CN106385830A - Salt-discharging underground pipe containing filtering device and used for saline-alkali land - Google Patents

Salt-discharging underground pipe containing filtering device and used for saline-alkali land Download PDF

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Publication number
CN106385830A
CN106385830A CN201610754570.9A CN201610754570A CN106385830A CN 106385830 A CN106385830 A CN 106385830A CN 201610754570 A CN201610754570 A CN 201610754570A CN 106385830 A CN106385830 A CN 106385830A
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China
Prior art keywords
wall
hidden pipe
film layer
pipe
salt
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CN201610754570.9A
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Chinese (zh)
Inventor
王胜
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Shandong Sunway Garden Technology Co Ltd
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Shandong Sunway Garden Technology Co Ltd
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Priority to CN201610754570.9A priority Critical patent/CN106385830A/en
Publication of CN106385830A publication Critical patent/CN106385830A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B77/00Machines for lifting and treating soil

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Revetment (AREA)

Abstract

The invention discloses a salt-discharging underground pipe containing a filtering device and used for a saline-alkali land, belonging to the technical field of underground-pipe equipment used for the saline-alkali land. The salt-discharging underground pipe comprises underground pipes, wherein a connecting member is arranged between each two underground pipes which are connected through the connecting member; the outer wall of the right end of each underground pipe is provided with a non-return valve which is in sleeve connection with the outer wall of each underground pipe; the outer wall of each underground pipe is uniformly provided with water-permeable holes; the outer wall of each underground pipe is in uniform sleeve connection with reinforcing strips; the water-permeable holes are arranged between two reinforcing strips; and the outer wall of each reinforcing strip is in sleeve connection with a water-permeable film layer. According to the invention, the outer wall of each underground pipe is uniformly provided with the water-permeable holes, so saline-alkali water can enter the underground pipes; the outer wall of each underground pipe is in uniform sleeve connection with the reinforcing strips, so the underground pipes are increased in strength and are not easy to fracture under the pressure of underground earth; and the outer wall of each reinforcing strip is in sleeve connection with the water-permeable film layer, so the water-permeable film layer can block silt and sludge, and can permeate and filter out saline-alkali water.

