CN108871865B - Full-process automatic rainfall runoff sampling device - Google Patents
Full-process automatic rainfall runoff sampling device Download PDFInfo
- Publication number
- CN108871865B CN108871865B CN201810816176.2A CN201810816176A CN108871865B CN 108871865 B CN108871865 B CN 108871865B CN 201810816176 A CN201810816176 A CN 201810816176A CN 108871865 B CN108871865 B CN 108871865B
- Authority
- CN
- China
- Prior art keywords
- water
- rainwater
- full
- lever
- horizontal section
- 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.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 238000007689 inspection Methods 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims 1
- 239000000523 sample Substances 0.000 description 32
- 239000007788 liquid Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a full-process automatic rainfall runoff sampling device which can automatically sample any rainfall and realize full-process automatic sampling. The device comprises an inspection well, an upstream rainwater pipe and a downstream rainwater pipe, wherein an inlet of an inner cavity of the inspection well is connected with an outlet of the upstream rainwater pipe, and an outlet of the inner cavity of the inspection well is connected with an inlet of the downstream rainwater pipe, and the device is characterized in that: the rainwater hopper is arranged right below the position of the inner cavity of the inspection well, the rainwater inlet at the upper part of the rainwater hopper is used for being connected with the rainwater runoff flowing out of the outlet of the upstream rainwater pipe, the rainwater pump further comprises a lever, the bottom of the rainwater hopper is supported on the upper end face of one end of the lever, the upper end face of the other end of the lever is provided with a short joint sheet, two fixed contacts are arranged right above the short joint sheet, and at least one water sample bottle is arranged in the upper area of the inner cavity of the inspection well.
Description
Technical Field
The invention relates to the technical field of environmental protection water treatment, in particular to a full-process automatic rainwater runoff sampling device.
Background
In recent years, along with effective control of the pollution discharged by the sewage point source, the problem of the pollution of the rainwater point source is increasingly prominent, urban waterlogging, water resource loss and lack of water safety guarantee are increased, the pollution of runoff and the water ecological environment are worsened, and the construction of a sponge city for reducing the influence of development on rainfall runoff and recovering natural water circulation is promoted to be carried out in various places of China. The research of the rainwater runoff pollution characteristics is the foundation for developing the construction of 'sponge cities', and the collection of the rainwater runoff water sample is the first step for realizing the work. In order to reduce the manpower work and ensure the timeliness of the collection of the rainfall runoff samples, various automatic sampling devices are generated. At present, a commercial automatic rainfall runoff sampling device is connected with a flowmeter and a liquid level meter mainly through a modularized program structure, and automatically samples according to time or liquid level height. However, there are great limitations to the use of such samplers, and severe pipe conditions must be avoided, otherwise erroneous or unstable readings may be caused:
(1) Mounting at the drain or turbulence should be avoided
(2) The probe cannot operate under continuous low liquid level conditions
The fact that the liquid level cannot be operated at a low level is the greatest disadvantage of the sampler, the current popular area speed probe is taken as an example, when the liquid level is lower than the probe, the liquid level cannot be detected, therefore, the minimum liquid level is required to be 25mm, and otherwise, sampling cannot be performed because of being perceived.
However, when the raining is at the beginning or the rainfall is small, the water level in the pipeline basically cannot meet the requirements, the initial rainwater and the rainwater sample under the small rain condition cannot be collected, but the most pollutants carried by the rainwater runoff are the most important part for researching the pollution control of the rainwater runoff. The absence of initial rainwater and small flow sample collection makes the automatic sampler lose timeliness significance to a great extent.
Disclosure of Invention
Aiming at the problems, the invention provides a full-process automatic rainfall runoff sampling device which can automatically sample any rainfall and realize full-process automatic sampling.
The technical scheme of the full-process automatic rainfall runoff sampling device is as follows: the device comprises an inspection well, an upstream rainwater pipe and a downstream rainwater pipe, wherein an inlet of an inner cavity of the inspection well is connected with an outlet of the upstream rainwater pipe, and an outlet of the inner cavity of the inspection well is connected with an inlet of the downstream rainwater pipe, and the device is characterized in that: the water sampling device is characterized in that a rain water bucket is arranged right below the position of the inner cavity of the inspection well, a rain water inlet at the upper part of the rain water bucket is used for being connected with a rain water runoff flowing out of the outlet of the upstream rain water pipe, the water sampling device further comprises a lever, the bottom of the rain water bucket is supported on the upper end face of one end of the lever, a short joint piece is arranged on the upper end face of the other end of the lever, two fixed contacts are arranged right above the short joint piece, at least one water sample bottle is arranged in the upper area of the inner cavity of the inspection well, the water sample bottle is connected with a total water pumping pipeline after being connected with respective electromagnetic valves through respective branch pipelines, the starting end of the total water pumping pipeline is connected with the inner cavity of the rain water bucket, the total water pumping pipeline is provided with a water pump, the tail end of the total water pumping pipeline is externally connected with a vent valve, the two contacts are externally connected with communication signals, the output end of the electric box is externally connected with an external electric box, and the output end of the electric box is externally connected with the water pump, each electromagnetic valve.
