CN204592615U - A kind of armored sludge discharge pipe - Google Patents
A kind of armored sludge discharge pipe Download PDFInfo
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- CN204592615U CN204592615U CN201520094403.7U CN201520094403U CN204592615U CN 204592615 U CN204592615 U CN 204592615U CN 201520094403 U CN201520094403 U CN 201520094403U CN 204592615 U CN204592615 U CN 204592615U
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Abstract
The utility model discloses a kind of armored sludge discharge pipe, belong to dredging works equipment technology field.The technical solution of the utility model is: a kind of armored sludge discharge pipe, and by managing in the taper of multiple armouring body, armouring body outer tube and being bolted connection forms; In described armouring body taper, pipe comprises a circle ring disk, to be extended in the taper of required sludge drainage pipe caliber manage by circle ring disk inner diameter end to side, inside its taper inner tube outlet end, a working surface is set, working surface parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube is a structure in flute profile rubber ring equipped mutually with the circle ring disk of pipe in the taper of armouring body.Compared with prior art, the scheme that possesses skills is reliable for the utility model, has both met the bending requirement being used for adjusting mud delivery pipeline direction, can reach again the comparatively outstanding substantive distinguishing features and positive progress that are close with the wear-resisting property of metal composite sludge drainage pipe.
Description
Technical field
The utility model relates to the correlative equipment technical field used in dredging works, particularly relates to a kind of technical field of the armored sludge discharge pipe for dredging works.
Background technique
River course, navigation channel, basin is dredged deeply, shoal, harbour, the mud delivery pipeline that the mechanical dredging engineerings such as harbour foundation trench all need a large amount of sludge drainage pipes to be formed by connecting realizes conveying, and in whole mud delivery pipeline the indispensable spoil disposal bend pipe for adjusting mud delivery pipeline direction, so far the Self-float mud discharging rubber pipe that always uses of major part, because Self-float mud discharging rubber pipe is being carried as rock, coral reef, ores etc. have during the solid material of sharp-edged and can be worn through very soon, lose use value, and whole dredging works system downtime will be caused, carry out repairing or whole mud delivery pipeline is scrapped, expend valuable engineering time and higher pipeline maintainance expense.For solving this technical problem, technological deficiency existing for further improvement Self-float mud discharging rubber pipe, disclosed in State Intellectual Property Office on 06 29th, 2011, the patent No. is: the technological scheme of ZL200920235203.3 and December in 2009 notice of authorization on the 02nd the patent No. be: the technological scheme of ZL200920036395.5 is all solve the technological deficiency existed in background technique, the technological scheme adding the good organic adhesion agent of wear-resisting property and wear-resisting steel loop at the innermost layer of sebific duct is taken in raising wear-resisting property, for the working life of improving Self-float mud discharging rubber pipe provides new reliable technical measures.But the product own defect existing due to Self-float mud discharging rubber pipe itself and cause and there is following deficiency: although first Self-float mud discharging rubber pipe has certain bending properties, but be used as spoil disposal bend pipe play adjustment mud delivery pipeline direction function still there is obvious inadequate natural endowment, particularly when supporting the use with binding type supporting metal sludge drainage pipe, it shows more outstanding; It two is Self-float mud discharging rubber pipes by increasing the technological scheme of organic adhesion agent and wear-resisting steel loop at the innermost layer of sebific duct, reach the wear-resisting property improving rubber pipe self, but in product price, working life, Product transport cost etc., also have quite poor distance compared with the metal sludge drainage pipe good with wear-resisting property; It three is that the skin of Self-float mud discharging rubber pipe is all made with rubber material, and use as being torn very soon when carrying out the Active workings such as conveying rock, coral reef on the ground such as mining area, the South Sea in the presence of a harsh environment, once fragmentation can not use, shut-down certainly will be caused; Therefore, how to design on the basis of existing technology, manufacture a kind of armored sludge discharge pipe both satisfied purposes being used for adjusting mud delivery pipeline direction, can reach again simultaneously and be close with the wear-resisting property of metal composite sludge drainage pipe, the working life of comprehensive raising metal sludge drainage pipe, reduce the cost of production of dredging works, improve Business Economic Benefit, this is problems urgently to be resolved hurrily for those skilled in the art.