Description

A kind of salt-soda soil salt discharge hidden pipe comprising defecator
Technical field
The present invention relates to salt-soda soil hidden pipe engineering device technique field, specially a kind of salt-soda soil salt discharge comprising defecator Hidden pipe.
Background technology
Nowadays urbanization rhythm is more and more faster, and many rural areas slowly also become city, however as urbanization step Quickening, the increasingly minimizing in arable land also slowly become a difficult problem, and the salt-soda soil in exploitation Coastal beach and inland is a good selection, China's cultivated area is limited, comprises very big varieties in saline-alkali areas, or these salt-soda soils are because salinity is idle, or yield greatly Low, economic benefit is bad, and existing improving technology is mainly in saline and alkaline provided underground hidden pipe, but the buried underground of hidden pipe is easily silted Mud blocks, and affects draining salt discharge efficiency, leads to ground drip washing to be infiltrated uneven, soil salinity leaching is uneven, water resource can not Recycling, wastes serious, and existing hidden pipe has poor, high cost of putting blockage effect, in-convenience in use, filter effect bad with A kind of salt-soda soil hidden pipe of combined type salt reduction of the problem of short life, such as Chinese Patent Application No. 201520304602.6 fills Put, including hidden pipe supervisor, hidden pipe looped pipeline, bright irrigation canals and ditches and Jiao Jing, described hidden pipe supervisor and hidden pipe looped pipeline are provided with along pipe to uniform The permeable hole of distribution, the permeable DeGrain of this kind of structure, resistance mud effect is also bad, and structure is not sufficiently stable, based on this, this Bright devise a kind of salt-soda soil salt discharge hidden pipe comprising defecator, to solve the above problems.
Content of the invention
It is an object of the invention to provide a kind of salt-soda soil salt discharge hidden pipe comprising defecator, to solve above-mentioned background skill China's cultivated area proposing in art is limited, comprises very big varieties in saline-alkali areas, or these salt-soda soils are because salinity is not busy greatly Put, or yielding poorly, economic benefit is bad, existing improving technology is mainly in saline and alkaline provided underground hidden pipe, but hidden pipe is buried Underground is easily choked up with silt, and affects draining salt discharge efficiency, leads to ground drip washing to be infiltrated uneven, and soil salinity leaching is uneven Even, water resource can not reuse, and wastes serious, and existing hidden pipe has poor, high cost of putting blockage effect, in-convenience in use Problem.
For achieving the above object, the present invention provides following technical scheme:A kind of salt-soda soil salt discharge comprising defecator is dark Pipe, including hidden pipe, described in two groups, the middle setting of hidden pipe has connector, and hidden pipe described in two groups is connected by connector, described dark The right-hand member outer wall of pipe is provided with non-return valve, and described non-return valve is socketed in the outer wall of hidden pipe, and the outer wall of described hidden pipe uniformly offers Permeable hole, the outer wall of described hidden pipe is uniformly socketed with stiffener, and described permeable hole is arranged between two groups of stiffeners, described reinforcement The outer wall of bar is socketed with permeable film layer, and the outer wall of described permeable film layer is socketed with drainage layer, and the outer wall of described drainage layer is socketed with Organic horizon, described connector includes upper sealing ring, and the top of described upper sealing ring is provided with pipeline garter spring, described upper pipeline The top of garter spring is provided with zinc-plated oxidation film layer, and the bottom of described upper sealing ring is arranged on the top of hidden pipe, described hidden pipe Bottom is provided with lower sealing ring, and the bottom of described lower sealing ring is provided with lower pipeline garter spring, and the bottom of described lower pipeline garter spring sets It is equipped with down zinc-plated oxidation film layer, the top left of described zinc-plated oxidation film layer and right-hand member are provided with cushion, described elasticity The top of pad is provided with pad, and the top of described pad is provided with clamp nut, and the inner chamber of described clamp nut is connected with fastening Bolt, described under the bottom left end of zinc-plated oxidation film layer and right-hand member be provided with spacer for bolt, described spacer for bolt is socketed in fastening The outer wall of bolt, described upper pipeline garter spring and lower pipeline garter spring are connected by fastening bolt.
Preferably, the top of hidden pipe described in two groups and bottom all open up fluted, and the inwall of described groove is provided with rubber Pad, the outer wall of described rubber blanket is provided with projection, and the outer wall of described projection is provided with Joining clasp, described connector be connected card It is provided with annular groove, the inwall of described annular groove is fitted with the outer wall of Joining clasp in the middle of the junction of ring.
Preferably, described non-return valve includes valve pocket, and described valve pocket is socketed in the outer wall of hidden pipe, the top setting of described valve pocket There is support base, the outer wall of described support base is plugged with pivot pin, and the left wall of described support base offers rotation slot, described rotation slot Inner chamber is plugged with rotating bar, and described rotating bar is connected with support base by pivot pin, and the bottom of described rotating bar is provided with and valve pocket The reverse stop valve matching.
