CN1563986A - Appts. for setting up indoor water soil conservation model - Google Patents
Appts. for setting up indoor water soil conservation model Download PDFInfo
- Publication number
- CN1563986A CN1563986A CN 200410029760 CN200410029760A CN1563986A CN 1563986 A CN1563986 A CN 1563986A CN 200410029760 CN200410029760 CN 200410029760 CN 200410029760 A CN200410029760 A CN 200410029760A CN 1563986 A CN1563986 A CN 1563986A
- Authority
- CN
- China
- Prior art keywords
- model
- places
- rain controller
- charge
- person
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000002689 soil Substances 0.000 title claims description 13
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000004088 simulation Methods 0.000 description 16
- 239000013049 sediment Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- 238000005070 sampling Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000004162 soil erosion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011509 cement plaster Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
In the invention, rainfall unit, canopy and low step face model are position at upper, middle and lower parts of bracket. Rainfall unit includes main pipe connected to water inlet pipe and branch pipes, and discharge pipe is in side opposite to the main pipe. Low step face model includes slope face, sidewall, movable lateral clapboard and movable back clapboard. Four sidewalls in model are sidewall, front wall, movable lateral clapboard and movable back clapboard. The invention includes sampler, curb and runoff bucket are arranged at proper position. Main pipe and branch pipes are made from PVC. Raininess is even. The invented equipment is suitable to indoor model test for larger area. The equipment is easy to be installed.
Description
Technical field
The present invention relates to a kind of device that is used to set up indoor water and soil conservation model, belong to the agricultural water conservancy technical field.
Background technology
Fig. 1 is existing a kind of indoor water and soil conservation test unit, 1 is the rainfall simulation device among the figure, the 2nd, the underlying surface model, referring to " The effect of soil air entrapment on soil erosion during simulatedrainfall; Transactions of the ASAE; 1985,28 volumes, 1598-1601 page or leaf.The shortcoming of this rain controller is that effective spray area is very little, can't finish the bigger rainfall simulation model test of yardstick, and as shown in FIG., underlying surface model projection area has only 0.67m * 0.4m.
In indoor proportional model test, rain factor can only adopt manual simulation's method to solve.The rainfall simulation device of the test of water and soil conservation at present usefulness is divided into two kinds of citation forms: (1) raindrop spray from shower nozzle with starting velocity, as shower nozzle following spray and lateral spray type rainfall simulation device; (2) raindrop do not have the initial velocity drippage, as vertical line formula and syringe needle upper-spraying type rainfall simulation device etc.
The Conic nozzle following spray rainfall simulation device of existing single shower nozzle, referring to " Small Watershed of Loess Plateau Erosion and Sediment Production process and simulation ", Science Press, 1998, the 218-217 pages or leaves, its structure is as shown in Figure 2,3 is Conic nozzles among the figure, the 4th, support, this is the simplest rainfall simulation facility of a kind of structure, its most basic member is feed pipe and Conic nozzle.The uniformity coefficient of the type rainfall is not very desirable; Along with the variation of raininess, the spraying range of single shower nozzle has bigger variation in addition.Improve uniformity coefficient if load onto micro motor at the shower nozzle root with the rotation that realizes shower nozzle, then cost will improve again greatly.
Summary of the invention
The objective of the invention is to propose a kind of device that applies to indoor water and soil conservation model,, observe the inferior rainfall of the small watershed scale model of multiple yardstick produce husky and runoff yield situation, and measure the husky concentration of instantaneous product of small watershed model by this test unit.
The device that is used to set up indoor water and soil conservation model that the present invention proposes comprises rain controller, waterproof awning, underlying surface model, sampler and runoff bucket; Described rain controller places the top of support, and waterproof awning places the middle part of support, and the underlying surface model places the bottom of support; Described rain controller is made up of the person in charge and arm, is responsible for to be square, and many arms are parallel among the person in charge, and the person in charge and arm are interconnected, and the person in charge's a side is provided with water inlet pipe, and relative opposite side is provided with blow-off pipe; That described underlying surface model comprises is domatic, abutment wall, removable side dividing plate and removable rear bulkhead, and domatic is the bottom of model, and four sides of model are respectively side wall, removable rear bulkhead, removable side dividing plate and preceding abutment wall; Described sampler places a side of the preceding abutment wall of model, and the below of preceding abutment wall is provided with curb, and the runoff bucket places an end of curb.
The device that is used to set up indoor water and soil conservation model that the present invention proposes has following characteristics and advantage:
1, the person in charge of this rainfall simulation device and arm are formed by pvc pipe light, cheap, that be easy to process, have greatly saved the cost of equipment, and have been easy to install; On the other hand, because pvc pipe is easy to processing, the spray orifice of rain controller can be processed very meticulously, thus the raindrop of its simulation can be more even than the raindrop of conventional iron pipe system rain controller generation, particle diameter can be littler.
2, this rainfall simulation device comprises a blow-off pipe, can discharge impurity in the rain controller by tail pipe; Can also discharge impurity by the spray orifice on the rain controller arm by adding the pressure in the bassoon in addition, to reach the purpose of cleaning rain controller.
3, the raininess uniformity coefficient height of this rain controller can be suitable for the indoor rainfall simulation model test of larger area.The effective projected area of the rainfall of example of the present invention is 2.5m * 3.5m.
4, afflux bucket and sampler combine in this rainfall system, can measure the instantaneous sediment concentration of model outlet.In the water and soil conservation test, generally can only measure the average sediment yield of specifying the basin.Yet, the muddy water in model exit can be collected rapidly by the afflux bucket among the present invention; By sampler, institute's water sampling is adopted in the density bottle, and then recorded the sediment concentration of muddy water then.Because therefore the current in afflux bucket of the present invention can be collected in a big way can realize the sampling of instantaneous sediment yield; Owing to except comprising conventional sampling jar, also comprise the support of a mixing needle, a band funnel in the sampler of the present invention, therefore can will comprise rough sand hyper-concentration flow sediment concentration also energy measurement come out.
Even 5 runoff buckets are placed out-of-flatness, also can measure the volume of runoff yield directly, easily.Because testing ground mud impurity is more, ground is uneven, and to measure runoff yield be one of main contents of this test, and observed quantity is very big, so succeeding in developing of this runoff bucket improved work efficiency widely.This runoff bucket is changed a social system by Plastic Drum, and how many differences according to survey current volume can have plurality of specifications.
Description of drawings
Fig. 1 is the structural representation of existing a kind of rainfall simulator.
Fig. 2 is the structural representation of existing a kind of rain controller.
Fig. 3 is the structural representation that the present invention sets up being used to of proposing the device of indoor water and soil conservation model.
Fig. 4 is the upward view of rain controller in apparatus of the present invention.
Fig. 5 is the synoptic diagram of runoff bucket used in apparatus of the present invention.
Among Fig. 1～Fig. 5, the 1st, rainfall simulation device, the 2nd, underlying surface model, the 3rd, Conic nozzle, the 4th, support, the 11st, rain controller, the 12nd, water inlet pipe, the 13rd, support, the 14th, waterproof awning, the 15th, underlying surface model, the 16th, runoff bucket, the 17th, curb, the 18th, abutment wall before the model, the 19th, sampler, the 20th, domatic, the 21st, removable side dividing plate, the 22nd, model side wall, the 23rd, model rear bulkhead, the 24th, waterproof awning control rope, the 25th, blow-off pipe, the 26th, rain controller is responsible for, the 27th, rain controller arm, the 28th, rain controller hole for water spraying, the 29th, scale.
Embodiment
The device that is used to set up indoor water and soil conservation model that the present invention proposes, its structure comprises rain controller 11, waterproof awning 14, underlying surface model 15, sampler 19 and runoff bucket 16 as shown in Figure 3.Rain controller 11 places the top of support 13, and waterproof awning 14 places the middle part of support 13, and underlying surface model 15 places the bottom of support 13.Rain controller 11 is made up of the person in charge 26 and arm 27, is responsible for to be square, and many arms are parallel among the person in charge, and the person in charge and arm are interconnected.A side of the person in charge 26 is provided with water inlet pipe 12, and relative opposite side is provided with blow-off pipe 25.That underlying surface model 15 comprises is domatic 20, abutment wall, removable side dividing plate 21 and removable rear bulkhead 23, and domatic 20 is the bottom of model, and four sides of model are respectively side wall 22, removable rear bulkhead 23, removable side dividing plate 21 and preceding abutment wall 18.Sampler 19 places a side of the preceding abutment wall of model, and the below of preceding abutment wall is provided with curb 17, and runoff bucket 16 places an end of curb 17.
Device of the present invention is regulated the water control valve door of rain controller based on the pipe network following spray rain controller of pvc pipe material, and the water source of pressure stability, pressure controlled amount can be provided to rain controller.Confirm that through experimental study under the constant condition of the placement location of rain controller, the water pressure in the rain controller water inlet pipe and the size of raininess are linear dependence.Rain controller 11 and waterproof awning 14 constitute the rainfall system.Rain controller comprises is responsible for 26 and arm 27 two parts, its structure as shown in Figure 4, predominant tube diameter 5cm, arm diameter 1.6cm.Arm is parallel to each other, is drilled with the hole for water spraying 28 that diameter is 1mm towards the tube wall of underlay surface model one side, and all hole for water sprayings evenly distribute on a surface level.In this test, raindrop are spraying under certain speed, and its height of drop surpasses 2.5m, and maximum particle diameter is less than 4mm, so can think that the speed of raindrop splass underlying surface of this rain controller has reached terminal velocity substantially.In the rainfall simulation test, initial raininess instability.For avoiding the influence of this part rainfall to the soil erosion amount, available canvas waterproof awning 14 blocks initial rainfall, just waterproof awning is drawn back after waiting rainfall stable, and rainfall is acted on the underlying surface model; When rain test finishes, draw waterproof awning control rope 24 rapidly in, block rainwater, close electric brake then, to avoid in the rain controller remaining current the influence of soil erosion.Blow-off pipe 25 can be got rid of the impurity that accumulates in the rain controller, in order to avoid the spray orifice of rain controller is blocked.
The model district is made up of model abutment wall 22 and underlying surface model.The abutment wall of model is built by laying bricks or stones by brick and mortar, and cement plaster is in case the model infiltration.The side dividing plate 21 and the rear bulkhead 23 of model can move, to make the domatic model of different scale.
Sampling system divides observation to produce husky total amount sampling system and the husky concentration sampling system of the instantaneous product of observation two parts.The former mainly comprises curb 17, runoff bucket 16 and connects the stream pond.Rainfall simulation is all collected (if the runoff yield volume can be measured too greatly in batches) in the runoff bucket with the muddy water that the erosion caused by sloping surfaces model produces after on-test, by the reading of runoff bucket, can measure the runoff yield volume of time rainfall; If measure the sediment concentration of each respective volume muddy water correspondence again with the density bottle method, then can measure the sediment yield of time rainfall.
Runoff bucket used in this device is by the transformation of the way of common plastics bucket, and its structure as shown in Figure 5.Be pasted with two sections steel tapes 29 on the inwall of Plastic Drum, its line is by the center of Plastic Drum, and so no matter how how the runoff bucket tilts, and the mean value of both sides rule water surface reading is always the water level value at runoff bucket center.Water level-the PRESSURE-VOLUME RELATION of runoff bucket as long as read the reading of both sides rule, has just been determined the volume of inner bucket water stream in advance by calibration.
Sampler 19 is a leg-of-mutton flat funnel, is fixed on the abutment wall 18 that model goes out head piece, and it can put together the current in a big way, to accelerate sample rate.Water sand in the sampler is poured in the density bottle, behind the scales/electronic balance weighing, can calculate the sediment concentration of water sample with the density bottle method.
Claims (1)
1, a kind of device that is used to set up indoor water and soil conservation model is characterized in that this device comprises rain controller, waterproof awning, underlying surface model, sampler and runoff bucket; Described rain controller places the top of support, and waterproof awning places the middle part of support, and the underlying surface model places the bottom of support; Described rain controller is made up of the person in charge and arm, is responsible for to be square, and many arms are parallel among the person in charge, and the person in charge and arm are interconnected, and the person in charge's a side is provided with water inlet pipe, and relative opposite side is provided with blow-off pipe; That described underlying surface model comprises is domatic, abutment wall, removable side dividing plate and removable rear bulkhead, and domatic is the bottom of model, and four sides of model are respectively side wall, removable rear bulkhead, removable side dividing plate and preceding abutment wall; Described sampler places a side of the preceding abutment wall of model, and the below of preceding abutment wall is provided with curb, and the runoff bucket places an end of curb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029760 CN1218179C (en) | 2004-03-26 | 2004-03-26 | Appts. for setting up indoor water soil conservation model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029760 CN1218179C (en) | 2004-03-26 | 2004-03-26 | Appts. for setting up indoor water soil conservation model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563986A true CN1563986A (en) | 2005-01-12 |
| CN1218179C CN1218179C (en) | 2005-09-07 |
Family
ID=34480987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410029760 Expired - Fee Related CN1218179C (en) | 2004-03-26 | 2004-03-26 | Appts. for setting up indoor water soil conservation model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1218179C (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507560C (en) * | 2005-12-27 | 2009-07-01 | 西北农林科技大学 | Rainfall regulation and control experiment research device and experimental method |
| CN101086494B (en) * | 2007-07-03 | 2010-05-26 | 浙江大学 | Foundation and slope engineering model test platform |
| CN101436359B (en) * | 2008-08-18 | 2010-06-23 | 大连理工大学 | Apparatus for establishing urban water-through surface water collection effect test |
| CN101927221A (en) * | 2010-08-25 | 2010-12-29 | 清华大学 | Rainfall simulation system |
| CN101000337B (en) * | 2006-12-30 | 2011-04-27 | 大连理工大学 | Method for implementing semi-proportional model test of soil and water conservation |
| CN102213711A (en) * | 2011-03-07 | 2011-10-12 | 北京师范大学 | Experimental device for optimizing plant retention system structure based on comprehensive water quality and quantity control |
| CN102721800A (en) * | 2012-06-27 | 2012-10-10 | 北京师范大学 | Artificial rainfall runoff and soil water motion simulation experimental system |
| CN103439245A (en) * | 2013-08-23 | 2013-12-11 | 西北农林科技大学 | Portable field manual simulation rainfall device |
| CN103472205A (en) * | 2013-09-03 | 2013-12-25 | 中国长江三峡集团公司 | Slope water-soil loss experiment device and method under combined extreme meteorological conditions |
| CN103487567A (en) * | 2013-09-16 | 2014-01-01 | 大连理工大学 | Device and method for building trench slope gravity erosion process field test |
| CN104126463A (en) * | 2014-07-15 | 2014-11-05 | 昆明理工大学 | Adjustable and controllable simulated rainfall device |
| CN104316672A (en) * | 2014-10-22 | 2015-01-28 | 西安理工大学 | Variable width slope surface soil erosion model device based on self-adaptive horizontal sidewalk |
| CN104569347A (en) * | 2015-01-13 | 2015-04-29 | 中国计量学院 | Device for simulating and detecting catastrophe of rock and earth mass |
| CN105736923A (en) * | 2016-04-27 | 2016-07-06 | 广州市世博电器有限公司 | Liquid crystal television mount with positioning and mounting convenience |
| CN105974095A (en) * | 2016-07-20 | 2016-09-28 | 中国水利水电科学研究院 | Test device for comparing rainfall runoff production of different underlying surfaces |
| CN107008600A (en) * | 2017-05-16 | 2017-08-04 | 新疆农业大学 | A kind of Portable artificial rainfall simulation device |
| CN109061112A (en) * | 2018-10-24 | 2018-12-21 | 中国地质大学（武汉） | A kind of artificially-simulated rainfall device for side slope full scale model test |
-
2004
- 2004-03-26 CN CN 200410029760 patent/CN1218179C/en not_active Expired - Fee Related
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507560C (en) * | 2005-12-27 | 2009-07-01 | 西北农林科技大学 | Rainfall regulation and control experiment research device and experimental method |
| CN101000337B (en) * | 2006-12-30 | 2011-04-27 | 大连理工大学 | Method for implementing semi-proportional model test of soil and water conservation |
| CN101086494B (en) * | 2007-07-03 | 2010-05-26 | 浙江大学 | Foundation and slope engineering model test platform |
| CN101436359B (en) * | 2008-08-18 | 2010-06-23 | 大连理工大学 | Apparatus for establishing urban water-through surface water collection effect test |
| CN101927221A (en) * | 2010-08-25 | 2010-12-29 | 清华大学 | Rainfall simulation system |
| CN102213711A (en) * | 2011-03-07 | 2011-10-12 | 北京师范大学 | Experimental device for optimizing plant retention system structure based on comprehensive water quality and quantity control |
| CN102213711B (en) * | 2011-03-07 | 2013-07-31 | 北京师范大学 | Experimental device for optimizing plant retention system structure based on comprehensive water quality and quantity control |
| CN102721800B (en) * | 2012-06-27 | 2015-01-07 | 北京师范大学 | Artificial rainfall runoff and soil water motion simulation experimental system |
| CN102721800A (en) * | 2012-06-27 | 2012-10-10 | 北京师范大学 | Artificial rainfall runoff and soil water motion simulation experimental system |
| CN103439245B (en) * | 2013-08-23 | 2015-09-23 | 西北农林科技大学 | Portable field artificial raining-simulated apparatus |
| CN103439245A (en) * | 2013-08-23 | 2013-12-11 | 西北农林科技大学 | Portable field manual simulation rainfall device |
| CN103472205B (en) * | 2013-09-03 | 2014-10-08 | 中国长江三峡集团公司 | Slope water-soil loss experiment device and method under combined extreme meteorological conditions |
| CN103472205A (en) * | 2013-09-03 | 2013-12-25 | 中国长江三峡集团公司 | Slope water-soil loss experiment device and method under combined extreme meteorological conditions |
| WO2015032199A1 (en) * | 2013-09-03 | 2015-03-12 | 中国长江三峡集团公司 | Slope water-soil loss experiment apparatus and method in combined extreme meteorological conditions |
| CN103487567A (en) * | 2013-09-16 | 2014-01-01 | 大连理工大学 | Device and method for building trench slope gravity erosion process field test |
| CN103487567B (en) * | 2013-09-16 | 2015-07-15 | 大连理工大学 | Device and method for building trench slope gravity erosion process field test |
| CN104126463A (en) * | 2014-07-15 | 2014-11-05 | 昆明理工大学 | Adjustable and controllable simulated rainfall device |
| CN104126463B (en) * | 2014-07-15 | 2016-01-20 | 昆明理工大学 | A kind of regulatable artificially-simulated rainfall device |
| CN104316672A (en) * | 2014-10-22 | 2015-01-28 | 西安理工大学 | Variable width slope surface soil erosion model device based on self-adaptive horizontal sidewalk |
| CN104569347A (en) * | 2015-01-13 | 2015-04-29 | 中国计量学院 | Device for simulating and detecting catastrophe of rock and earth mass |
| CN104569347B (en) * | 2015-01-13 | 2016-03-23 | 中国计量学院 | The simulation of Rock And Soil catastrophe and pick-up unit |
| CN105736923A (en) * | 2016-04-27 | 2016-07-06 | 广州市世博电器有限公司 | Liquid crystal television mount with positioning and mounting convenience |
| CN105736923B (en) * | 2016-04-27 | 2018-07-13 | 广州市世博电器有限公司 | Facilitate the LCD TV hanger of location and installation |
| CN105974095A (en) * | 2016-07-20 | 2016-09-28 | 中国水利水电科学研究院 | Test device for comparing rainfall runoff production of different underlying surfaces |
| CN107008600A (en) * | 2017-05-16 | 2017-08-04 | 新疆农业大学 | A kind of Portable artificial rainfall simulation device |
| CN107008600B (en) * | 2017-05-16 | 2019-01-29 | 新疆农业大学 | A kind of Portable artificial rainfall simulation device |
| CN109061112A (en) * | 2018-10-24 | 2018-12-21 | 中国地质大学（武汉） | A kind of artificially-simulated rainfall device for side slope full scale model test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1218179C (en) | 2005-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1218179C (en) | Appts. for setting up indoor water soil conservation model | |
| CN107096637A (en) | A kind of simple and efficient sandstone screening plant | |
| CN207832791U (en) | Soil loss monitoring device | |
| CN110152777A (en) | A kind of efficient municipal construction sandstone cleaning, drying equipment | |
| CN208043608U (en) | A kind of novel water permeable concrete permeable coefficient testing device | |
| CN101648792B (en) | Protecting mortar of express highway roadbed surface hard-face terrace | |
| CN107620284A (en) | The heap dam or dam break scale model experimental provision of a kind of mine tailing | |
| CN213986117U (en) | Device that pervious concrete road surface blockked up under different rainfall of simulation and runoff circumstances | |
| CN205643059U (en) | Measurement device for cement concrete pavement top layer scour resistance ability | |
| CN108098995A (en) | A kind of municipal construction high-effective concrete mixing arrangement | |
| CN207154234U (en) | A kind of efficiently building sandstone screening cleaning device | |
| CN210322718U (en) | Real-time measuring device for simulating real working environment and water permeability coefficient change of water permeable brick | |
| CN201689033U (en) | Permeable environment simulator experiment apparatus applied for permeable brick | |
| CN108103892A (en) | A kind of safe concrete material shaking device of municipal construction | |
| Daneshfaraz et al. | Experimental investigation of the performance of inclined gabion drop equipped with a horizontal screen | |
| CN201243518Y (en) | Roof greening planting pool convenient for collecting rainwater | |
| CN206426273U (en) | A kind of civil construction agitator | |
| CN101654957B (en) | Method for maintaining cement-based material in early stages | |
| CN111995970A (en) | Ceramic tile adhesive and test system thereof | |
| CN106226498B (en) | A kind of uniform water sand analogue means of thin layer | |
| CN206667433U (en) | A kind of efficiently floating type inlet for stom water water fetching device | |
| CN206192989U (en) | Paddy field surface runoff collection device suitable for different run -offs | |
| CN2591616Y (en) | Testing device for slope type soils infiltration rate | |
| CN203053962U (en) | Surface runoff monitoring child-parent pool device | |
| CN105133839A (en) | Mortar 3D printing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050907 |