CN109914569B - Cement water delivery pipe - Google Patents
Cement water delivery pipe Download PDFInfo
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- CN109914569B CN109914569B CN201910238793.3A CN201910238793A CN109914569B CN 109914569 B CN109914569 B CN 109914569B CN 201910238793 A CN201910238793 A CN 201910238793A CN 109914569 B CN109914569 B CN 109914569B
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- pipe
- assembly groove
- sealing ring
- pouring
- assembly
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- 239000004568 cement Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 117
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 19
- 239000004570 mortar (masonry) Substances 0.000 description 16
- 230000006872 improvement Effects 0.000 description 9
- 238000010030 laminating Methods 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Abstract
The invention relates to a cement water delivery pipe, which comprises a fitting pipe, a pipe body and a pipe pillow; the sealing mechanism is embedded into the outer wall of the pipe body and used for sealing the connecting gap of the assembly pipe and the pipe body; the outer wall of the assembly pipe is provided with a plurality of pouring holes, the pouring holes are used for pouring filling materials into the connecting gaps of the assembly pipe and the pipe body, and the filling materials are tightly connected with the sealing mechanism. The cement water delivery pipe can reduce the weight of the assembly pipe through the plurality of pouring holes, so that the assembly pipe is more convenient and labor-saving in moving; the pouring holes can enable the filling material to be accurately discharged to the joint gap of the assembly pipe and the pipe body, and the filling material can penetrate into the inner layer of the joint to form a plurality of waterproof barriers, so that the joint sealing effect is improved; the filler can be used as a connecting seat of the rubber sealing ring, so that the fixing stability of the rubber sealing ring is ensured, and the dislocation of the rubber sealing ring is avoided.
Description
Technical Field
The invention relates to a cement water delivery pipe, and belongs to the technical field of cement prefabricated part production.
Background
In municipal construction, a plurality of prefabricated cement water pipes are assembled together to form a finished underground transportation pipeline system.
The existing conveying pipe mostly consists of a mounting pipe and a conveying pipe, the conveying pipe is plugged into the mounting pipe during assembly, and then the joint is plugged by a rubber ring and then filled with cement mortar for sealing; but outside that junction was located to this kind of seal structure, can't seal the deep of junction, and sealed effect is not enough to seal structure directly leaks in the outside, appears the crack easily, and the life-span is limited.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a cement water delivery pipe, which has the following specific technical scheme:
a cement water delivery pipe, which comprises a fitting pipe, a pipe body and a pipe pillow; the sealing mechanism is embedded into the outer wall of the pipe body and used for sealing the connecting gap of the assembly pipe and the pipe body; the outer wall of the assembly pipe is provided with a plurality of pouring holes, the pouring holes are used for pouring filling materials into the connecting gaps of the assembly pipe and the pipe body, and the filling materials are tightly connected with the sealing mechanism.
As an improvement of the technical scheme, the pouring holes are distributed in an annular array to form a circle of pouring rings, and three pouring rings are equidistantly arranged.
As the improvement of above-mentioned technical scheme, the inner wall of assembly pipe is equipped with the fitting surface, the fitting surface includes first cooperation inclined plane, cooperation plane and second cooperation inclined plane, the second cooperation inclined plane the cooperation plane reaches first cooperation inclined plane is by outside-in seamless connection, first cooperation inclined plane the inclined plane part of second cooperation inclined plane all is towards the outside of assembly pipe, the second cooperation inclined plane is located cooperation planar top, first cooperation inclined plane is located cooperation planar bottom, pour the bottom exit of hole all to be located cooperation plane department.
As the improvement of above-mentioned technical scheme, the tip outer wall of body is spaced apart and is had annular first assembly groove and second assembly groove, first assembly groove is located the outside in second assembly groove, sealing mechanism includes first rubber seal and second rubber seal, first rubber seal's bottom surface imbed in the inside in first assembly groove, first rubber seal's top surface with first cooperation inclined plane laminating, second rubber seal cup joints in the inside in second assembly groove, second rubber seal's top surface with the laminating of second cooperation inclined plane.