Preferably, described hidden pipe be pvc pipe, described stiffener be reinforcing rod, described permeable film layer be geotextiles film layer or The permeable film layer of non-woven fabrics, described drainage layer is coarse sand granulosa, and described organic horizon is stalk layer.
Preferably, it is provided with steel wire drainage screen described in two groups between stiffener, and steel wire drainage screen is arranged on the outer of hidden pipe Wall.
Compared with prior art, the invention has the beneficial effects as follows:The present invention is uniformly offered permeable by the outer wall of hidden pipe Hole, makes saline-alkali water can enter hidden pipe, is uniformly socketed with stiffener by the outer wall of hidden pipe, increased the intensity of hidden pipe, on ground Do not allow easy fracture under the pressure of lower soil, permeable film layer is socketed with by the outer wall of stiffener, permeable film layer both can stop mud Husky mud can penetrate again and leach saline-alkali water, is socketed with drainage layer by the outer wall of permeable film layer, and drainage layer can stop mud Sand, preferably infiltration absorption saline-alkali water, the outer wall of logical filtered water level is socketed with organic horizon, and organic horizon can improve soil Environment, reduces saline and alkaline, by the setting of connector pipeline garter spring, so that two groups of hidden pipes can be entered by loading pipeline garter spring inner chamber Row fastening, Stability Analysis of Structures, zinc-plated oxidation film layer is provided with by the outer wall of pipeline garter spring, makes metallic conduit garter spring in saline-alkali environment In can be corrosion-resistant, by be provided with sealing ring between hidden pipe and pipeline garter spring it is ensured that saline-alkali water in hidden pipe will not reverse osmosis leakage Go out, cushion is provided with by the top left and right-hand member of upper zinc-plated oxidation film layer, cushion can be in fastening pipeline hoop Zinc-plated oxidation film layer is protected not to be damaged during ring, by the setting of clamp nut, pad, fastening bolt and spacer for bolt, firmly Hidden pipe is locked in connector, fluted, projection card on Joining clasp is all opened up by the top and bottom of two groups of hidden pipes Connect in a groove, hidden pipe is locked, so that hidden pipe can not be moved left and right, the inwall of groove is provided with rubber blanket, increased hidden pipe even Connect the sealing at place, be socketed in the outer wall of hidden pipe by the valve pocket of non-return valve, rotating bar is connected with support base by pivot pin, rotate The bottom of bar be provided with the reverse stop valve matching with valve pocket so that when surface water channel water level be higher than hidden pipe water level when, water Pressure makes reverse stop valve fit with valve pocket, and non-return valve is closed, and the water in surface water channel will not pour in down a chimney in hidden pipe.
Brief description
Fig. 1 is present configuration schematic diagram;
Fig. 2 is hidden pipe structural representation of the present invention;
Fig. 3 is connecting-piece structure schematic diagram of the present invention;
Fig. 4 is connector cross-sectional schematic of the present invention;
Fig. 5 is non-return valve structural representation of the present invention.
In figure:1 hidden pipe, 11 permeable holes, 12 stiffeners, 13 permeable film layers, 14 drainage layers, 15 organic horizons, 2 connectors, 211 lower sealing rings, 212 upper sealing rings, 213 times pipeline garter springs, pipeline garter spring on 214, zinc-plated oxidation film layer under 215, plate on 216 Zinc oxidation film layer, 217 cushions, 218 pads, 219 clamp nuts, 220 spacer for bolts, 221 fastening bolts, 222 annular grooves, 3 Non-return valve, 31 valve pockets, 32 support bases, 33 pivot pins, 34 rotation slots, 35 rotating bars, 36 reverse stop valves, 4 Joining clasps, 41 projections, 42 grooves, 43 rubber blankets.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-5, the present invention provides a kind of technical scheme:A kind of salt-soda soil salt discharge hidden pipe comprising defecator, Including hidden pipe 1, the middle setting of hidden pipe 1 described in two groups has connector 2, and hidden pipe 1 described in two groups is connected by connector 2, described The right-hand member outer wall of hidden pipe 1 is provided with non-return valve 3, and the inner chamber of described non-return valve 3 is socketed in the outer wall of hidden pipe 1, outside described hidden pipe 1 Wall uniformly offers permeable hole 11, and the outer wall of described hidden pipe 1 is uniformly socketed with stiffener 12, and described permeable hole 11 is arranged on two groups Between stiffener 12, the outer wall of described stiffener 12 is socketed with permeable film layer 13, and the outer wall of described permeable film layer 13 is socketed with filter Water layer 14, the outer wall of described drainage layer 14 is socketed with organic horizon 15, and described connector 2 includes upper sealing ring 212, described close The top of seal ring 212 is provided with pipeline garter spring 214, and the top of described upper pipeline garter spring 214 is provided with zinc-plated oxidation film layer 216, the bottom of described upper sealing ring 212 is arranged on the top of hidden pipe 1, and the bottom of described hidden pipe 1 is provided with lower sealing ring 211, The bottom of described lower sealing ring 211 is provided with lower pipeline garter spring 213, and the bottom of described lower pipeline garter spring 213 is provided with down zinc-plated Oxidation film layer 215, the top left of described zinc-plated oxidation film layer 216 and right-hand member are provided with cushion 217, described cushion 217 top is provided with pad 218, and the top of described pad 218 is provided with clamp nut 219, described clamp nut 219 interior Chamber is connected with fastening bolt 221, described under the bottom left end of zinc-plated oxidation film layer 215 and right-hand member be provided with spacer for bolt 220, institute State the outer wall that spacer for bolt 220 is socketed in fastening bolt 221, described upper pipeline garter spring 214 and lower pipeline garter spring 213 pass through fastening Bolt 221 connects.
Wherein, the top of hidden pipe 1 described in two groups and bottom all open up fluted 42, and the inwall of described groove 42 is provided with rubber Rubber cushion 43, the outer wall of described rubber blanket 43 is provided with projection 41, and the outer wall of described projection 41 is provided with Joining clasp 4, described company It is provided with annular groove 222, the inwall of described annular groove 222 and Joining clasp 4 in the middle of fitting 2 and the junction of Joining clasp 4 Outer wall laminating, the projection 41 on Joining clasp 4 is connected in groove 42, hidden pipe 1 is locked, and so that hidden pipe 1 can not be moved left and right, The inwall of groove 42 is provided with rubber blanket 43, increased the sealing of hidden pipe 1 junction, and described non-return valve 3 includes valve pocket 31, institute State the outer wall that valve pocket 31 is socketed in hidden pipe 1, the top of described valve pocket 31 is provided with support base 32, and the outer wall of described support base 32 is inserted It is connected to pivot pin 33, the left wall of described support base 32 offers rotation slot 34, and the inner chamber of described rotation slot 34 is plugged with rotating bar 35, Described rotating bar 35 is connected with support base 32 by pivot pin 33, and the bottom of described rotating bar 35 is provided with is matched with valve pocket 31 Reverse stop valve 36 is so that when the water level that the water level of surface water channel is higher than hidden pipe 1, hydraulic pressure makes reverse stop valve 36 paste with valve pocket 31 Close, non-return valve 3 is closed, and the water in surface water channel will not pour in down a chimney in hidden pipe 1, described hidden pipe 1 is pvc pipe, described stiffener 12 For reinforcing rod, described permeable film layer 13 is geotextiles film layer or the permeable film layer of non-woven fabrics, and described drainage layer 14 is coarse sand granulosa, institute Stating organic horizon 15 is stalk layer, effectively prevents mud from entering in hidden pipe 1 by multiple layered modes of hidden pipe 1, also has Permeability well, is provided with steel wire drainage screen, and steel wire drainage screen is arranged on the outer of hidden pipe 1 between stiffener 12 described in two groups Wall, steel wire drainage screen can prevent permeable film layer 13 from entering permeable hole 11 to permeable 13 1 supports of film layer.
Operation principle:The present invention penetrates into organic horizon 15 by saline-alkali water, and organic horizon 15 is stalk layer, and saline-alkali water enters again Enter drainage layer 14, drainage layer 14 is coarse sand granulosa, saline-alkali water enters back into permeable film layer 13, permeable film layer 13 be geotextiles film layer or The permeable film layer of non-woven fabrics, saline-alkali water enters permeable hole 11 by steel wire drainage screen again, enters hidden pipe 1 by permeable hole 11, passes through The setting of connector 2 pipeline garter spring, makes two groups of hidden pipes 1 can carry out by upper pipeline garter spring 214 and lower pipeline garter spring 213 inner chamber Fastening, is respectively arranged with upper zinc-plated oxidation film layer 216 and lower plating by the outer wall of upper pipeline garter spring 214 and lower pipeline garter spring 213 Zinc oxidation film layer 215, the pipeline garter spring making metal can be corrosion-resistant in saline-alkali environment, by between hidden pipe 1 and pipeline garter spring It is provided with upper sealing ring 212 and lower sealing ring 211 it is ensured that saline-alkali water will not reverse osmosis leak in hidden pipe 1, by upper zinc-plated oxygen Change the top left of film layer 216 and right-hand member is provided with cushion 217, cushion 217 being capable of the protection when fastening pipeline garter spring Upper zinc-plated oxidation film layer 216 is not damaged, by clamp nut 219, pad 218, fastening bolt 221 and spacer for bolt 220 Setting, firmly hidden pipe 1 is locked in connector 2, all opens up fluted 42 by the top and bottom of two groups of hidden pipes 1, connects Projection 41 on snap ring 4 is connected in groove 42, and hidden pipe 1 is locked, and so that hidden pipe 1 can not be moved left and right, the inwall of groove 42 sets It is equipped with rubber blanket 43, increased the sealing of hidden pipe 1 junction, be socketed in the outer wall of hidden pipe 1 by the valve pocket 31 of non-return valve 3, Rotating bar 35 is connected with support base 32 by pivot pin 33, and the bottom of rotating bar 35 is provided with the reverse stop valve matching with valve pocket 31 36, when the water level that the water level of surface water channel is higher than hidden pipe 1, hydraulic pressure makes reverse stop valve 36 fit with valve pocket 31, and non-return valve 3 closes Close.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention And modification, the scope of the present invention be defined by the appended.