Summary of the invention
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, and provide a kind of design concept novelty, technological scheme reliable, both the bending requirement being used for adjusting mud delivery pipeline direction had been met, can reach again and be close with the wear-resisting property of metal composite sludge drainage pipe, the working life of comprehensive raising metal sludge drainage pipe, reduce the cost of production of dredging works, improve Business Economic Benefit armored sludge discharge pipe.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of armored sludge discharge pipe, comprise the flange plate at armouring body and body two ends, its special way is described armouring body by managing in the taper of multiple armouring body, armouring body outer tube and being bolted connection forms; In described armouring body taper, pipe comprises a circle ring disk, to be extended in the taper of required sludge drainage pipe caliber manage by circle ring disk inner diameter end to side, inside its taper inner tube outlet end, a working surface is set, working surface parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube is a structure in flute profile rubber ring equipped mutually with the circle ring disk of pipe in the taper of armouring body.
For solving the problems of the technologies described above further, the preferred version of technique scheme is:
A kind of armored sludge discharge pipe, comprises the flange plate at armouring body and body two ends, it is characterized in that described armouring body by managing in multiple armouring conical tube, armouring body outer tube and being bolted connection forms; In described armouring body taper, pipe comprises a circle ring disk, to be extended in the taper of required sludge drainage pipe caliber manage by circle ring disk inner diameter end to side, inside its taper inner tube outlet end, a working surface is set, working surface parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube is a structure in flute profile rubber ring equipped mutually with the circle ring disk of pipe in the taper of armouring body; Establish two the semi-tubular dredge pipe buoys connected as one by bolt outside described armouring body outer tube, the outer surface of two semi-tubular dredge pipe buoys is provided with a stainless steel coating layer.
Long degree≤armored pipes external length of tube 30-60 ㎜ of pipe in armouring body described above, and be inserted into the inner side of adjacent armouring body entry end.
The flange plate at armouring body two ends described above is entry end flange plate, outlet end flange dish; Entry end flange plate is grooved ring structure, is arranged on the entry end of armored pipes body unit; Outlet end flange dish is the grooved ring structure of cone table shape, and the outside of pipe in the armouring body taper that its entrance is sleeved on armouring body outlet end, outlet end is consistent with required sludge drainage pipe caliber.
In armouring body described above taper, the outlet end arranged outside of pipe is a spherical arc structure.
In armouring body taper described above, the tapering of pipe is 1:5 ~ 10, and the face width inside its outlet end is 40-80 ㎜.
Two semi-tubular dredge pipe buoys described above are inner wall layer, the outer wall layer be made up of elastomeric layer, and be filled with foamed material layer in its closed cavity formed, be provided with a metal web frame layer connected as one in buoyancy aid body connecting part and buoyancy aid inner body wall layer.
The structure of metal web frame layer described above is buoyancy aid body connecting part is sheet metal overall structure, and the metal web frame layer of inner wall layer is any one of frame structure, sheet metal overall structure or single Deformed Steel Bars structure.
Elastomeric layer described above is the combination of any one or wantonly two kinds in vulcanized rubber material layer, thermoplastic elastic material layer or urethane material.
1-5 layer fabric reinforcement is provided with in the elastomeric layer of outer wall layer described above, buoyancy aid body connecting part.
The utility model compared with prior art has following substantive distinguishing features and positive progress:
The first due to technological scheme that the utility model adopts be adopt pipe in the taper of multiple armouring body, armouring body outer tube and two semi-tubular dredge pipe buoys be bolted connection formation armored pipes body unit, be equipped with two ends flange plate and form the design technology project of armored sludge discharge pipe.Make the technical program the technical requirements of tortuosity >=35 of armored sludge discharge pipe ° is decomposed into multiple armored pipes body unit integrally acting in conjunction realize, thus make that armored sludge discharge pipe described in the utility model compared with prior art has design concept novelty, technological scheme is reliable, fully can meet the bending requirement in mud delivery pipeline direction, for metal composite sludge drainage pipe support the use the substantive distinguishing features creating precondition.
It two are technological schemes that the utility model adopts is pipe pipe ranges more external than armored pipes in the taper of armouring body, and be inserted into adjacent armouring body entry end, and the technological scheme of a working surface is set inside armouring body taper inner tube outlet end, to improve the wear-resisting property of armored sludge discharge inner tube wall, reach close with the wear-resisting property of metal composite sludge drainage pipe and matching used object with it, the working life of comprehensive raising metal sludge drainage pipe, reduce the cost of production of dredging works, improving Business Economic Benefit provides new, the technological scheme of technically reliable, this compared with prior art, really create positive effect and there is substantive distinguishing features and positive progress.
It three are technological schemes that the utility model adopts is be bolted connection at arranged outside one or two semi-tubular dredge pipe buoy of armouring body outer tube, and the technological scheme of a stainless steel coating layer is provided with at the outer surface of buoyancy aid, thus make armored sludge discharge pipe described in the utility model while having stronger buoyancy and tortuosity >=35 ° two technical orders, also there is stronger tear-resistant performance, resistance to rock, the jolt capacity of coral reef, can meet and use as in mining area in the presence of a harsh environment, the ground such as the South Sea carry out conveying rock, particular/special requirement during the Active workings work such as coral reef, this is compared with prior art had outstanding substantive distinguishing features and significant progress.
Accompanying drawing explanation
Included accompanying drawings provides further understanding of the present utility model, and it is incorporated in this specification the part forming this specification, and described accompanying drawing shows embodiment of the present utility model and is used from specification one explains principle of the present utility model.Reference character identical in the accompanying drawings represents identical parts.
In the accompanying drawings:
Fig. 1 is the structural representation of a kind of armored sludge discharge pipe of the utility model embodiment 1.
Fig. 2 is the surface structure schematic diagram of a kind of armored sludge discharge pipe of the utility model embodiment 2.
Fig. 3 is the structure plan view of the dredge pipe buoy in Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the structural representation of a kind of armored sludge discharge pipe of the utility model embodiment 3.
Reference character: pipe 2.3-working surface 2.4 armouring body entry end 2.5-spherical arc structure 3-armouring body outer tube 4-bolt 5-outlet end flange dish 6-armored sludge discharge pipe buoyancy aid 6.1-inner wall layer 6.2-outer wall layer 6.3-foamed material layer 6.4-buoyancy aid body connecting part 6.5 metal web frame layer 6.6-fabric reinforcement 7-stainless steel coating layer in pipe 2.1-circle ring disk 2.2-taper in the taper of 1-entry end flange plate 2-armouring body.
Embodiment
Describe the specific structural details of a kind of armored sludge discharge pipe of the utility model in detail below in conjunction with accompanying drawing and install and use process, the restriction to the utility model claim of going up in all senses must not be interpreted as.
Embodiment 1:
A kind of armored sludge discharge pipe (see Fig. 1) of the utility model embodiment 1, comprises the flange plate at armouring body and body two ends, and the armouring body described in it is made up of pipe 2, armouring body outer tube 3 in the taper of multiple armouring body and being fastenedly connected with bolt 4; In described armouring body taper, pipe 2 comprises a circle ring disk 2.1, to be extended to pipe 2.2 in the taper of required sludge drainage pipe caliber by circle ring disk 2.1 inner diameter end to side, in its taper, inside pipe 2.2 outlet end, a working surface 2.3 is set, working surface 2.3 parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube 3 is a structure in flute profile rubber ring be equipped with mutually with the circle ring disk 2.1 of pipe 2 in the taper of armouring body.
The preferred version of technique scheme is:
Long degree≤armouring body outer tube 3 length 60 ㎜ of pipe 2 in armouring body described above, and be inserted into the inner side of adjacent armouring body entry end 2.4.
The flange plate at armouring body two ends described above is entry end flange plate 1, outlet end flange dish 5; Entry end flange plate 1 is grooved ring structure, is arranged on the entry end 2.4 of armored pipes body unit; Outlet end flange dish 5 is the grooved ring structure of cone table shape, and the outside of pipe 2 in the armouring body taper that its entrance is sleeved on armouring body outlet end, outlet end is consistent with required sludge drainage pipe caliber.