As an improvement of the technical scheme, a first pouring sealing section is arranged in the area between the first assembly groove and the second assembly groove, the first pouring sealing section is relatively positioned at the bottom of the matching plane, and the first pouring sealing section is communicated with the pouring hole.
As an improvement of the technical scheme, the sections of the first rubber sealing ring and the second rubber sealing ring are of right trapezoid structures, and the tops of the first rubber sealing ring and the second rubber sealing ring are of inclined planes.
As an improvement of the technical scheme, the inner wall of the assembly pipe is of a plane structure.
As the improvement of the technical scheme, the outer wall of the end part of the pipe body is provided with a third assembly groove, the section width of the third assembly groove is larger than the outlet distribution width of the pouring hole, the sealing mechanism comprises a third rubber sealing ring, the bottom of the third rubber sealing ring is embedded into the third assembly groove, the outer wall of the third rubber sealing ring is provided with a plurality of annular pouring grooves, and each pouring groove is provided with one pouring ring relatively.
As the improvement of the technical scheme, the outer wall of the end part of the pipe body is provided with the annular fourth assembly groove and the fifth assembly groove, the fifth assembly groove is positioned at the inner side of the fourth assembly groove, the fourth assembly groove and the fifth assembly groove are oppositely positioned between the adjacent pouring rings, the sealing mechanism comprises a fourth rubber sealing ring and a fifth rubber sealing ring, the bottom of the fourth rubber sealing ring is embedded into the fourth assembly groove, and the bottom of the fifth rubber sealing ring is embedded into the fifth assembly groove.
As an improvement of the above technical scheme, a third casting sealing section is formed between the fourth assembly groove and the fifth assembly groove, a second casting sealing section is formed on the other side of the fourth assembly groove, which is away from the fifth assembly groove, and a fourth casting sealing section is formed on the other side of the fifth assembly groove, which is away from the fourth assembly groove, and the second casting sealing section, the third casting sealing section and the fourth casting sealing section are all communicated with the casting hole.
The invention has the beneficial effects that:
(1) The weight of the assembling pipe can be reduced through the plurality of pouring holes, so that the assembling pipe is more convenient and labor-saving in moving;
(2) The pouring holes can enable the filling material to be accurately discharged to the joint gap of the assembly pipe and the pipe body, can penetrate into the inner layer of the joint, and is matched with the rubber sealing ring to form a plurality of waterproof barriers, so that the joint sealing effect is improved;
(3) The filler can be used as a connecting seat of the rubber sealing ring, so that the fixing stability of the rubber sealing ring is ensured, and the dislocation of the rubber sealing ring is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall connection structure of a cement water pipe according to the present invention;
FIG. 2 is a schematic cross-sectional view of a first embodiment of a fitting tube and body connection according to the present invention;
FIG. 3 is a schematic cross-sectional view of the fitting tube shown in FIG. 2;
FIG. 4 is a schematic cross-sectional view of a second embodiment of a fitting tube and body connection according to the present invention;
FIG. 5 is a schematic cross-sectional view of a third embodiment of a fitting tube and body connection according to the present invention.
Reference numerals: 1. the assembly pipe, 11, the pouring hole, 12, the assembly surface, 121, the first matching inclined surface, 122, the matching plane, 123, the second matching inclined surface, 2, the pipe body, 21, the first assembly groove, 22, the second assembly groove, 23, the third assembly groove, 24, the fourth assembly groove, 25, the fifth assembly groove, 3, the pipe pillow, 4, the sealing mechanism, 411, the first rubber sealing ring, 412, the second rubber sealing ring, 421, the third rubber sealing ring, 4211, the pouring groove, 431, the fourth rubber sealing ring, 432, the fifth rubber sealing ring, 5, the first pouring sealing section, 6, the second pouring sealing section, 7, the third pouring sealing section, 8 and the fourth pouring sealing section.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, fig. 1 is a schematic diagram of an overall connection structure of a cement water pipe according to the present invention;
when two cement water delivery pipes are connected, the assembly pipe 1 of the former is required to be connected with the pipe body 2 of the latter, so that the assembly of different water delivery pipes is realized, and the bottom of each water delivery pipe is provided with a pipe pillow 3 for supporting the pipe body 2;
the outer wall of the assembly pipe 1 is provided with casting holes 11, the casting holes 11 are distributed in a ring-shaped array, one ring of casting holes 11 is a casting ring, and three casting rings are transversely and equidistantly arranged; the weight of the assembly pipe 1 can be reduced through the plurality of pouring holes 11, so that the assembly pipe 1 is more convenient and labor-saving in moving, each pouring hole 11 is also a filling channel of filling materials, after the assembly is finished, the filling materials can be filled into the pouring holes 11 and then dispersed to the connection gap between the assembly pipe 1 and the pipe body 2, and meanwhile, the filling materials can also fill the pouring holes 11, so that the connection gap is eliminated, and the strength of the assembly pipe 1 is also enhanced; exemplary fillers are cement mortars;
referring to fig. 2 and 3, fig. 2 is a schematic cross-sectional structure of a first embodiment of the connection between an assembly pipe and a pipe body according to the present invention; FIG. 3 is a schematic cross-sectional view of the fitting tube shown in FIG. 2;
the section of the assembly pipe 1 is provided with three pouring holes 11 which are arranged at equal intervals, the inner wall of the assembly pipe 1 is an assembly surface 12, the assembly surface 12 comprises a first matching inclined surface 121, a matching plane 122 and a second matching inclined surface 123, the first matching inclined surface 121, the matching plane 122 and the second matching inclined surface 123 are distributed in a step shape, the first matching inclined surface 121, the matching plane 122 and the second matching inclined surface 123 are sequentially distributed from inside to outside, the second matching inclined surface 123 is positioned at the top of the matching plane 122, the first matching inclined surface 121 is positioned at the bottom of the matching plane 122, the inclined surface parts of the first matching inclined surface 121 and the second matching inclined surface 123 are all open towards the outer end, the inclined surface is 45 degrees, and the outlet ends of the pouring holes 11 are positioned on the matching plane 122;
the outer wall of the pipe body 2 is provided with a first assembling groove 21 and a second assembling groove 22 at intervals, a first pouring sealing interval 5 is arranged in a region between the first assembling groove 21 and the second assembling groove 22, the first assembling groove 21 and the second assembling groove 22 are annular, the first assembling groove 21 is positioned at the outer end of the second assembling groove 22, the first assembling groove 21 is positioned at the bottom of the first matching inclined surface 121 relatively, and the second assembling groove 22 is positioned at the bottom of the second matching inclined surface 123 relatively;