Claims (5)

1. a kind of salt-soda soil salt discharge hidden pipe comprising defecator, including hidden pipe (1) it is characterised in that:Hidden pipe (1) described in two groups Middle setting have connector (2), hidden pipe (1) described in two groups pass through connector (2) connect, the right-hand member outer wall of described hidden pipe (1) It is provided with non-return valve (3), described non-return valve (3) is socketed in the outer wall of hidden pipe (1), the outer wall of described hidden pipe (1) uniformly offers Permeable hole (11), the outer wall of described hidden pipe (1) is uniformly socketed with stiffener (12), and described permeable hole (11) is arranged on two groups of reinforcements Between bar (12), the outer wall of described stiffener (12) is socketed with permeable film layer (13), the outer wall socket of described permeable film layer (13) There is drainage layer (14), the outer wall of described drainage layer (14) is socketed with organic horizon (15), and described connector (2) includes upper sealing ring (212), the top of described upper sealing ring (212) is provided with pipeline garter spring (214), the top of described upper pipeline garter spring (214) It is provided with zinc-plated oxidation film layer (216), the bottom of described upper sealing ring (212) is arranged on the top of hidden pipe (1), described hidden pipe (1) bottom is provided with lower sealing ring (211), and the bottom of described lower sealing ring (211) is provided with lower pipeline garter spring (213), institute The bottom stating lower pipeline garter spring (213) is provided with down zinc-plated oxidation film layer (215), the top of described zinc-plated oxidation film layer (216) Portion's left end and right-hand member are provided with cushion (217), and the top of described cushion (217) is provided with pad (218), described pad (218) top is provided with clamp nut (219), and the inner chamber of described clamp nut (219) is connected with fastening bolt (221), institute State down the bottom left end of zinc-plated oxidation film layer (215) and right-hand member is provided with spacer for bolt (220), described spacer for bolt (220) set It is connected on the outer wall of fastening bolt (221), described upper pipeline garter spring (214) and lower pipeline garter spring (213) pass through fastening bolt (221) Connect.
2. a kind of salt-soda soil salt discharge hidden pipe comprising defecator according to claim 1 it is characterised in that:Described in two groups The top of hidden pipe (1) and bottom all open up fluted (42), and the inwall of described groove (42) is provided with rubber blanket (43), described rubber The outer wall of rubber cushion (43) is provided with projection (41), and the outer wall of described projection (41) is provided with Joining clasp (4), described connector (2) be provided with annular groove (222) with the middle of the junction of Joining clasp (4), the inwall of described annular groove (222) be connected card The outer wall laminating of ring (4).
3. a kind of salt-soda soil salt discharge hidden pipe comprising defecator according to claim 1 it is characterised in that:Described check Valve (3) includes valve pocket (31), and described valve pocket (31) is socketed in the outer wall of hidden pipe (1), and the top of described valve pocket (31) is provided with props up Support seat (32), the outer wall of described support base (32) is plugged with pivot pin (33), and the left wall of described support base (32) offers rotation slot (34), the inner chamber of described rotation slot (34) is plugged with rotating bar (35), and described rotating bar (35) passes through pivot pin (33) and support base (32) connect, the bottom of described rotating bar (35) is provided with the reverse stop valve (36) matching with valve pocket (31).
4. a kind of salt-soda soil salt discharge hidden pipe comprising defecator according to claim 1 it is characterised in that:Described hidden pipe (1) it is pvc pipe, described stiffener (12) is reinforcing rod, described permeable film layer (13) is geotextiles film layer or non-woven fabrics water permeable membrane Layer, described drainage layer (14) is coarse sand granulosa, and described organic horizon (15) is stalk layer.
5. a kind of salt-soda soil salt discharge hidden pipe comprising defecator according to claim 1 it is characterised in that:Described in two groups It is provided with steel wire drainage screen between stiffener (12), and steel wire drainage screen is arranged on the outer wall of hidden pipe (1).
CN201610754570.9A 2016-08-29 2016-08-29 Salt-discharging underground pipe containing filtering device and used for saline-alkali land Pending CN106385830A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110100518A (en) * 2019-05-25 2019-08-09 天津市海岸盐碱地生态绿化工程有限公司 A kind of comprehensive improving method for coastal saline soil
CN113207345A (en) * 2021-05-18 2021-08-06 中国科学院东北地理与农业生态研究所 Saline-alkali soil improvement method for salt discharge by covering sand pipes
CN116349444A (en) * 2023-04-23 2023-06-30 江苏沿海生态科技发展有限公司 Saline and alkaline land buried pipe device for high-standard farmland irrigation and drainage

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US6302621B1 (en) * 1997-08-13 2001-10-16 Obayashi Corporation Segment for intake tunnels
CN203743663U (en) * 2014-02-25 2014-07-30 杭州中艺园林工程有限公司 Easily-assembled salt elimination pipe assembly for saline-alkali soil
CN203735022U (en) * 2014-02-25 2014-07-30 杭州中艺园林工程有限公司 Salt elimination pipeline system for improving soil
CN104930273A (en) * 2004-05-14 2015-09-23 维克托里克公司 Deformable mechanical pipe coupling
CN204741720U (en) * 2015-06-30 2015-11-11 潍坊友容实业有限公司 Saline and alkaline land is with combination hidden pipe
CN204968401U (en) * 2015-06-12 2016-01-20 潍坊友容实业有限公司 Saline and alkaline hidden pipe is arranged in saline and alkaline land

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6302621B1 (en) * 1997-08-13 2001-10-16 Obayashi Corporation Segment for intake tunnels
CN104930273A (en) * 2004-05-14 2015-09-23 维克托里克公司 Deformable mechanical pipe coupling
CN203743663U (en) * 2014-02-25 2014-07-30 杭州中艺园林工程有限公司 Easily-assembled salt elimination pipe assembly for saline-alkali soil
CN203735022U (en) * 2014-02-25 2014-07-30 杭州中艺园林工程有限公司 Salt elimination pipeline system for improving soil
CN204968401U (en) * 2015-06-12 2016-01-20 潍坊友容实业有限公司 Saline and alkaline hidden pipe is arranged in saline and alkaline land
CN204741720U (en) * 2015-06-30 2015-11-11 潍坊友容实业有限公司 Saline and alkaline land is with combination hidden pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110100518A (en) * 2019-05-25 2019-08-09 天津市海岸盐碱地生态绿化工程有限公司 A kind of comprehensive improving method for coastal saline soil
CN110100518B (en) * 2019-05-25 2022-03-18 天津泰达园林建设有限公司 Comprehensive improvement method for seashore saline soil
CN113207345A (en) * 2021-05-18 2021-08-06 中国科学院东北地理与农业生态研究所 Saline-alkali soil improvement method for salt discharge by covering sand pipes
CN116349444A (en) * 2023-04-23 2023-06-30 江苏沿海生态科技发展有限公司 Saline and alkaline land buried pipe device for high-standard farmland irrigation and drainage
CN116349444B (en) * 2023-04-23 2023-10-31 江苏沿海生态科技发展有限公司 Saline and alkaline land buried pipe device for high-standard farmland irrigation and drainage

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