CN106680144A - Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline - Google Patents
Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline Download PDFInfo
- Publication number
- CN106680144A CN106680144A CN201611256199.XA CN201611256199A CN106680144A CN 106680144 A CN106680144 A CN 106680144A CN 201611256199 A CN201611256199 A CN 201611256199A CN 106680144 A CN106680144 A CN 106680144A
- Authority
- CN
- China
- Prior art keywords
- tank
- acid solution
- tuning fork
- degassing tank
- measurement
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
- G01N2009/006—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention relates to an automatic air exhausting, dirt removing and density detecting device of an acid-circulation battery formation system pipeline and belongs to the technical field of acid-circulation battery formation system production. The automatic air exhausting, dirt removing and density detecting device comprises an acid fluid inlet pipeline, a primary gas removing tank, a secondary gas removing tank, a measuring tank and an acid fluid outlet pipeline which are sequentially connected, wherein a measuring tank bottom splitter plate is arranged above a sulfuric acid flow dividing pipeline in the measuring tank, a density detecting tuning fork is arranged above a measuring tank bottom flow dividing plate, a tuning fork cleaning spray head corresponding to the density detecting tuning fork is arranged in the measuring tank, the tuning fork cleaning spray head is connected with the acid fluid inlet pipeline through a tuning fork washing pipeline and a tuning fork washing control valve, and a gas exhausting opening of the primary gas removing tank and a gas exhausting opening of the secondary gas removing tank are respectively connected with the acid fluid outlet pipeline through a primary gas removing tank exhausting pipeline and a secondary gas removing tank exhausting pipeline. The automatic air exhausting, dirt removing and density detecting device has the advantages of achieving accurate density measurement, providing accurate numerical values for follow-up automatic complex acid, guaranteeing that the actual acid fluid density is in a controllable range and better guaranteeing battery production quality.
Description
Technical field
System pipeline is internalized into the present invention relates to a kind of sour cycle battery and is vented decontamination device for detecting density automatically, belong to acid
Cycle battery is internalized into system production technical field.
Background technology
Lead accumulator is had cost performance high and can be accounted for the advantages such as recycling, all kinds of battery fields at home and abroad
There is the sour cycle battery internalization of the critical process " formation charging operation " in very big share, and lead accumulator production process
Also there is very universal application with overseas market at home into system, become basically universal.
Wherein, sour cycle battery is internalized into the density on-line measurement of system whether qualified directly influence battery quality.
Control system can automatically extract the data of density on-line checking and be automatically analyzed in lead accumulator production process, and control automatically
System adds sour water to enter line density proportioning, and technological requirement density reaches different numerical value within the different time periods, and does not permit
Perhaps beyond restriction scope, therefore, in process of production, the density of electrolyte is measured and according to different phase during circulation
The precision controlling being adjusted is most important, especially carries out that on-line measurement difficulty is very big in pipeline, and densitometry is inaccurate
Often resulting in actual proportioning cannot ensure beyond technological requirement battery quality, while can also be inaccurate because of measuring, feed back to control
System processed constantly carries out complex acid, causes acid solution amount to be continuously increased outside escape, causes potential safety hazard.
But, influenceing two key issues of density measurement accuracy cannot eliminate, one be in pipeline bubble because recycle acid
The cavitation effect of pump cannot be eliminated, and Density Detection probe is caused measurement density and actual density error big by aeration；Two are
Density measuring probe can be because can adhere to lead mud as use time lengthens surface, and measured value and actual numerical value deviation are big, this
Two problems are current insurmountable problems in industry, also result in the big problem of many producer's battery rejection numbers.
The content of the invention
According to deficiency of the prior art above, the problem to be solved in the present invention is：A kind of reasonable in design, energy are provided
Enough it is fully solved the interference effect that gas in pipelines and deposit lead mud are popped one's head in Density Detection, density accurate measurement, after being
Continuous automatic mixing acid provides accurate numerical value, it is ensured that actual acid solution density can preferably ensure battery production in controlled range
The sour cycle battery of quality is internalized into system pipeline and is vented decontamination device for detecting density automatically.
The technical solution adopted for the present invention to solve the technical problems is：
Described sour cycle battery is internalized into system pipeline and is vented decontamination device for detecting density automatically, including be sequentially connected
Acid solution fluid inlet conduit, degassing tank, secondary degassing tank, measurement tank and an acid solution fluid discharge pipe road, acid solution fluid intake
Pipeline connects a degassing tank, a degasification by circulation duct before control valve before acid solution fluid degasification and acid solution fluid degasification
Tank passes through sulfuric acid fluid shunt line by acid solution fluid passage conduit connecting secondary degassing tank after a degasification, secondary degassing tank
Connection measures tank and stretches to inside measurement tank, and measurement tank bottom part is set above the sulfuric acid fluid shunt line in measurement tank
Stream plate, is provided with the tuning fork densitometer of Density Detection tuning fork, correspondence Density Detection tuning fork above measurement pot bottom flow distribution plate
Tuning fork cleaning sprayer is set in measurement tank, and tuning fork cleaning sprayer is by tuning fork flushing pipe and the door connection of tuning fork washing control valve
Acid solution fluid inlet conduit, measurement pot bottom sets sludge discharge tube, the exhaust of a degassing tank and secondary degassing tank in acid solution
Mouth connects acid solution fluid discharge pipe road, acid solution fluid by a degassing tank discharge duct and secondary degassing tank discharge duct respectively
Discharge line connects acid solution fluid issuing.
Sulfuric acid fluid flows through acid solution fluid inlet conduit into after this device, by after a degassing tank and secondary degassing tank
Gas to mixing in acid solution is separated and discharged, acid solution by after exhaust inside small volumetric measurement tank measured tank bottom
Uniform and stable rising is realized in the effect of portion's flow distribution plate, and Density Detection tuning fork carries out Density Detection to acid solution during rising,
Because the acid solution of detection completely excludes gas, it is possible to reaching accurate measurement density.
By closing control valve before acid solution fluid degasification, open blowdown control valve and small volumetric measurement tank is arranged
Sky, is then turned on tuning fork washing control valve door, the acid solution for having pressure is guided into tuning fork by tuning fork flushing pipe and cleans spray
Head, the flushing to Density Detection tuning fork is realized by the effect of tuning fork cleaning sprayer, and the impurity lead mud produced after flushing is by acid
Sludge discharge tube is discharged in liquid, reaches the effect of tuning fork decontamination, it is ensured that Density Detection tuning fork is not attached by lead mud at work
The influence, can accurately measure acid solution density.
Further preferably measurement pot bottom flow distribution plate is wholely set with measurement tank, uniform on measurement pot bottom flow distribution plate
Through hole is set.Realize the uniform and stable rising of acid solution.
Further preferred, circulation duct is connected with the top inlet of a degassing tank before acid solution fluid degasification.
Further preferred, one time the bottom liquid outlet of degassing tank is connected by acid solution fluid passage conduit after a degasification
The top inlet of secondary degassing tank.
Further preferred, the bottom liquid outlet of secondary degassing tank is connected by sulfuric acid fluid shunt line and stretches to survey
The bottom of measuring tank.
Further preferred, tuning fork flushing pipe one end is connected with acid solution fluid inlet conduit, tuning fork flushing pipe
The tuning fork cleaning sprayer of other end connection measurement tank top.It is easy to clean.
It is further preferably, the exhaust outlet of a degassing tank and secondary degassing tank is arranged at a degassing tank and secondary removes
The top of gas tank.Facilitate the discharge of gas.
Further preferred, acid solution fluid discharge pipe road is connected with the leakage fluid dram of measurement tank top.
Further preferred, tuning fork densitometer is arranged on the side of measurement tank.
The present invention is had an advantageous effect in that：
1st, sour cycle battery of the present invention is internalized into system pipeline and is vented the structure letter of decontamination device for detecting density automatically
It is single, reasonable in design, the gas that effectively can be mixed into purging line or because the gas that produces of the cavitation effect of pump, makes density
Measurement is more accurate.
2nd, sour cycle battery of the present invention is internalized into system pipeline and is vented decontamination device for detecting density automatically by sound
Fork cleaning sprayer can effectively remove the lead mud impurity being attached on the Density Detection tuning fork of tuning fork densitometer, make density measure more
Accurately.
3rd, sour cycle battery of the present invention is internalized into system pipeline and is vented decontamination device for detecting density energy automatically accurately
Detection and feedback acid solution density, for follow-up automatic mixing acid provides accurate numerical value, it is ensured that actual acid solution density in controlled range,
Battery production quality can preferably be ensured, with stronger practicality.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Wherein, 1, acid solution fluid inlet conduit；2nd, tuning fork washing control valve door；3rd, tuning fork flushing pipe；4th, acid solution fluid
Control valve before degasification；5th, circulation duct before the degasification of acid solution fluid；6th, a degassing tank；7th, a degassing tank discharge duct；8、
Acid solution fluid passage conduit after degasification；9th, secondary degassing tank；10th, secondary degassing tank discharge duct；11st, sulfuric acid divided fluid stream
Pipeline；12nd, tank is measured；13rd, pot bottom flow distribution plate is measured；14th, tuning fork cleaning sprayer；15th, Density Detection tuning fork；16th, acid solution stream
Body discharge line；17th, tuning fork densitometer；18th, acid solution fluid issuing；19th, sludge discharge tube in acid solution.
Specific embodiment
Embodiments of the invention are described further below in conjunction with the accompanying drawings：
As shown in figure 1, sour cycle battery of the present invention is internalized into system pipeline is vented decontamination Density Detection dress automatically
Put, including 1, degassing tank 6 of the acid solution fluid inlet conduit being sequentially connected, secondary degassing tank 9, measurement tank 12 and acid solution fluid
Discharge line 16, acid solution fluid inlet conduit 1 is by runner pipe before control valve 4 before acid solution fluid degasification and acid solution fluid degasification
Road 5 connects a top inlet for degassing tank 6, and a bottom liquid outlet for degassing tank 6 is by acid solution fluid after a degasification
The top inlet of the connecting secondary degassing tank 9 of circulation duct 8, the bottom liquid outlet of secondary degassing tank 9 passes through sulfuric acid divided fluid stream
The connection of pipeline 11 measures the bottom of tank 12 and stretches to inside measurement tank 12, the sulfuric acid fluid shunt line 11 in measurement tank 12
Top sets measurement pot bottom flow distribution plate 13, and measurement pot bottom flow distribution plate 13 is wholely set with measurement tank 12, measurement tank bottom part
Through hole is uniformly arranged on stream plate 13, the top of measurement pot bottom flow distribution plate 13 is provided with the tuning fork density of Density Detection tuning fork 15
Meter 17, correspondence Density Detection tuning fork 15 sets tuning fork cleaning sprayer 14 at the top of measurement tank 12, and tuning fork cleaning sprayer 14 passes through
Tuning fork flushing pipe 3 and tuning fork washing control valve door 2 connect acid solution fluid inlet conduit 1, and measurement tank 12 bottom is set in acid solution
The top vent of sludge discharge tube 19, a degassing tank 6 and secondary degassing tank 9 passes through a degassing tank discharge duct 7 respectively
Acid solution fluid discharge pipe road 16, the one end of acid solution fluid discharge pipe road 16 and measurement tank 12 are connected with secondary degassing tank discharge duct 10
The leakage fluid dram at top is connected, the other end connection acid solution fluid issuing 18 in acid solution fluid discharge pipe road 16.
Operation principle of the invention and use process：
Sulfate liquid exhaust work principle：
Sulfuric acid fluid is flowed through before acid solution fluid inlet conduit 1, acid solution fluid degasification before control valve 4, acid solution fluid degasification
Circulation duct 5 enters a degassing tank 6, and when being mixed with the acid solution of gas and being circulated in a degassing tank 6, bubble can float, greatly
Portion gas can mix a small amount of acid solution and enter acid solution fluid by a degassing tank discharge duct 7 via a top of degassing tank 6
Discharge line 16 is simultaneously discharged, and can be acted on decline by pressure by the acid solution being once vented and be led to via a bottom of degassing tank 6
Acid solution fluid passage conduit 8 carries out secondary exhaust from top into secondary degassing tank 9 after crossing a degasification, and remaining gas is two
Secondary degassing tank rises to top and mixes a small amount of acid solution and enters via secondary degassing tank discharge duct 10 from the top of secondary degassing tank 9
Simultaneously discharge in acid solution fluid discharge pipe road 16.Acid solution by secondary exhaust enters small by sulfuric acid fluid shunt line 11 from bottom
Volumetric measurement tank 12, is risen after measuring the shunting of pot bottom flow distribution plate 13 in the small inner homogeneous of volumetric measurement tank 12, is flowed through close
Degree detection tuning fork 15 carries out Density Detection, and acid solution is discharged by acid solution fluid discharge pipe road 16 and acid solution fluid issuing 18 afterwards.
Density Detection tuning fork decontaminates operation principle：
The Density Detection tuning fork 15 used by long-time can make because the lead mud attachment in sulfuric acid influences accuracy of detection
After 7 working days, control valve 4 is closed before acid solution fluid degasification, the blowdown control valve in acid solution on sludge discharge tube 19
Open, by the acid solution emptying in small volumetric measurement tank 12, tuning fork washing control valve door 2 is opened, and acid solution is rinsed by tuning fork and controlled
Valve 2 and tuning fork flushing pipe 3 are formed with pressure spray into tuning fork cleaning sprayer 14, and Density Detection tuning fork 15 is rinsed,
Washing time continues that cleaning effect can be completed within 30 seconds, and the lead dirt thing of cleaning can be by the small bottom of volumetric measurement tank 12 by acid solution
Sludge discharge tube 19 is discharged, and sludge discharge tube 19 in tuning fork washing control valve door 2 and acid solution is closed after the completion of cleaning, opens acid solution
Control valve 4 carries out normal exhaust and Density Detection before fluid degasification.
Simple structure of the present invention, it is reasonable in design, Density Detection precision and Density Detection can be ensured by exhaust and cleaning
Tuning fork is accurate for a long time to measure density, for follow-up automatic mixing acid provides accurate numerical value, it is ensured that actual acid solution density is in controllable model
In enclosing, can preferably ensure battery production quality, with stronger practicality.
The present invention is not limited in above-mentioned specific embodiment, and those of ordinary skill in the art are in essential scope of the invention
Change, remodeling, addition or the replacement inside made, should also belong to protection scope of the present invention.
Claims (9)
1. a kind of sour cycle battery is internalized into system pipeline and is vented decontamination device for detecting density automatically, it is characterised in that：Including according to
The acid solution fluid inlet conduit (1) of secondary connection, degassing tank (6), secondary degassing tank (9), measurement tank (12) and an acid solution fluid
Discharge line (16), before acid solution fluid inlet conduit (1) is by control valve (4) before acid solution fluid degasification and acid solution fluid degasification
Circulation duct (5) connects a degassing tank (6), and a degassing tank (6) is connected by acid solution fluid passage conduit (8) after a degasification
Secondary degassing tank (9) is connect, secondary degassing tank (9) connects measurement tank (12) and stretches to survey by sulfuric acid fluid shunt line (11)
Measuring tank (12) is internal, and sulfuric acid fluid shunt line (11) top in measurement tank (12) sets measurement pot bottom flow distribution plate
(13) the tuning fork densitometer (17) of Density Detection tuning fork (15), correspondence, are provided with above measurement pot bottom flow distribution plate (13)
Density Detection tuning fork (15) sets tuning fork cleaning sprayer (14) in measurement tank (12), and tuning fork cleaning sprayer (14) is rushed by tuning fork
Wash pipeline (3) and tuning fork washing control valve door (2) connects acid solution fluid inlet conduit (1), measurement tank (12) bottom sets acid solution
The exhaust outlet of interior sludge discharge tube (19), a degassing tank (6) and secondary degassing tank (9) passes through a degassing tank blast pipe respectively
Road (7) and secondary degassing tank discharge duct (10) connect acid solution fluid discharge pipe road (16), and acid solution fluid discharge pipe road (16) is even
Connect acid solution fluid issuing (18).
2. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：Described measurement pot bottom flow distribution plate (13) is wholely set with measurement tank (12), measurement pot bottom flow distribution plate (13)
On be uniformly arranged through hole.
3. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：Circulation duct (5) is connected with the top inlet of a degassing tank (6) before described acid solution fluid degasification.
4. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：A described bottom liquid outlet for degassing tank (6) is connected by acid solution fluid passage conduit (8) after a degasification
The top inlet of secondary degassing tank (9).
5. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：The bottom liquid outlet of described secondary degassing tank (9) is connected and stretched to by sulfuric acid fluid shunt line (11)
The bottom of measurement tank (12).
6. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：Described tuning fork flushing pipe (3) one end is connected with acid solution fluid inlet conduit (1), tuning fork flushing pipe (3)
Other end connection measurement tank (12) at the top of tuning fork cleaning sprayer (14).
7. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：A described degassing tank (6) and the exhaust outlet of secondary degassing tank (9) are arranged at a degassing tank (6) and two
The top of secondary degassing tank (9).
8. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：Described acid solution fluid discharge pipe road (16) is connected with the leakage fluid dram at the top of measurement tank (12).
9. sour cycle battery according to claim 1 is internalized into system pipeline and is vented decontamination device for detecting density automatically, its
It is characterised by：Described tuning fork densitometer (17) is arranged on the side of measurement tank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256199.XA CN106680144A (en) | 2016-12-30 | 2016-12-30 | Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256199.XA CN106680144A (en) | 2016-12-30 | 2016-12-30 | Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680144A true CN106680144A (en) | 2017-05-17 |
Family
ID=58872496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611256199.XA Withdrawn CN106680144A (en) | 2016-12-30 | 2016-12-30 | Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106680144A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211723A (en) * | 2017-07-08 | 2019-01-15 | 北京工标传感技术有限公司 | A kind of direct insertion tuning fork densitometer |
| CN111272607A (en) * | 2018-12-05 | 2020-06-12 | 重庆雅讯电源技术有限公司 | Battery pack electrolyte density measuring device and method |
| CN116519536A (en) * | 2023-07-05 | 2023-08-01 | 中南大学 | Device and method for measuring specific gravity of liquid in pipeline |
-
2016
- 2016-12-30 CN CN201611256199.XA patent/CN106680144A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211723A (en) * | 2017-07-08 | 2019-01-15 | 北京工标传感技术有限公司 | A kind of direct insertion tuning fork densitometer |
| CN111272607A (en) * | 2018-12-05 | 2020-06-12 | 重庆雅讯电源技术有限公司 | Battery pack electrolyte density measuring device and method |
| CN116519536A (en) * | 2023-07-05 | 2023-08-01 | 中南大学 | Device and method for measuring specific gravity of liquid in pipeline |
| CN116519536B (en) * | 2023-07-05 | 2023-10-03 | 中南大学 | Device and method for measuring specific gravity of liquid in pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106680144A (en) | Automatic air exhausting, dirt removing and density detecting device of acid-circulation battery formation system pipeline | |
| CN105174402B (en) | A kind of automatic adding flocculant system settled for black water and its method | |
| CN207181204U (en) | A kind of ore pulp concentration meter based on gravimetric method | |
| CN206470149U (en) | Sour cycle battery is internalized into system pipeline and is vented decontamination device for detecting density automatically | |
| CN206778446U (en) | A kind of auto Resin regenerating unit | |
| CN109580755B (en) | System and method for online measurement and control of hydrogen peroxide concentration in fabric bleaching process | |
| CN103454129A (en) | On-line sodium analyzer | |
| CN203455306U (en) | Online sodium ion monitoring device | |
| CN206427990U (en) | Coating automatic filling device | |
| CN209247133U (en) | The water meter calibration of pure water can be recycled | |
| CN214600619U (en) | On-line spraying tank device | |
| CN208799805U (en) | A kind of automated fluid separation equipment | |
| CN209707435U (en) | A kind of glass electrode PH meter automatic Calibration and cleaning device | |
| CN209451779U (en) | A kind of liquid medicine device for formulating | |
| CN208459034U (en) | A kind of sanitary ceramics water-use efficiency experimental provision | |
| CN203909020U (en) | Online continuous concentration detection device for printing and dyeing processing solution | |
| CN210814753U (en) | Pipeline medicine adding device | |
| CN210037521U (en) | System for measuring density and pH value of slurry of desulfurization absorption tower | |
| CN205643288U (en) | Measurement device for thick liquid pH value in absorption tower | |
| CN214845201U (en) | Online quality control instrument for water quality | |
| CN206142812U (en) | Storage device of battery lead plaster and cream machine acidification and water | |
| CN206486371U (en) | A kind of sewage disposal system | |
| CN205773454U (en) | A kind of COD stably reaching standard tapping equipment | |
| CN217786983U (en) | Automatic detection device suitable for low concentration phosphate in seawater | |
| CN218171108U (en) | Liquid material metering device for preventing material leakage caused by signal transmission errors |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170517 |