It is further characterized by:
the bottom end surface of the middle area in the length direction of the lever is supported on a fulcrum, the fulcrum is supported on a bracket, the bottom of the bracket is supported on the bottom of the inspection well, and the total height of the bracket and the fulcrum ensures that a short tab at the other end of the lever contacts two contacts after rotating in place;
the bottom of the short joint piece is provided with a balancing weight, and the weight of the balancing weight ensures that the rain water bucket is in a high-level state when the rain water bucket end of the lever is not fully filled with water;
the total water pumping pipeline comprises a vertical section and a horizontal section, wherein the vertical section is arranged from the inner cavity of the rainwater hopper to one end of the horizontal section from bottom to top, the water pump is arranged on the vertical section, the horizontal section is sequentially connected with corresponding branch pipelines in parallel in the horizontal length direction, each branch pipeline is vertically downwards arranged, each branch pipeline is respectively provided with a corresponding electromagnetic valve, the tail end position of the lower part of each branch pipeline is connected with the corresponding inlet end of the water sample bottle, and the other end of the horizontal section is provided with the vent valve;
the drain valve is arranged in an area far away from the rainwater hopper, the drain valve is arranged in a vertical drain pipe, and a lower outlet of the vertical drain pipe is far away from an upper water inlet of the rainwater hopper;
the rainwater hopper is in a structure of opening from bottom to top, and a part of overlapping section is arranged at the position of the upper water inlet of the rainwater hopper, which is close to the outlet of the upstream rainwater pipe, so that the accurate receiving of the discharged water is ensured;
the number of the water sample bottles is not less than two, all the sampling bottles are sequentially arranged along the horizontal section, a sampling program is preset in the electric box, the sampling program controls the electromagnetic valves of the water sample bottles to be sequentially opened and closed, and water in the water bucket is sequentially pumped into the water sample bottles arranged along the horizontal section;
the electric box is powered by a 12V direct current storage battery, so that safety and reliability are ensured.
After the invention is adopted, the rain bucket is connected with the short-circuit piece through the lever, and the upper end of the short-circuit piece is provided with two contacts; the signals after the two pairs of contacts are communicated are connected into an electric box, a water pumping pipe is connected with a plurality of water sample bottles, and each water sample bottle is controlled to be opened and closed by an electromagnetic valve; the starting end of the total water suction pipeline is communicated with the inner cavity of the rainwater hopper, and rainwater is pumped by the water pump; when the rainwater hopper is full of water, the short joint sheet is lifted upwards through the fulcrum under the action of gravity, the two contacts are communicated, a communication signal is connected into the electric box, the operation of the water pump is controlled, the electromagnetic valve of the water sample bottle is controlled to be sequentially opened and closed by a preset sampling program (time control or flow control), water in the water hopper is sequentially pumped into the water sample bottle, and when the control program instructs not to collect water samples and rainwater is still in the rainwater hopper, the emptying valve is automatically opened to drain the rainwater in the rainwater hopper; so no matter how small the rainfall is, as long as water flows out of the pipeline, the rainwater hopper can be caught and pumped away; the automatic sampling device can automatically sample in any rainfall and realize the whole process of automatic sampling.
Drawings
FIG. 1 is a schematic diagram of the front view of the present invention;
the names corresponding to the serial numbers in the figures are as follows:
short joint piece 1, lever 2, support 3, fulcrum 4, rainwater fill 5, upstream downspout 6, water suction pipe 7, water pump 8, solenoid valve 9, inspection shaft 10, blow-down valve 11, water sample bottle 12, contact A13, contact B14, downstream downspout 15, balancing weight 16, horizontal segment 17, branch pipe 18, vertical drain pipe 19.