the sealing mechanism 4 comprises a first rubber sealing ring 411 and a second rubber sealing ring 412, wherein the bottom of the first rubber sealing ring 411 is embedded in the first assembling groove 21, the top of the first rubber sealing ring 411 is attached to the first assembling inclined surface 121, the bottom of the second rubber sealing ring 412 is embedded in the second assembling groove 22, and the top of the second rubber sealing ring 412 is attached to the second assembling inclined surface 123; through the laminating contact of rubber seal and inclined plane, can form both ends shutoff structure, improve waterproof performance, the cross-section of first rubber seal 411 and second rubber seal 412 is right trapezoid, and trapezoidal inclined plane all is laminated with the cooperation inclined plane, and inclined plane structure can make more convenient when stretching into, and the laminating is inseparabler after the rubber circle is extruded;
when in assembly, the first rubber sealing ring 411 is sleeved on the first assembly groove 21, and the second rubber sealing ring 412 is sleeved on the second assembly groove 22;
the end part of the pipe body 2 is inserted into the assembly pipe 1, in the inserting process, the first rubber sealing ring 411 firstly enters the position of the matching plane 122 through the second matching inclined plane 123, the diameter of the first rubber sealing ring 411 is 1mm larger than that of the matching plane 122, when the first rubber sealing ring 411 enters the matching plane 122, the matching plane 122 can inwards press the first rubber sealing ring 411, then the pipe body 2 is continuously pushed forward, the first rubber sealing ring 411 can stop when being moved to be attached to the first matching inclined plane 121, and meanwhile, the second rubber sealing ring 412 is attached to the second matching inclined plane 123, the diameter of the second rubber sealing ring 412 is 1mm larger than that of the second matching inclined plane 123, the second rubber sealing ring 412 can be inwards pressed by the second matching inclined plane 123, the connection tightness is improved, and the two-end sealing and seamless connection are realized;
the worker fills the concrete mortar into each pouring hole 11, the mortar enters the first pouring sealing section 5 along the pouring holes 11, so that gaps at the positions are filled, the mortar in the first pouring sealing section 5 is also connected with the rubber sealing rings at the two sides into a whole to form three waterproof barriers, an effective waterproof sealing structure can be formed, the mortar can also serve as a connecting seat of the rubber ring, the fixing stability of the rubber ring is ensured, dislocation of the rubber ring is avoided, the concrete mortar is filled into each pouring hole 11, so that the mortar flows into the connecting part more accurately and deeply, the connecting sealing effect is improved, and the operation is simple; and finally, each pouring hole 11 is plugged by using concrete mortar, so that the assembly pipe 1 can form a complete structure, and the strength is improved.
FIG. 4 is a schematic cross-sectional view of a second embodiment of the fitting tube and tube connection of the present invention, as shown in FIG. 4;
the inner wall of the assembly pipe 1 is of a plane structure, the outer wall of the pipe body 2 is provided with a ring-shaped third assembly groove 23, and the width of the third assembly groove 23 is larger than the distribution width of the pouring holes 11;
the sealing mechanism 4 comprises a third rubber sealing ring 421, the third rubber sealing ring 421 is sleeved on the outer wall of the third assembly groove 23, the outer wall of the third rubber sealing ring 421 is tightly attached to the inner wall of the assembly pipe 1, three annular pouring grooves 4211 are formed in the outer wall of the third rubber sealing ring 421, and one pouring ring is arranged at the top of each pouring groove 4211;
when the pipe body is installed, the third rubber sealing ring 421 is sleeved outside the third assembling groove 23, the pipe body 2 is inserted into the assembling pipe 1, the diameter of the third rubber sealing ring 421 is 1mm larger than the inner diameter of the assembling pipe 1, when the pipe body is inserted, the third rubber sealing ring 421 can be extruded by the assembling pipe 1, and when the pipe body 2 is completely inserted, the pouring grooves 4211 are aligned with the pouring rings one by one;
the worker fills the concrete mortar into each pouring hole 11, the concrete mortar flows into the corresponding pouring groove 4211 through the pouring holes 11 to form a filling pouring groove 421, the concrete mortar can be fully contacted and adhered with the third rubber sealing ring 421, the fixing strength of the third rubber sealing ring 421 is improved, and the formed mortar structure can form three barriers at the periphery of the third rubber sealing ring 421, so that the waterproof effect is improved; the casting holes are then sealed again so that the fitting tube 1 can be formed into a complete structure.
FIG. 5 is a schematic cross-sectional view of a third embodiment of the fitting tube and tube body connection according to the present invention;
the outer wall of the pipe body 2 is provided with a ring-shaped fourth assembly groove 24 and a fifth assembly groove 25, the fourth assembly groove 24 is positioned outside the fifth assembly groove 25, the fourth assembly groove 24 is positioned between the two casting rings at the middle part and the right part, the fifth assembly groove 25 is positioned between the two casting rings at the middle part and the left part, the middle casting ring is arranged between the fourth assembly groove 24 and the fifth assembly groove 25, the area between the fourth assembly groove 24 and the fifth assembly groove 25 is a third casting sealing interval 7, the right side of the fourth assembly groove 24 is a second casting sealing interval 6, and the left side of the fifth assembly groove 25 is a third casting sealing interval 8;
the sealing mechanism 4 comprises a fourth rubber sealing ring 431 and a fifth rubber sealing ring 432;
during installation, the fourth rubber sealing ring 431 and the fifth rubber sealing ring 432 are respectively sleeved in the fourth assembly groove 24 and the fifth assembly groove 25; the pipe body 2 is plugged into the assembly pipe 1, and when the fourth assembly groove 24 is positioned between the two pouring rings at the middle part and the right part, the fifth assembly groove 25 is positioned between the two pouring rings at the middle part and the left part, and the movement is stopped;
the workman pours into concrete mortar from pouring hole 11, and concrete mortar flows into through pouring hole 11 in second pouring seal section 6, third pouring seal section 7 and fourth pouring seal section 8, and the mortar flows into second pouring seal section 6 departments from the pouring ring on right side, and the mortar flows into third pouring seal section 7 from the pouring ring in middle part, and the mortar flows into fourth pouring seal section 8 from the pouring ring on left side to realize the shutoff to seal section, fourth rubber seal 431, fifth rubber seal 432 and each pouring seal section can jointly form 5 way barriers.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. A cement water delivery pipe, which comprises a fitting pipe (1), a pipe body (2) and a pipe pillow (3); the method is characterized in that: the sealing mechanism (4) is embedded into the outer wall of the pipe body (2), and the sealing mechanism (4) is used for sealing a connecting gap between the assembly pipe (1) and the pipe body (2);
the outer wall of the assembly pipe (1) is provided with a plurality of pouring holes (11), the pouring holes (11) are used for pouring filling materials into the connecting gaps of the assembly pipe (1) and the pipe body (2), and the filling materials are tightly connected with the sealing mechanism (4);
the pouring holes (11) are distributed in an annular array to form a circle of pouring rings, and three pouring rings are equidistantly arranged;
the inner wall of the assembly pipe (1) is provided with an assembly surface (12), the assembly surface (12) comprises a first matching inclined surface (121), a matching plane (122) and a second matching inclined surface (123), the matching plane (122) and the first matching inclined surface (121) are connected from outside to inside in a seamless manner, inclined surface parts of the first matching inclined surface (121) and the second matching inclined surface (123) face to an external opening of the assembly pipe (1), the second matching inclined surface (123) is positioned at the top of the matching plane (122), the first matching inclined surface (121) is positioned at the bottom of the matching plane (122), and bottom end outlets of the pouring holes (11) are all arranged at the matching plane (122);
the outer wall of the end part of the pipe body (2) is provided with a first annular assembly groove (21) and a second annular assembly groove (22) at intervals, the first assembly groove (21) is positioned outside the second assembly groove (22), the sealing mechanism (4) comprises a first rubber sealing ring (411) and a second rubber sealing ring (412), the bottom surface of the first rubber sealing ring (411) is embedded into the first assembly groove (21), the top surface of the first rubber sealing ring (411) is attached to the first matching inclined surface (121), the second rubber sealing ring (412) is sheathed in the second assembly groove (22), and the top surface of the second rubber sealing ring (412) is attached to the second matching inclined surface (123);
the inner wall of the assembly pipe (1) is of a plane structure;
the end outer wall of the pipe body (2) is provided with a third assembly groove (23), the section width of the third assembly groove (23) is larger than the outlet distribution width of the pouring hole (11), the sealing mechanism (4) comprises a third rubber sealing ring (421), the bottom of the third rubber sealing ring (421) is embedded into the third assembly groove (23), the outer wall of the third rubber sealing ring (421) is provided with a plurality of annular pouring grooves (4211), and each pouring groove (4211) is provided with one pouring ring relatively.
2. A cement delivery pipe according to claim 1, wherein: the area between first assembly groove (21) and second assembly groove (22) is first pouring seal interval (6), first pouring seal interval (6) are located relatively the bottom of cooperation plane (122), first pouring seal interval (6) with pour hole (11) intercommunication.
3. A cement delivery pipe according to claim 2, wherein: the cross sections of the first rubber sealing ring (411) and the second rubber sealing ring (412) are of right trapezoid structures, and the tops of the first rubber sealing ring (411) and the second rubber sealing ring (412) are of inclined planes.
4. A cement delivery pipe according to claim 1, wherein: the end outer wall of the pipe body (2) is provided with a fourth annular assembly groove (24) and a fifth annular assembly groove (25), the fifth annular assembly groove (25) is located at the inner side of the fourth annular assembly groove (24), the fourth annular assembly groove (24) and the fifth annular assembly groove (25) are located between the pouring rings oppositely, the sealing mechanism (4) comprises a fourth rubber sealing ring (431) and a fifth rubber sealing ring (432), the bottom of the fourth rubber sealing ring (431) is embedded into the inner portion of the fourth annular assembly groove (24), and the bottom of the fifth rubber sealing ring (432) is embedded into the inner portion of the fifth annular assembly groove (25).
5. A cement delivery pipe according to claim 4, wherein: the sealing section (7) is poured for the third between fourth assembly groove (24) and fifth assembly groove (25), the opposite side that fourth assembly groove (24) deviates from fifth assembly groove (25) is sealed section (6) is poured for the second, the opposite side that fifth assembly groove (25) deviates from fourth assembly groove (24) is sealed section (8) is poured for the fourth, sealed section (6) is poured for the second, sealed section (7) is poured for the third and sealed section (8) are all pour with pour hole (11) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238793.3A CN109914569B (en) | 2019-03-27 | 2019-03-27 | Cement water delivery pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238793.3A CN109914569B (en) | 2019-03-27 | 2019-03-27 | Cement water delivery pipe |
Publications (2)
| Publication Number | Publication Date |
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| CN109914569A CN109914569A (en) | 2019-06-21 |
| CN109914569B true CN109914569B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910238793.3A Active CN109914569B (en) | 2019-03-27 | 2019-03-27 | Cement water delivery pipe |
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| CN (1) | CN109914569B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116255512A (en) * | 2023-03-09 | 2023-06-13 | 浙江巨龙管业科技有限公司 | Sealing connection convenient prestress steel cylinder concrete pipe and mud pouring die |
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| CN108824595A (en) * | 2018-06-15 | 2018-11-16 | 禹州源衡水处理有限公司 | Plant area of sewage treatment plant underground piping attachment device |
| CN208381517U (en) * | 2018-06-30 | 2019-01-15 | 禹州市国泰建工科技有限公司 | A kind of regeneration concrete conveyance conduit |
| CN210395577U (en) * | 2019-03-27 | 2020-04-24 | 宣城市政建设集团有限公司 | Cement water delivery pipe |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1173831A (en) * | 1956-05-12 | 1959-03-03 | Device for sealing and casting a sealing material in sleeve connections between tubes, in particular between tubes of ceramic materials | |
| FR1187356A (en) * | 1957-11-29 | 1959-09-10 | Fachverband Steinzeugind | Process for making prefabricated joints for interlocking conduits using mouldable masses, in particular for sewer pipes |
| CN2135095Y (en) * | 1992-07-04 | 1993-06-02 | 聂又安 | Cement pipe joint with y-shaped rubber sealing ring |
| JPH10229627A (en) * | 1996-12-12 | 1998-08-25 | Chiba Yogyo Kk | Highly watertight wire joint tunnel |
| JP2007064342A (en) * | 2005-08-31 | 2007-03-15 | Maruei Concrete Industries Co Ltd | Joint for concrete pipe body |
| CN1920364A (en) * | 2006-08-28 | 2007-02-28 | 阎金波 | Thin wall stainless steel pipe glue injection type seamless socket connection method |
| CN205065169U (en) * | 2015-10-10 | 2016-03-02 | 贵州开磷集团股份有限公司 | Flange leaking stoppage fixture |
| CN206090779U (en) * | 2016-09-26 | 2017-04-12 | 周立辉 | Municipal administration water supply and drainage pipeline connection structure |
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| CN210395577U (en) * | 2019-03-27 | 2020-04-24 | 宣城市政建设集团有限公司 | Cement water delivery pipe |
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| Publication number | Publication date |
|---|---|
| CN109914569A (en) | 2019-06-21 |
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