In armouring body taper described above, the tapering of pipe 2 is 1:10, and the face width inside its outlet end is 40 ㎜.
More than form a static structure of a kind of armored sludge discharge pipe of the utility model embodiment 1.
The armored sludge discharge Guan Yi for dredging works described in the present embodiment 1 is applicable to the land, region such as inland rivers, lake, harbour and is used as conveying as adjusted the purposes in mud delivery pipeline direction when rock, coral reef, ore etc. have a solid material of sharp-edged, is close with the wear-resisting property of metal composite sludge drainage pipe and matching used with it.
Embodiment 2:
A kind of armored sludge discharge pipe (see Fig. 1, Fig. 2, Fig. 3, Fig. 4) of the utility model embodiment 2, comprise the flange plate at armouring body and body two ends, the armouring body described in it is made up of pipe 2, armouring body outer tube 3 in multiple armouring conical tube and being fastenedly connected with bolt 4; In described armouring body taper, pipe 2 comprises a circle ring disk 2.1, to be extended to pipe 2.2 in the taper of required sludge drainage pipe caliber by circle ring disk 2.1 inner diameter end to side, in its taper, inside pipe 2.2 outlet end, a working surface 2.3 is set, working surface 2.3 parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube 3 is a structure in flute profile rubber ring be equipped with mutually with the circle ring disk 2.1 of pipe 2 in the taper of armouring body; The outer surface of two semi-tubular dredge pipe buoys, 5, two the semi-tubular dredge pipe buoys 5 establishing to be connected as one by bolt outside described armouring body outer tube 3 is provided with a stainless steel coating layer 7.
Length 2≤armouring body outer tube 3 length 40 ㎜ of pipe in described armouring body, and be inserted into the inner side of adjacent armouring body entry end 2.4.
The flange plate at described armouring body two ends is entry end flange plate 1, outlet end flange dish 5; Entry end flange plate 1 is grooved ring structure, is arranged on the entry end 2.4 of armored pipes body unit; Outlet end flange dish 5 is the grooved ring structure of cone table shape, and the outside of pipe 2 in the armouring body taper that its entrance is sleeved on armouring body outlet end, outlet end is consistent with required sludge drainage pipe caliber.
In described armouring body taper, the tapering of pipe 2 is 1:5, and the face width inside its outlet end is 60 ㎜.
Described two semi-tubular dredge pipe buoys 6 are inner wall layer 6.1, the outer wall layer 6.2 be made up of elastomeric layer, and be filled with foamed material layer 6.3 in its closed cavity formed, be provided with a metal web frame layer 6.5 connected as one in buoyancy aid body connecting part 6.4 and buoyancy aid inner body wall layer 6.1.
The structure of described metal web frame layer 6.5 is buoyancy aid body connecting parts 6.4 is sheet metal overall structure, and the metal web frame layer of inner wall layer 6.1 is frame structure.
The inner wall layer 6.1 that described elastomeric layer is made is vulcanized rubber material layer, outer wall layer 6.2 is thermoplastic elastic material layer.
More than form a static structure of a kind of armored sludge discharge pipe of the utility model embodiment 2.
Armored sludge discharge pipe described in the present embodiment 2 be with operating environment and condition more severe, require that sludge drainage pipe has anti-storm, crash-resistant ability is strong, uninterrupted working time is long, have as rock, coral reef, ore etc. the purposes adjusting mud delivery pipeline direction during the solid material of sharp-edged as conveying for sea, is close with the wear-resisting property of metal composite sludge drainage pipe and matching used with it.
Embodiment 3:
A kind of armored sludge discharge pipe (see Fig. 2, Fig. 3, Fig. 4, Fig. 5) of the utility model embodiment 3, comprise the flange plate at armouring body and body two ends, the armouring body described in it is made up of pipe 2, armouring body outer tube 3 in the taper of multiple armouring body and being fastenedly connected with bolt 4; In described armouring body taper, pipe 2 comprises a circle ring disk 2.1, to be extended to pipe 2.2 in the taper of required sludge drainage pipe caliber by circle ring disk 2.1 inner diameter end to side, in its taper, inside pipe 2.2 outlet end, a working surface 2.3 is set, working surface 2.3 parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube 3 is a structure in flute profile rubber ring be equipped with mutually with the circle ring disk 2.1 of pipe 2 in the taper of armouring body; The outer surface of two semi-tubular dredge pipe buoys, 6, two the semi-tubular dredge pipe buoys 6 establishing to be connected as one by bolt outside described armouring body outer tube 3 is provided with a stainless steel coating layer 7.
In armouring body described above taper, the outlet end arranged outside of pipe 2 is a spherical arc structure 2.5, long degree≤armored pipes external length of tube 30 ㎜ of pipe in described armouring body, and is inserted into the inner side of adjacent armouring body entry end 2.4.
The flange plate at armouring body two ends described above is entry end flange plate 1, outlet end flange dish 5; Entry end flange plate 1 is grooved ring structure, is arranged on the entry end 2.4 of armored pipes body unit; Outlet end flange dish 5 is the grooved ring structure of cone table shape, and the outside of pipe 2 in the armouring body taper that its entrance is sleeved on armouring body outlet end, outlet end is consistent with required sludge drainage pipe caliber.
In armouring body taper described above, the tapering of pipe 2 is 1:8, and the face width inside its outlet end is 80 ㎜.
Described above two semi-tubular dredge pipe buoys 6 are inner wall layer 6.1, the outer wall layer 6.2 be made up of elastomeric layer, and be filled with foamed material layer 6..3 in its closed cavity formed, be provided with a metal web frame layer 6.5 connected as one in buoyancy aid body connecting part 6.4 and buoyancy aid inner body wall layer 6.1.The structure of described metal web frame layer 6.5 is buoyancy aid body connecting parts 6.4 is sheet metal overall structure, and the metal web frame layer of inner wall layer is single Deformed Steel Bars structure (or sheet metal overall structure); The inner wall layer 6.1 that described elastomeric layer is made is urethane material, outer wall layer 6.2 is vulcanized rubber material layer, is provided with 1-3 (can arrange 1-5 layer as required) layer fabric reinforcement 6.6 in the elastomeric layer of outer wall layer 6.1, buoyancy aid body connecting part.
More than form a static structure of the armored sludge discharge pipe of the utility model embodiment 3.
Armored sludge discharge pipe described in the present embodiment 3 be with operating environment and condition more severe, require that sludge drainage pipe has anti-storm, crash-resistant ability is strong, uninterrupted working time is long, have as rock, coral reef, ore etc. the purposes adjusting mud delivery pipeline direction during the solid material of sharp-edged as conveying for sea, is close with the wear-resisting property of metal composite sludge drainage pipe and matching used with it
When armored sludge discharge pipe described in the utility model is installed and used in input, described armored sludge discharge pipe model specification as required need be carried out the apolegamy of various parts, transport to production scene and assemble according to the structural requirement of product, the assembling of single sludge drainage pipe can be completed, require required armored sludge discharge pipe and metal composite sludge drainage pipe used to link into an integrated entity according to the conveying of mud delivery pipeline again, form the transfer line of a dredger.
Claims (10)
1. an armored sludge discharge pipe, comprises the flange plate at armouring body and body two ends, it is characterized in that described armouring body by managing in the taper of multiple armouring body, armouring body outer tube and being bolted connection forms; In described armouring body taper, pipe comprises a circle ring disk, to be extended in the taper of required sludge drainage pipe caliber manage by circle ring disk inner diameter end to side, inside its taper inner tube outlet end, a working surface is set, working surface parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube is a structure in flute profile rubber ring equipped mutually with the circle ring disk of pipe in the taper of armouring body.
2. an armored sludge discharge pipe, comprises the flange plate at armouring body and body two ends, it is characterized in that described armouring body by managing in multiple armouring conical tube, armouring body outer tube and being bolted connection forms; In described armouring body taper, pipe comprises a circle ring disk, to be extended in the taper of required sludge drainage pipe caliber manage by circle ring disk inner diameter end to side, inside its taper inner tube outlet end, a working surface is set, working surface parallels with armouring body center line, and its size is consistent with required sludge drainage pipe caliber; Described armouring body outer tube is a structure in flute profile rubber ring equipped mutually with the circle ring disk of pipe in the taper of armouring body; Establish two the semi-tubular dredge pipe buoys connected as one by bolt outside described armouring body outer tube, the outer surface of two semi-tubular dredge pipe buoys is provided with a stainless steel coating layer.
3. armored sludge discharge pipe according to claim 1 and 2, is characterized in that long degree≤armored pipes external length of tube 30-60 ㎜ of pipe in described armouring body, and is inserted into the inner side of adjacent armouring body entry end.
4. armored sludge discharge pipe according to claim 1 and 2, is characterized in that the flange plate at described armouring body two ends is entry end flange plate, outlet end flange dish; Entry end flange plate is grooved ring structure, is arranged on the entry end of armored pipes body unit; Outlet end flange dish is the grooved ring structure of cone table shape, and the outside of pipe in the armouring body taper that its entrance is sleeved on armouring body outlet end, outlet end is consistent with required sludge drainage pipe caliber.
5. armored sludge discharge pipe according to claim 1 and 2, is characterized in that the outlet end arranged outside of pipe in the taper of described armouring body is a spherical arc structure.
6. armored sludge discharge pipe according to claim 1 and 2, it is characterized in that the tapering of pipe in described armouring body taper is 1:5 ~ 10, the face width inside its outlet end is 40-80 ㎜.
7. armored sludge discharge pipe according to claim 2, it is characterized in that two described semi-tubular dredge pipe buoys are inner wall layer, the outer wall layer be made up of elastomeric layer, and be filled with foamed material layer in its closed cavity formed, be provided with a metal web frame layer connected as one in buoyancy aid body connecting part and buoyancy aid inner body wall layer.
8. armored sludge discharge pipe according to claim 7, it is characterized in that the structure of described metal web frame layer be buoyancy aid body connecting part is sheet metal overall structure, the metal web frame layer of inner wall layer is any one of frame structure, sheet metal overall structure or single Deformed Steel Bars structure.
9. armored sludge discharge pipe according to claim 7, is characterized in that described elastomeric layer is the combination of any one or wantonly two kinds in vulcanized rubber material layer, thermoplastic elastic material layer or urethane material.
10. armored sludge discharge pipe according to claim 7, is provided with 1-5 layer fabric reinforcement in the elastomeric layer that it is characterized in that described outer wall layer, buoyancy aid body connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094403.7U CN204592615U (en) | 2015-02-11 | 2015-02-11 | A kind of armored sludge discharge pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094403.7U CN204592615U (en) | 2015-02-11 | 2015-02-11 | A kind of armored sludge discharge pipe |
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| CN204592615U true CN204592615U (en) | 2015-08-26 |
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| CN201520094403.7U Expired - Fee Related CN204592615U (en) | 2015-02-11 | 2015-02-11 | A kind of armored sludge discharge pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633320A (en) * | 2015-02-11 | 2015-05-20 | 姜考成 | Armored sludge pipe design method and sludge pipe thereof |
| WO2017020606A1 (en) * | 2015-07-31 | 2017-02-09 | 姜考成 | Method of designing cladded mud dredging pipe and mud dredging pipe utilizing same |
| CN108980479A (en) * | 2018-10-18 | 2018-12-11 | 中交天津航道局有限公司 | Shrimp saves rubber tube |
-
2015
- 2015-02-11 CN CN201520094403.7U patent/CN204592615U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633320A (en) * | 2015-02-11 | 2015-05-20 | 姜考成 | Armored sludge pipe design method and sludge pipe thereof |
| WO2017020606A1 (en) * | 2015-07-31 | 2017-02-09 | 姜考成 | Method of designing cladded mud dredging pipe and mud dredging pipe utilizing same |
| CN108980479A (en) * | 2018-10-18 | 2018-12-11 | 中交天津航道局有限公司 | Shrimp saves rubber tube |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20180211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |