CN103285618A - Extracting and separating control device, extracting system as well as extracting and separating control method - Google Patents
Extracting and separating control device, extracting system as well as extracting and separating control method Download PDFInfo
- Publication number
- CN103285618A CN103285618A CN2012100418174A CN201210041817A CN103285618A CN 103285618 A CN103285618 A CN 103285618A CN 2012100418174 A CN2012100418174 A CN 2012100418174A CN 201210041817 A CN201210041817 A CN 201210041817A CN 103285618 A CN103285618 A CN 103285618A
- Authority
- CN
- China
- Prior art keywords
- electrode
- measuring position
- linker
- signal
- valve
- 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.)
- Pending
Links
Images
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides an extracting and separating control device, an extracting system as well as an extracting and separating control method, wherein the extracting and separating control device comprises a first electrode, a second electrode and a controller, wherein the first electrode and the second electrode are opposite to each other, are both arranged above a lower material outlet of an extracting tower, and are used for detecting whether liquid at a first measurement position in the extracting tower can conduct electricity; the controller is respectively electrically connected with the first electrode and the second electrode, and when the controller detects that the first electrode and the second electrode are conducted, a valve close signal or a valve start signal is emitted to a control valve at the lower material outlet; and when the controller detects that the first electrode and the second electrode are disconnected from each other, a valve start signal or a valve close signal is emitted to the control valve of the lower material outlet. According to the extracting and separating control device, the error during the separating process is prevented effectively; moreover, the extracting and separating control device is simple in structure, and is convenient to use.
Description
Technical field
The present invention relates to chemical technology field, in particular to a kind of extract and separate control device, extracting system and extract and separate control method.
Background technology
In the Chemical Manufacture of prior art, the water in the separating and extracting tower and organic phase (non-conductive) substantially all are to observe operation by operating personnel's eyes.The feeding mouth of extraction tower is positioned at the middle part of extraction tower, extraction tower has two discharging openings, a water discharging opening, an organic phase discharging opening, in the general Chemical Manufacture, the density of organic phase is bigger than water, by the lower discharge port extraction, also there is the density of part organic phase littler than water, at this moment, then needs by the extraction of top discharge mouth.
In the practical operation, be provided with glass linker with the extraction tower internal communication at the outer wall of extraction tower, operating personnel are by the liquid-level interface in the sight glass linker, remove to judge the layering interfaces of water and organic phase by rule of thumb, controlling the by-pass valve control at lower discharge port place then closes or opens, to guarantee not having impurity in the extraction material (organic phase or water), namely can not contain water in the organic phase, aqueous phase can not contain organic phase.
Said method relatively relies on operating personnel's experience, and specifically, the color distortion of organic phase and water is less sometimes, layering interfaces is difficult for judging, like this, is easy to cause liquid-level interface control unstable, even can cause the extraction material defective sometimes, influence back process product quality.Simultaneously, need operating personnel's Real Time Observation also to make production cost increase.
Simultaneously, observing for the ease of eyes, generally all is to watch liquid-level interface with the glass linker, be subjected to environment for use and other factor affecting, the glass visor uses the damage of breaking easily through long-term, material can spray in case break, and is easy to cause security incident and environmental accident.
Summary of the invention
The present invention aims to provide a kind of extract and separate control device, extracting system and extract and separate control method, is prone to the problem of error with separation process in the solution prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of extract and separate control device, having comprised: first electrode that is oppositely arranged and second electrode, all be arranged on the top of the lower discharge port of extraction tower, whether conduct electricity for detection of the liquid of first measuring position in the extraction tower; Controller, be electrically connected respectively with first electrode and second electrode, when controller detects first electrode and second electrode conduction, send valve-off signal or Open valve signal to the by-pass valve control at lower discharge port place, when controller detects first electrode and the disconnection of second electrode, send Open valve signal or valve-off signal to the by-pass valve control of lower discharge port.
Further, extract and separate control device of the present invention also comprises: conductivity meter, and first electrode and second electrode are the measurement electrode of conductivity meter, the output of conductivity meter is connected with controller.
Further, extract and separate control device of the present invention also comprises: the third electrode that is oppositely arranged and the 4th electrode, third electrode and the 4th electrode are electrically connected with controller respectively, whether the liquid for detection of second measuring position in the extraction tower conducts electricity, when controller detects third electrode and the 4th electrode conduction, send alarm signal and send the valve-off signal simultaneously to the by-pass valve control at lower discharge port place, wherein, second measuring position is lower than first measuring position.
Further, the lower discharge port top is provided with the linker with the extraction tower internal communication, linker comprises first linker and second linker in parallel, first linker is positioned at the inboard of second linker, first linker and second linker have common entrance and exit, the entrance and exit place is equipped with the linker valve, and first electrode and second electrode are arranged on first linker.
Further, third electrode and the 4th electrode are arranged on first linker.
Further, extract and separate control device of the present invention also comprises: display unit is connected with controller.
According to a further aspect in the invention, provide a kind of extracting system, comprised extraction tower, be connected with above-mentioned extract and separate control device on the extraction tower.
According to a further aspect in the invention, provide a kind of extract and separate control method, may further comprise the steps: whether the liquid that detects first measuring position in the extraction tower conducts electricity; When controller detects the liquid conduction of first measuring position, send valve-off signal or Open valve signal to the by-pass valve control at the lower discharge port place of extraction tower, controller detects the liquid of first measuring position when non-conductive, sends Open valve signal or valve-off signal to the by-pass valve control of lower discharge port.
Further, extract and separate control method of the present invention is further comprising the steps of: whether the liquid that detects second measuring position in the extraction tower conducts electricity; When controller detects the liquid conduction of second measuring position, send alarm signal and send the valve-off signal simultaneously to the by-pass valve control at lower discharge port place, wherein, second measuring position is lower than first measuring position.
In technical scheme of the present invention, the extract and separate control device comprises: first electrode that is oppositely arranged and second electrode and the controller that is electrically connected respectively with first electrode and second electrode.Whether first electrode and second electrode all are arranged on the top of the lower discharge port of extraction tower, conduct electricity for detection of the liquid of first measuring position in the extraction tower.
In practical operation, along with the mixture of water and organic phase constantly enters in the extraction tower, because the density difference, when water was positioned at the top of organic phase, organic phase was from the continuous extraction of lower discharge port, and water constantly overflows from the top discharge mouth.Water and organic phase are mixed liquid level position and are constantly changed in extraction tower, when this mixing liquid level drops to when reaching first measuring position, just during the installation site of first electrode and/or second electrode, the liquid conduction of first measuring position, controller detects first electrode and second electrode conduction, at this moment, send the valve-off signal to the by-pass valve control at lower discharge port place, lower discharge port is the extraction material no longer.When the mixing liquid level was higher than first measuring position, this moment, first measuring position was organic phase, and was non-conductive, controller detects first electrode and second electrode disconnects, at this moment, send the Open valve signal to the by-pass valve control of lower discharge port, lower discharge port carries out the material extraction again like this.
When organic phase place during in the top of water, water is from the continuous extraction of lower discharge port, and organic phase is constantly overflowed from the top discharge mouth.Water and organic phase are mixed liquid level position and are constantly changed in extraction tower, when this mixing liquid level drops to below first measuring position, when just being lower than the installation site of first electrode and/or second electrode, the liquid of first measuring position is non-conductive, controller detects first electrode and second electrode disconnects, at this moment, send the valve-off signal to the by-pass valve control at lower discharge port place, lower discharge port is the extraction material no longer.When the mixing liquid level was higher than first measuring position, this moment, first measuring position was water, conduction, controller detects first electrode and second electrode conduction, at this moment, send the Open valve signal to the by-pass valve control of lower discharge port, lower discharge port carries out the material extraction again like this.
The technical scheme of application invention, whether controller conducts electricity by the liquid that detects first measuring position and then sends signal to by-pass valve control, and with the unlatching or the shutoff operation that carry out by-pass valve control, the present invention need not manually-operated, precise control, the error of having avoided separation process to occur effectively.Simultaneously, extract and separate control device of the present invention does not rely on linker, and linker can be set, and has so avoided linker to damage the accident that causes yet.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation according to the embodiment of extract and separate control device of the present invention; And
Fig. 2 shows the schematic flow sheet according to the embodiment of extract and separate control method of the present invention.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1, the extract and separate control device of present embodiment comprises: first electrode 11 that is oppositely arranged and second electrode 12 and the controller 30 that is electrically connected respectively with first electrode 11 and second electrode 12.Whether first electrode 11 and second electrode 12 all are arranged on the top of the lower discharge port 21 of extraction tower 20, conduct electricity for detection of the liquid of first measuring position in the extraction tower 20.First electrode 11 and second electrode 12 can be positioned at same height and be arranged side by side, also can be to be positioned at different height upper and lower settings, first measuring position is highly identical with this when first electrode 11 is positioned at sustained height with second electrode 12, and first measuring position is identical with the height of the electrode that is positioned at the below when first electrode 11 is positioned at different height with second electrode 12.The height of first measuring position can be adjusted according to actual needs.The controller 30 preferred dcs of using.
In practical operation, along with the mixture of water and organic phase constantly enters in the extraction tower 20, because the density difference, when water was positioned at the top of organic phase, organic phase was from lower discharge port 21 continuous extraction, and water constantly overflows from the top discharge mouth.Water and organic phase are mixed liquid level position and are constantly changed in extraction tower, when this mixing liquid level drops to when reaching first measuring position, just during the installation site of first electrode 11 and/or second electrode 12, the liquid conduction of first measuring position, controller detects first electrode 11 and 12 conductings of second electrode, at this moment, send the valve-off signal to the by-pass valve control 22 at lower discharge port place, lower discharge port 21 is the extraction material no longer.When the mixing liquid level is higher than first measuring position, this moment, first measuring position was organic phase, non-conductive, controller 30 detects first electrode 11 and second electrode 12 disconnects, at this moment, send the Open valve signal to the by-pass valve control 22 of lower discharge port 21, lower discharge port 21 carries out the material extraction again like this.
When organic phase place during in the top of water, water is from lower discharge port 21 continuous extraction, and organic phase is constantly overflowed from the top discharge mouth.Water and organic phase are mixed liquid level position and are constantly changed in extraction tower, when this mixing liquid level drops to below first measuring position, when just being lower than the installation site of first electrode 11 and/or second electrode 12, the liquid of first measuring position is non-conductive, controller detects first electrode 11 and second electrode 12 disconnects, at this moment, send the valve-off signal to the by-pass valve control 22 at lower discharge port place, lower discharge port 21 is the extraction material no longer.When the mixing liquid level was higher than first measuring position, this moment, first measuring position was water, conduction, controller detects first electrode 11 and 12 conductings of second electrode, at this moment, send the Open valve signal to the by-pass valve control 22 of lower discharge port 21, lower discharge port 21 carries out the material extraction again like this.
Use the technical scheme of present embodiment, whether controller 30 conducts electricity by the liquid that detects first measuring position and then sends signal to by-pass valve control 22, with unlatching or the shutoff operation that carries out by-pass valve control 22, present embodiment need not manually-operated, precise control, the error of having avoided separation process to occur effectively.
In a kind of preferred embodiment, be with the difference of above-described embodiment, whether the liquid that adopts conductivity meter to detect first measuring position in the extraction tower 20 conducts electricity, the measurement electrode of conductivity meter replaces first electrode 11 and second electrode 12, the output of conductivity meter is connected with controller 30, when the liquid conduction of first measuring position, conductivity meter can be issued controller with the conductivity value signal of liquid, send the valve-off signal when controller 30 receives the conductivity value signal, (when conductivity value is zero) controller 30 sends the Open valve signal when the conductivity value blackout.
The conductivity meter test signal is analog signals, can measure medium conductivity numerical value, can set the electrical conductivity restriction by controller, conductivity values contrast with practical measurement, send corresponding adjustment order then, send Open valve signal or valve-off signal to the by-pass valve control of described lower discharge port 21.
Preferably, the extract and separate control device also comprises: the third electrode 41 that is oppositely arranged and the 4th electrode 42, third electrode 41 and the 4th electrode 42 are electrically connected with controller 30 respectively, whether the liquid for detection of second measuring position in the extraction tower 20 conducts electricity, wherein, second measuring position is lower than first measuring position.Third electrode 41 and the 4th electrode 42 are the warning electrode of extract and separate control device, only when going wrong, first electrode 11 and second electrode 12 just work, when first electrode 11 and second electrode 12 go wrong, water and organic phase are mixed liquid level position decline and are arrived continuation decline behind first measuring position, when dropping to second measuring position, controller 30 detects third electrode 41 and 42 conductings of the 4th electrode, at this moment, send alarm signal and send the valve-off signal simultaneously to the by-pass valve control 22 at lower discharge port 21 places.
Preferably, as shown in Figure 1, lower discharge port 21 tops are provided with the linker with extraction tower 20 internal communication, and linker comprises first linker 51 and second linker 52, first linker 51 is used for the installation of the first, second, third and the 4th electrode, is convenient to operating personnel and observes.First linker 51 and second linker 52 can be connected to respectively on the extraction tower 20, and perhaps preferably, first linker 51 and second linker 52 are connected in parallel, and first linker 51 and second linker 52 have common entrance and exit.Further preferably, first linker 51 is positioned at the inboard of second linker 52, and first linker 51 and second linker 52 have common entrance and exit place and be equipped with the linker valve, and first electrode 11 and second electrode 12 are arranged on first linker 51.Preferably, second linker 52 is provided with two adpting flange 52a, observation tube between two adpting flange 52a is made by transparent material, such as glass, being convenient to operating personnel observes, the observation tube that is arranged so that of adpting flange 52a can be changed according to operating position, thereby has avoided long-time use aged deterioration to cause the accident like this.
Preferably, the extract and separate control device also comprises the display unit 60 that is connected with controller 30, and this display unit 60 is used for showing the state of by-pass valve control 22, also can be used for display alarm information.
The present invention also provides a kind of extracting system, comprises extraction tower, is connected with above-mentioned extract and separate control device on the extraction tower.Extracting system automaticity height of the present invention, the separation error is little, the separative efficiency height.
The present invention also provides a kind of extract and separate control method, according to the embodiment of extract and separate control method of the present invention, as shown in Figure 2, may further comprise the steps:
S10: whether the liquid that detects first measuring position in the extraction tower 20 conducts electricity.Preferably, can detect by two electrodes or conductivity meter.
S20: when controller 30 detects the liquid conduction of first measuring position, send valve-off signal or Open valve signal to the by-pass valve control 22 at lower discharge port 21 places of extraction tower 20, controller 30 detects the liquid of first measuring position when non-conductive, sends Open valve signal or valve-off signal to the by-pass valve control of lower discharge port 21.The signal type that controller 30 sends to by-pass valve control 22 (Open valve signal or valve-off information) is specifically determined by the density of the mixing material in the extraction tower.Particularly, when organic phase density was big, the liquid conduction of first measuring position then controller 30 sent the valve-off signal, and the non-conductive then controller 30 of the liquid of first measuring position sends the Open valve signal.And operation is just in time opposite when water density is big, does not repeat them here.
Preferably, the extract and separate control method is further comprising the steps of:
Whether the liquid that detects second measuring position in the extraction tower 20 conducts electricity; When controller 30 detects the liquid conduction of second measuring position, send alarm signal and send the valve-off signal simultaneously to the by-pass valve control 22 at lower discharge port 21 places, wherein, second measuring position is lower than first measuring position.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an extract and separate control device is characterized in that, comprising:
Whether first electrode (11) that is oppositely arranged and second electrode (12) all are arranged on the top of the lower discharge port (21) of extraction tower (20), conduct electricity for detection of the liquid of first measuring position in the described extraction tower (20);
Controller (30), be electrically connected respectively with described first electrode (11) and second electrode (12), when described controller (30) detects described first electrode (11) and second electrode (12) conducting, send the by-pass valve control (22) that valve-off signal or Open valve signal to described lower discharge port (21) is located, when described controller (30) detects described first electrode (11) and second electrode (12) disconnection, send Open valve signal or valve-off signal to the by-pass valve control of described lower discharge port (21).
2. extract and separate control device according to claim 1, it is characterized in that, also comprise: conductivity meter, described first electrode (11) and second electrode (12) they are the measurement electrode of described conductivity meter, the output of described conductivity meter is connected with described controller (30).
3. extract and separate control device according to claim 1 and 2 is characterized in that, also comprises:
The third electrode that is oppositely arranged (41) and the 4th electrode (42), described third electrode (41) and the 4th electrode (42) are electrically connected with described controller (30) respectively, whether the liquid for detection of second measuring position in the described extraction tower (20) conducts electricity, when described controller (30) detects described third electrode (41) and the 4th electrode (42) conducting, send alarm signal and send the by-pass valve control (22) that described valve-off signal to described lower discharge port (21) is located simultaneously, wherein, described second measuring position is lower than described first measuring position.
4. extract and separate control device according to claim 3, it is characterized in that, described lower discharge port (21) top is provided with the linker with described extraction tower (20) internal communication, described linker comprises first linker (51) and second linker (52) in parallel, described first linker (51) is positioned at the inboard of described second linker (52), described first linker (51) and second linker (52) have common entrance and exit, described entrance and exit place is equipped with the linker valve, and described first electrode (11) and second electrode (12) are arranged on described first linker (51).
5. extract and separate control device according to claim 4 is characterized in that, described third electrode (41) and the 4th electrode (42) are arranged on described first linker (51).
6. extract and separate control device according to claim 1 is characterized in that, also comprises: display unit (60) is connected with described controller (30).
7. an extracting system comprises extraction tower (20), it is characterized in that, described extraction tower is connected with the extract and separate control device on (20), and described extract and separate control device is each described extract and separate control device in the claim 1 to 6.
8. an extract and separate control method is characterized in that, may further comprise the steps:
Whether the liquid that detects first measuring position in the extraction tower (20) conducts electricity;
When controller (30) detects the liquid conduction of described first measuring position, send the by-pass valve control (22) that valve-off signal or Open valve signal are located to the lower discharge port (21) of extraction tower (20), described controller (30) detects
When the liquid of described first measuring position is non-conductive, send Open valve signal or valve-off signal to the by-pass valve control of described lower discharge port (21).
9. extract and separate control method according to claim 8 is characterized in that, and is further comprising the steps of:
Whether the liquid that detects second measuring position in the described extraction tower (20) conducts electricity;
When controller (30) detects the liquid conduction of described second measuring position, send alarm signal and send the by-pass valve control (22) that described valve-off signal to described lower discharge port (21) is located simultaneously, wherein, described second measuring position is lower than described first measuring position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100418174A CN103285618A (en) | 2012-02-22 | 2012-02-22 | Extracting and separating control device, extracting system as well as extracting and separating control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100418174A CN103285618A (en) | 2012-02-22 | 2012-02-22 | Extracting and separating control device, extracting system as well as extracting and separating control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103285618A true CN103285618A (en) | 2013-09-11 |
Family
ID=49087468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100418174A Pending CN103285618A (en) | 2012-02-22 | 2012-02-22 | Extracting and separating control device, extracting system as well as extracting and separating control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103285618A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888493A (en) * | 2015-06-05 | 2015-09-09 | 海正药业(杭州)有限公司 | Device for realizing liquid-liquid extraction separation self-control through electric conduction and method thereof |
| CN114426864A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Continuously operated furfural extraction experimental device |
| CN114426863A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Liquid interface control device and method for furfural extraction tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201871254U (en) * | 2010-11-12 | 2011-06-22 | 西安市产品质量监督检验所 | Device for automatic control of separation of water and water-soluble impurities from liquefied vinyl chloride |
| CN202446851U (en) * | 2012-02-22 | 2012-09-26 | 江苏圣奥化学科技有限公司 | Extraction separation control device and extraction system |
-
2012
- 2012-02-22 CN CN2012100418174A patent/CN103285618A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201871254U (en) * | 2010-11-12 | 2011-06-22 | 西安市产品质量监督检验所 | Device for automatic control of separation of water and water-soluble impurities from liquefied vinyl chloride |
| CN202446851U (en) * | 2012-02-22 | 2012-09-26 | 江苏圣奥化学科技有限公司 | Extraction separation control device and extraction system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888493A (en) * | 2015-06-05 | 2015-09-09 | 海正药业(杭州)有限公司 | Device for realizing liquid-liquid extraction separation self-control through electric conduction and method thereof |
| CN114426864A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Continuously operated furfural extraction experimental device |
| CN114426863A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Liquid interface control device and method for furfural extraction tower |
| CN114426864B (en) * | 2020-10-29 | 2023-07-18 | 中国石油化工股份有限公司 | Continuous operation's furfural extraction experimental apparatus |
| CN114426863B (en) * | 2020-10-29 | 2023-10-20 | 中国石油化工股份有限公司 | Furfural extraction tower liquid interface control device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210322992U (en) | Intelligent sewage sampling and detecting device | |
| CN104133149B (en) | A kind of voltage acquisition line Beam Detector | |
| CN103285618A (en) | Extracting and separating control device, extracting system as well as extracting and separating control method | |
| CN204973142U (en) | Oil phase aqueous phase separator | |
| CN206430867U (en) | A kind of gas station's seepage safety monitoring assembly | |
| CN209910920U (en) | Device for detecting battery leakage | |
| CN106199439A (en) | Battery testing security protection machine | |
| CN202446851U (en) | Extraction separation control device and extraction system | |
| CN105469570A (en) | Intelligent gas meter and meter reading monitoring system based on Internet of Things | |
| CN102183668B (en) | Heavy metal online analyzer | |
| CN108828179A (en) | A kind of expansible miniature water quality on-line monitoring system of integration | |
| CN205269425U (en) | Detecting system of reverse osmosis water purification machine | |
| CN107247096A (en) | A kind of online lithium concentration analysis meter of multichannel | |
| CN203904721U (en) | A washing apparatus | |
| CN203625095U (en) | Secondary water supply quality monitoring and purifying device for large-volume water tank | |
| CN202583056U (en) | Bilge water monitoring device | |
| CN209150745U (en) | A kind of battery group protective device | |
| CN209102481U (en) | A kind of sodium table status monitoring device | |
| CN207662875U (en) | A kind of dry type spy tail-gas processing equipment exhaust outlet poison gas concentration monitoring device | |
| CN215479691U (en) | Aircraft fuel deposits discharges instrument | |
| CN205693416U (en) | A kind of lithium battery automatic charge device | |
| CN109085318A (en) | A kind of urban duct drinking water quality monitoring anticorrosion lucite tube | |
| CN208279422U (en) | A kind of Intelligent running water filtering and sterilizing device | |
| CN201445875U (en) | Gas filter with residual liquid alarm function | |
| CN208621191U (en) | A kind of 35KV Unmanned Transformer Place switch mechanism box low-temperature warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130911 |