Detailed Description
An automatic rainwater runoff sampling device in the whole process is shown in fig. 1: the water sample bottle comprises an inspection well 10, an upstream rainwater pipe 6 and a downstream rainwater pipe 15, wherein an inlet of an inner cavity of the inspection well 10 is connected with an outlet of the upstream rainwater pipe 6, an outlet of the inner cavity of the inspection well 10 is connected with an inlet of the downstream rainwater pipe 15, a rainwater hopper 5 is arranged right below the position of the inner cavity of the inspection well 10, an upper water inlet of the rainwater hopper 5 is used for being connected with rainwater runoff flowing out of the outlet of the upstream rainwater pipe 6, the water sample bottle also comprises a lever 2, the bottom of the rainwater hopper 5 is supported on the upper end face of one end of the lever 2, a short joint piece 1 is arranged on the upper end face of the other end of the lever 2, two fixed contacts which are respectively a contact A13 and a contact B14 are arranged right above the short joint piece 1, at least one water sample bottle 12 is arranged in the upper area of the inner cavity of the inspection well 10, the water sample bottle 12 is externally connected with a corresponding electromagnetic valve 9 through a respective branch pipe 18, the starting end of the total water suction pipe is connected with the inner cavity of the rainwater hopper 5, the water pump 8 is arranged on the total water pipe, the tail end of the total water suction pipe is provided with a water suction pipe, the two tail ends of the total water suction pipe are connected with an air discharge valve 11, and the two air discharge valves are connected to the air pump 11, and the air outlet boxes are connected with the air outlet box according to the situation, and the situation that the air discharge valve is connected with the air outlet box is connected with the air case, and the air tank is connected with the air tank, and the signal through the air tank.
The bottom end surface of the middle area in the length direction of the lever 2 is supported on a supporting point 3, the supporting point 3 is supported on a support 4, the bottom of the support 4 is supported on the bottom of an inspection well 10, and the total height of the support 4 and the supporting point 3 ensures that a short-circuit piece at the other end of the lever 2 contacts two contacts after rotating in place;
the bottom of the short joint piece 1 is provided with a balancing weight 16, and the weight of the balancing weight 16 ensures that the rain water bucket 5 is in a high-level state when the end of the rain water bucket 5 of the lever 2 is not fully filled with water;
the total water pumping pipeline comprises a vertical section 7 and a horizontal section 17, wherein the vertical section 7 is arranged from the inner cavity of the rainwater hopper 5 to one end of the horizontal section 17 from bottom to top, a water pump 8 is arranged on the vertical section 7, corresponding branch pipelines 18 are sequentially connected in parallel in the horizontal length direction of the horizontal section 17, each branch pipeline 18 is vertically downwards arranged, each branch pipeline 18 is respectively provided with a corresponding electromagnetic valve 9, the tail end position of the lower part of each branch pipeline 18 is connected with the inlet end of a corresponding water sample bottle 12, and the other end of the horizontal section 17 is provided with an emptying valve 11;
the emptying valve 11 is arranged in a region far away from the rainwater hopper 5, the emptying valve 11 is arranged in a vertical drain pipe 19, and a lower outlet of the vertical drain pipe 19 is far away from an upper water inlet of the rainwater hopper 5;
the rainwater hopper 5 is in a structure which is opened from bottom to top, and a part of overlapping section is arranged at the position of the upper water inlet of the rainwater hopper 5, which is close to the outlet of the upstream rainwater pipe 6, so that the accurate receiving of the discharged water is ensured;
the number of the water sample bottles 12 is not less than two, all the sampling bottles 12 are sequentially arranged along the horizontal section 17, a sampling program is preset in the electric box, the sampling program controls the electromagnetic valves of the water sample bottles to be sequentially opened and closed, and water in the water bucket is sequentially pumped into the water sample bottles arranged along the horizontal section;
the electric box is specifically powered by a 12V direct current storage battery, so that safety and reliability are ensured.
The working principle is as follows: the rainwater hopper is connected with the short-circuit piece through a lever, and the upper end of the short-circuit piece is provided with a contact A and a contact B; the signals communicated by the contact A and the contact B are connected into an electric box, and the electric box is powered by a 12V direct current storage battery, so that the electric box is safe and reliable; the horizontal section is connected with a plurality of water sample bottles, and each water sample bottle is controlled to be opened and closed by an electromagnetic valve; the lower end of the vertical section is introduced into the inner cavity of the rainwater hopper, and rainwater is pumped by the water pump; when the rainwater hopper is full of water, the short joint piece is lifted upwards through the fulcrum under the action of gravity, the contact A and the contact B are communicated, a communication signal is connected into the electric box, the operation of the water pump is controlled, the electromagnetic valve of the water sample bottle is controlled to be sequentially opened and closed by a preset sampling program (time control or flow control), water in the water hopper is sequentially pumped into the water sample bottle, and when the control program instructs not to collect water samples and rainwater is still in the rainwater hopper, the emptying valve is automatically opened to drain the rainwater in the rainwater hopper; so no matter how small the rainfall is, as long as water flows out of the pipeline, the rainwater hopper can be caught and pumped away; the automatic sampling device can automatically sample in any rainfall and realize the whole process of automatic sampling.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made in accordance with the scope of the present invention shall fall within the scope of the present patent.
