extrusion apparatus in die molding process and make the plastic composite that is band shape or wire that diameter is the 10-200 millimeter; Extrusion apparatus feed zone temperature is 120-160 ℃, and extrusion apparatus outlet section temperature is 140-220 ℃;
B, the plastic material that will be band shape or wire or plastic composite twine on the Wrapping formed machine of plastic pipe, while is melted the type that sticks into by second extrusion apparatus melting charge of extruding and the plastic that is twining or plastic composite, and makes manhole with cylinder pressing compacting in molten sticking process; The discharging opening of melting charge is between the tubing that is twining, and the discharging opening temperature of melting charge is 200-300 ℃, and being the plastic material of band shape or wire or the surface temperature of plastic composite tubing is 200-300 ℃.
8, the manufacture method of a kind of Wrapping formed inspection well prepared from plastic in environmental protection according to claim 7, it is characterized in that: described melting charge is identical with plastic that twines or plastic composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100213460A CN100441783C (en) | 2005-07-28 | 2005-07-28 | Wrapping formed inspection well prepared from plastic in environmental protection, and method of preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100213460A CN100441783C (en) | 2005-07-28 | 2005-07-28 | Wrapping formed inspection well prepared from plastic in environmental protection, and method of preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727582A true CN1727582A (en) | 2006-02-01 |
| CN100441783C CN100441783C (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100213460A Expired - Fee Related CN100441783C (en) | 2005-07-28 | 2005-07-28 | Wrapping formed inspection well prepared from plastic in environmental protection, and method of preparation |
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| CN (1) | CN100441783C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046639A (en) * | 2011-10-13 | 2013-04-17 | 肖玉光 | Checking and catch basin for drainage pipeline and production method thereof |
| CN103981899A (en) * | 2014-05-07 | 2014-08-13 | 沙湾县鑫驰复合材料制品有限公司 | Composite material manhole making machine |
| CN104321489A (en) * | 2012-03-22 | 2015-01-28 | 彼得·埃申布伦纳 | Method for renovating a sewer manhole |
| CN104859135A (en) * | 2015-06-04 | 2015-08-26 | 周茂振 | Conical winding forming mould as well as forming equipment and process of conical tank or barrel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08142195A (en) * | 1994-11-16 | 1996-06-04 | Sekisui Chem Co Ltd | Lining method for manhole |
| DK1194714T3 (en) * | 1999-06-18 | 2004-04-19 | Tunetanken As | Process for in-situ refurbishment of wells, especially sewer wells, as well as prefabricated lining for use therewith |
| CN2457423Y (en) * | 2001-02-15 | 2001-10-31 | 张永东 | Pipe wall screw winding formed plastic tube |
| CN1191441C (en) * | 2002-11-18 | 2005-03-02 | 蒯一希 | Screw type corrugated plastic pipe material and its manufacturing method |
| CN1624253A (en) * | 2003-12-02 | 2005-06-08 | 福建亚通新材料科技股份有限公司 | Underground pipe network assembling type plastic inspection well |
-
2005
- 2005-07-28 CN CNB2005100213460A patent/CN100441783C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046639A (en) * | 2011-10-13 | 2013-04-17 | 肖玉光 | Checking and catch basin for drainage pipeline and production method thereof |
| CN104321489A (en) * | 2012-03-22 | 2015-01-28 | 彼得·埃申布伦纳 | Method for renovating a sewer manhole |
| CN104321489B (en) * | 2012-03-22 | 2016-06-22 | 彼得·埃申布伦纳 | For rebuilding the system of pipe well |
| CN103981899A (en) * | 2014-05-07 | 2014-08-13 | 沙湾县鑫驰复合材料制品有限公司 | Composite material manhole making machine |
| CN104859135A (en) * | 2015-06-04 | 2015-08-26 | 周茂振 | Conical winding forming mould as well as forming equipment and process of conical tank or barrel |
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| Publication number | Publication date |
|---|---|
| CN100441783C (en) | 2008-12-10 |
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Granted publication date: 20081210 Termination date: 20120728 |