Claims (6)
1. The utility model provides an automatic rainfall runoff sampling device of overall process, its includes inspection shaft, upper reaches downspout, the entry of the inner chamber of inspection shaft inserts the export of upspout, the exit linkage of the inner chamber of inspection shaft the import of downspout, its characterized in that: the water sample bottle is externally connected with respective corresponding electromagnetic valves through respective branch pipelines and then is connected with a total water pumping pipeline, the starting end of the total water pumping pipeline is connected with the inner cavity of the water drain pipeline, a water pump is arranged on the total water pumping pipeline, the tail end of the total water pumping pipeline is externally connected with a vent valve, the two contacts are externally connected to a communication signal, the communication signal is connected with an external electric box, and the output end of the electric box is externally connected to the water pump, each electromagnetic valve and the vent valve respectively;
the bottom end surface of the middle area in the length direction of the lever is supported on a fulcrum, the fulcrum is supported on a bracket, the bottom of the bracket is supported on the bottom of the inspection well, and the total height of the bracket and the fulcrum ensures that a short tab at the other end of the lever contacts two contacts after rotating in place;
the total pumping pipeline comprises a vertical section and a horizontal section, the vertical section is arranged from the inner cavity of the rainwater hopper to one end of the horizontal section from bottom to top, the water pump is arranged on the vertical section, corresponding branch pipelines are sequentially connected in parallel in the horizontal length direction of the horizontal section, each branch pipeline is vertically downwards arranged, each branch pipeline is respectively provided with a corresponding electromagnetic valve, the lower tail end position of each branch pipeline is connected with a corresponding inlet end of the water sample bottle, and the other end of the horizontal section is provided with a vent valve.
2. A full-process automatic stormwater runoff sampling apparatus as claimed in claim 1, wherein: the bottom of short link has the balancing weight, the weight of balancing weight ensures that the rainwater fill of lever is in the high position state when the rainwater fill end does not connect full water.
3. A full-process automatic stormwater runoff sampling apparatus as claimed in claim 1, wherein: the drain valve is arranged in the area far away from the rainwater hopper, the drain valve is arranged in a vertical drain pipe, and the lower outlet of the vertical drain pipe is far away from the upper water inlet of the rainwater hopper.
4. A full-process automatic stormwater runoff sampling apparatus as claimed in claim 1, wherein: the rainwater hopper is in a structure which is opened from bottom to top, and a part of overlapping sections are arranged at the position, close to the outlet of the upstream rainwater pipe, of the upper water inlet of the rainwater hopper.
5. A full-process automatic stormwater runoff sampling apparatus as claimed in claim 1, wherein: the number of the water sample bottles is not less than two, all the sampling bottles are sequentially arranged along the horizontal section, a sampling program is preset in the electric box, the sampling program controls the electromagnetic valves of the water sample bottles to be sequentially opened and closed, and water in the water bucket is sequentially pumped into the water sample bottles arranged along the horizontal section.
6. A full-process automatic stormwater runoff sampling apparatus as claimed in claim 1, wherein: the electric box is specifically powered by a 12V direct current storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816176.2A CN108871865B (en) | 2018-07-24 | 2018-07-24 | Full-process automatic rainfall runoff sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816176.2A CN108871865B (en) | 2018-07-24 | 2018-07-24 | Full-process automatic rainfall runoff sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108871865A CN108871865A (en) | 2018-11-23 |
| CN108871865B true CN108871865B (en) | 2023-12-05 |
Family
ID=64304624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810816176.2A Active CN108871865B (en) | 2018-07-24 | 2018-07-24 | Full-process automatic rainfall runoff sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108871865B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326352A (en) * | 2020-11-03 | 2021-02-05 | 南开大学 | Automatic sampling device of ground rainwater runoff |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762409A (en) * | 2010-01-27 | 2010-06-30 | 北京师范大学 | Automatic urban rainfall runoff sampler |
| TW201112989A (en) * | 2009-10-14 | 2011-04-16 | We Go Electronic Co Ltd | Electrothermic type brewer set and electrothermic type unit thereof |
| CN103439145A (en) * | 2013-08-27 | 2013-12-11 | 同济大学 | Automatic water sample collecting device for rainwater inspection well |
| CN105136519A (en) * | 2015-08-14 | 2015-12-09 | 北京工业大学 | Automatic rainwater runoff collector |
| CN106676699A (en) * | 2016-12-21 | 2017-05-17 | 苏州科技大学 | Mesh-packing yarn manufacturing device and mesh-packing yarn manufacturing method |
| CN206556927U (en) * | 2017-02-24 | 2017-10-13 | 北京市水科学技术研究院 | A kind of underlying surface rainfall runoff automatic sampling apparatus |
| CN208672383U (en) * | 2018-07-24 | 2019-03-29 | 苏州科技大学 | A kind of automatic rainfall runoff sampling apparatus of overall process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101051133B1 (en) * | 2008-10-15 | 2011-07-22 | 한국지질자원연구원 | Spill Rainwater Collector |
-
2018
- 2018-07-24 CN CN201810816176.2A patent/CN108871865B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201112989A (en) * | 2009-10-14 | 2011-04-16 | We Go Electronic Co Ltd | Electrothermic type brewer set and electrothermic type unit thereof |
| CN101762409A (en) * | 2010-01-27 | 2010-06-30 | 北京师范大学 | Automatic urban rainfall runoff sampler |
| CN103439145A (en) * | 2013-08-27 | 2013-12-11 | 同济大学 | Automatic water sample collecting device for rainwater inspection well |
| CN105136519A (en) * | 2015-08-14 | 2015-12-09 | 北京工业大学 | Automatic rainwater runoff collector |
| CN106676699A (en) * | 2016-12-21 | 2017-05-17 | 苏州科技大学 | Mesh-packing yarn manufacturing device and mesh-packing yarn manufacturing method |
| CN206556927U (en) * | 2017-02-24 | 2017-10-13 | 北京市水科学技术研究院 | A kind of underlying surface rainfall runoff automatic sampling apparatus |
| CN208672383U (en) * | 2018-07-24 | 2019-03-29 | 苏州科技大学 | A kind of automatic rainfall runoff sampling apparatus of overall process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108871865A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203782853U (en) | Hydrodynamic self-control initial rainwater abandoning device | |
| CN202925665U (en) | Initial rainwater abandoning device | |
| CN104234119B (en) | One sets up siphon piping device and siphon method thereof fast | |
| CN111287296A (en) | Method and device for intelligent operation of rainwater storage tank | |
| JP2017145680A (en) | Initial rainwater removal device, rainwater tank device having the same, communication network of rainwater tank device and initial rainwater removal method | |
| CN108871865B (en) | Full-process automatic rainfall runoff sampling device | |
| CN201184213Y (en) | Automatic drain slag-discharging apparatus of coal mine down-hole gas pipeline | |
| CN107255603B (en) | Buoyancy type district runoff sediment automatic observation instrument | |
| CN207485747U (en) | Integrated prefabricated pumping plant and sewage disposal system | |
| CN107606376B (en) | A kind of aerating pipelines condensed water or water leakage self-draining arrangement | |
| CN202969560U (en) | Initial rainwater flow-discharging pool capable of automatically controlling rainfall at pool top | |
| CN208672383U (en) | A kind of automatic rainfall runoff sampling apparatus of overall process | |
| CN202755439U (en) | Building pipeline sewage cut-off device | |
| CN206616616U (en) | The rain collector of automatic flow abandoning contaminative early-stage rainwater | |
| CN206094500U (en) | Air hose drainage device | |
| CN105649185B (en) | A kind of positive displacement flow abandoning apparatus | |
| CN201826386U (en) | Water collection interface unit device of vacuum drainage system | |
| CN206696716U (en) | Concentrator bowl draining box fluid automatic recovery system | |
| CN202248219U (en) | Interception well with lever type closure valve | |
| CN203772778U (en) | PH online measuring device for desulfurization absorption tower | |
| CN207851056U (en) | A kind of monitoring system for being drained outside thermal power plant | |
| CN103015518B (en) | Early-stage rainwater drainage pool capable of self-controlling rainfall at pool top | |
| CN207570831U (en) | A kind of embedded loess diafiltration water collecting device | |
| CN111236391A (en) | Intelligent sewage intercepting inspection well | |
| CN111237261A (en) | Siphon drainage structure and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |