CN107754492A - A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector - Google Patents
A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector Download PDFInfo
- Publication number
- CN107754492A CN107754492A CN201610688045.1A CN201610688045A CN107754492A CN 107754492 A CN107754492 A CN 107754492A CN 201610688045 A CN201610688045 A CN 201610688045A CN 107754492 A CN107754492 A CN 107754492A
- Authority
- CN
- China
- Prior art keywords
- pressure
- deduster
- differential
- air chamber
- operting
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 239000000428 dust Substances 0.000 title claims abstract description 26
- 230000008676 import Effects 0.000 claims abstract description 14
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 6
- 239000004576 sand Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
Abstract
The invention discloses a kind of pressure differential detection method for Zhi Sha buildings pulse bag type dust collector, including:Detect the operting differential pressure value of deduster the import and export pipeline;Operting differential pressure value is transferred to controller, controller judges whether operting differential pressure value meets default pressure differential;If so, then show deduster normal work, if it is not, then showing deduster operation irregularity, it is necessary to be repaired to deduster.The filter bag damage of deduster or blocking, the change of inlet/outlet pipe pressure difference can be caused, therefore be compared by operting differential pressure value and pressure differential and may determine that whether filter bag is damaged or blocks.The invention also discloses a kind of detection means for being used to realize the pressure differential detection method of above-mentioned Zhi Sha buildings pulse bag type dust collector, including:For detecting the sensor of deduster the import and export pipeline pressure difference;Judge whether the pressure difference that sensor detects meets preset pressure condition, and export the controller of judged result, sensor connects with controller.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of pressure for Zhi Sha buildings pulse bag type dust collector
Difference detection method and device.
Background technology
With the increasingly depleted of natural resources, the natural sand based on river sand can not meet that growing concrete is used
The demand of amount, Machine-made Sand replace river sand at home and abroad as a kind of trend of Sustained Development for Concrete Industry.Especially exist
The area of water resources shortage, dry method mechanism sand have irreplaceable status and advantage.
But as requirement of the society to environment is increasingly increased, the feature of environmental protection of dry method mechanism sand equipment is proposed higher
Requirement, wherein Zhi Sha buildings are effective equipment of sand processed, and dust is generally collected in Zhi Sha buildings by pulse bag type dust collector, therefore
Whether pulse bag type dust collector normally works will directly affect the quality of environment, wherein pulse bag type dust collector inlet and outlet
Pressure difference is its important running parameter.
Therefore how effectively the pressure difference of Zhi Sha buildings pulse bag type dust collector to be detected, is those skilled in the art's urgency
The technical problem that need to be solved.
The content of the invention
, can it is an object of the invention to provide a kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector
Effectively to be detected to the pressure difference of Zhi Sha buildings pulse bag type dust collector.
In order to solve the above technical problems, the invention provides following technical scheme:
A kind of pressure differential detection method for Zhi Sha buildings pulse bag type dust collector, including:
Detect the operting differential pressure value of deduster the import and export pipeline;
Judge whether the operting differential pressure value meets default pressure differential;
If so, then show the deduster normal work;
If it is not, then show the deduster operation irregularity.
Preferably, when the deduster is more air chamber dedusters, obtaining the default pressure differential includes:
The whole air chamber of more air chamber dedusters is closed, detection obtains pressure difference P1;
One of air chamber of more air chamber dedusters is communicated with export pipeline, remaining air chamber is closed, detects
To pressure difference P2;
After the whole air chambers for opening more air chamber dedusters, air chamber described in orderly close-down, the pressure difference detected is made even
Average P3,
It is described to judge whether the operting differential pressure value meets default pressure differential and include:
When the operting differential pressure value is more than P1, represent that the filter bag of more air chamber dedusters all blocks;
When the operting differential pressure value is less than P2, the filter bag damage of more air chamber dedusters is represented;
When the operting differential pressure value is not less than P3 and is less than P1, represent that the filter bag of more air chamber deduster parts blocks up
Plug;
When the operting differential pressure value is more than P2 and is less than P3, represent that more air chamber dedusters are working properly.
A kind of device for being used to realize the pressure differential detection method of above-mentioned Zhi Sha buildings pulse bag type dust collector, including:
For detecting the sensor of deduster the import and export pipeline pressure difference;
Judge whether the pressure difference that the sensor detects meets preset pressure condition, and export the control of judged result
Device processed, the sensor connect with the controller.
Preferably, in addition to when the pressure difference does not meet the pressure differential, the warning device of alarm signal is sent.
Preferably, the sensor is micro-pressure sensor.
Preferably, in addition to it is used for the display for showing the judged result, the display connects with the controller.
Preferably, the warning device includes buzzer.
Preferably, the warning device includes the reminding module for sending voice message.
Compared with prior art, above-mentioned technical proposal has advantages below:
A kind of pressure differential detection method for Zhi Sha buildings pulse bag type dust collector provided by the present invention, including:Detection removes
The operting differential pressure value of dirt device the import and export pipeline;Judge whether operting differential pressure value meets default pressure differential;If so, then show to remove
Dirt device normal work, if it is not, then showing deduster operation irregularity.The work pressure of deduster the import and export pipeline is detected by sensor
Difference, operting differential pressure is then transferred to controller, controller is compared according to default pressure differential and operting differential pressure, if work
Meet default pressure differential as pressure difference, then show that deduster is working properly;If operting differential pressure does not meet default pressure differential,
Then show deduster operation irregularity, it is necessary to be repaired to deduster.Wherein default pressure differential is in the normal work of deduster
As when the pressure differential that detects.Because the filter bag damage of deduster or blocking can all cause the change of deduster inlet/outlet pipe pressure difference
Change, therefore may determine that whether filter bag is damaged or blocks by the comparison of pressure difference.
It is used to realize the above-mentioned pressure differential detection method for Zhi Sha buildings pulse bag type dust collector present invention also offers a kind of
Detection means, including:For detecting the sensor of deduster the import and export pipeline pressure difference;Judging the pressure difference that sensor detects is
It is no to meet preset pressure condition, and the controller of judged result is exported, sensor connects with controller.Wherein sensor need and
The pressure difference detected is transferred to controller by deduster inlet and outlet connection, sensor, and controller judges the pressure that sensor detects
Whether difference meets default pressure differential in the controller, and then controller can will determine that result is exported, so as to the people that works
Member understands the working condition of current deduster, if deduster operation irregularity, for example, the filter bag blocking or damaged of deduster, sensing
The pressure difference that device detects does not meet default pressure differential necessarily, therefore staff can understand deduster by pressure difference
Filter bag whether block or damaged, the filter bag that wherein controller can directly export deduster is the judgement of blocking or breakage
As a result.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of technical scheme of the invention or of the prior art
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are some of the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
A kind of pressure difference for Zhi Sha buildings pulse bag type dust collector that Fig. 1 is provided for a kind of embodiment of the present invention
The flow chart of detection method;
A kind of pressure difference for Zhi Sha buildings pulse bag type dust collector that Fig. 2 is provided for a kind of embodiment of the present invention
The structural representation of detection means.
Reference is as follows:
1 is controller, and 2 be sensor, and 3 be deduster, and 4 be admission line, and 5 be outlet pipe.
Embodiment
On the basis of the studies above, the embodiments of the invention provide a kind of for Zhi Sha buildings pulse bag type dust collector
Pressure differential detection method, the operting differential pressure of deduster the import and export pipeline is detected by sensor, operting differential pressure is then transferred to control
Device processed, controller are compared according to default pressure differential and operting differential pressure, if operting differential pressure meets default pressure differential,
Then show that deduster is working properly;If operting differential pressure does not meet default pressure differential, show deduster operation irregularity, it is necessary to
Deduster is repaired, wherein default pressure differential is the pressure differential detected in deduster normal work, such as
The filter bag damage of deduster blocks the change that can all cause deduster inlet/outlet pipe pressure difference, therefore detected by sensor
Operting differential pressure value and default pressure differential are compared, it can be determined that whether filter bag is damaged, blocks either normal work.
In order that the above objects, features and advantages of the present invention can become apparent it is understandable, below in conjunction with the accompanying drawings to this hair
Bright embodiment is described in detail.
Detail is elaborated in the following description in order to fully understand the present invention.But the present invention can with it is a variety of not
Other manner described here is same as to implement, those skilled in the art can do class in the case of without prejudice to intension of the present invention
Like popularization.Therefore the present invention is not limited by following public embodiment.
Fig. 1 is refer to, Fig. 1 removes for one kind that a kind of embodiment of the present invention is provided for Zhi Sha buildings impulse bag
The flow chart of the pressure differential detection method of dirt device.
A kind of embodiment of the present invention provides a kind of pressure differential detection for Zhi Sha buildings pulse bag type dust collector
Method, comprise the following steps:
S1:Detect the operting differential pressure value of deduster the import and export pipeline.
S2:Judge whether operting differential pressure value meets default pressure differential;If so, then show deduster normal work;If
It is no, then show deduster operation irregularity.
In the present embodiment, the operting differential pressure of deduster the import and export pipeline can be detected by sensor, then by work
Pressure difference is transferred to controller, and controller is compared according to default pressure differential and operting differential pressure, if operting differential pressure meet it is pre-
If pressure differential, then show that deduster is working properly;If operting differential pressure does not meet default pressure differential, show deduster
Operation irregularity to deduster, it is necessary to repair, wherein default pressure differential detects in deduster normal work
Pressure differential.Because the filter bag damage of deduster or blocking can all cause the change of deduster the import and export pipeline pressure difference, thus it is logical
The comparison of overpressure difference may determine that whether filter bag is damaged or blocks.
Further, when deduster is more air chamber dedusters, obtaining default pressure differential includes:More air chambers are closed to remove
Whole air chambers of dirt device, detection obtain pressure difference P1;One of air chamber of more air chamber dedusters is communicated with export pipeline, closed
Remaining air chamber is closed, detection obtains pressure difference P2;After the whole air chambers for opening more air chamber dedusters, orderly close-down air chamber, detection
To pressure difference average P3, such as more air chamber dedusters have 3 air chambers, first open whole air chambers, are then shut off wherein
One air chamber, a pressure difference is measured, then turn off an air chamber, measured second pressure difference, finally close remaining one
Individual air chamber, measures last pressure difference, then takes the average value of these three pressure differences.
Judge whether operting differential pressure meets default pressure differential and include:When operting differential pressure value is more than P1, more gas are represented
The filter bag of room deduster all blocks, and when operting differential pressure value is less than P2, represents the filter bag damage of more air chamber dedusters, works as work
When pressure difference is not less than P3 and is less than P1, represent that more air chamber dedusters filter bag of some blocks, when the operting differential pressure value
When more than P2 and being less than P3, represent that more air chamber dedusters are working properly.Therefore by detecting in running order deduster
Operting differential pressure value, it can be determined that whether the filter bag of deduster is damaged or blocks, and is easy in time change filter bag or clearly
Ash, so as to improve cleaning efficiency.
Fig. 2 is refer to, Fig. 2 removes for one kind that a kind of embodiment of the present invention is provided for Zhi Sha buildings impulse bag
The structural representation of the pressure test device of dirt device.
The embodiment of the present invention additionally provides a kind of pressure differential detection side for being used to realize above-mentioned Zhi Sha buildings pulse bag type dust collector
The detection means of method, including:For detecting the sensor 2 of the import and export pipeline pressure difference of deduster 3;Judge what sensor 2 detected
Whether pressure difference meets preset pressure condition, and exports the controller 1 of judged result, and sensor 2 and controller 1 connect.
In the present embodiment, sensor 2 needs to connect with the admission line 4 of deduster 3 and outlet pipe 5, and sensor 2 will
The pressure difference detected is transferred to controller 1, and controller 1 judges whether the pressure difference that sensor 2 detects meets and is preset in controller 1
In pressure differential, then controller 1 can will determine that result is exported, so that staff understands the work of current deduster 3
Make situation, if the operation irregularity of deduster 3, for example, the filter bag blocking or damaged of deduster 3, the pressure difference that sensor 2 detects
Default pressure differential is not met necessarily, therefore staff can understand whether the filter bag of deduster 3 blocks by pressure difference
Or it is damaged, the filter bag that wherein controller 1 can directly export deduster 3 is the judged result of blocking or breakage.
In order to remind staff's deduster 3 to break down in time, pressure test device that the present embodiment is provided also wraps
Include the warning device for when pressure difference does not meet pressure differential, sending alarm signal.
Wherein, sensor 2 is preferably micro-pressure sensor 2 to improve accuracy of detection.
Judged result can be intuitively observed for the ease of staff, the pressure test device that the present embodiment is provided,
Also include being used for the display for showing judged result, display and controller 1 connect.
Further, warning device includes buzzer.When 3 operation irregularity of deduster, can be carried in time by buzzer
The staff that wakes up safeguards to deduster 3, to improve dust removing effects and efficiency of dust collection.
Further, warning device includes the reminding module for sending voice message.When the filter bag damage of deduster 3,
The voice of filter bag damage can be sent by reminding module, when filter bag blocks, reminding module can send the language of filter bag blocking
Sound.Therefore it can make staff that the filter bag situation whether working properly of deduster 3 be well understood.
The pressure differential detection method to a kind of Zhi Sha buildings pulse bag type dust collector provided by the present invention and device are carried out above
It is discussed in detail.Specific case used herein is set forth to the principle and embodiment of the present invention, above example
Explanation be only intended to help understand the present invention core concept.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and repaiied
Decorations are also fallen into the protection domain of the claims in the present invention.
Claims (8)
- A kind of 1. pressure differential detection method for Zhi Sha buildings pulse bag type dust collector, it is characterised in that including:Detect the operting differential pressure value of deduster the import and export pipeline;Judge whether the operting differential pressure value meets default pressure differential;If so, then show the deduster normal work;If it is not, then show the deduster operation irregularity.
- 2. pressure differential detection method according to claim 1, it is characterised in that when the deduster is more air chamber dedusters When, obtaining the default pressure differential includes:Whole air chambers of more air chamber dedusters are closed, detection obtains pressure difference P1;One of air chamber of more air chamber dedusters is communicated with export pipeline, the remaining air chamber is closed, detects To pressure difference P2;After the whole air chambers for opening more air chamber dedusters, air chamber described in orderly close-down, the pressure difference detected is averaged P3,It is described to judge whether the operting differential pressure value meets default pressure differential and include:When the operting differential pressure value is more than P1, represent that the filter bag of more air chamber dedusters all blocks;When the operting differential pressure value is less than P2, the filter bag damage of more air chamber dedusters is represented;When the operting differential pressure value is not less than P3 and is less than P1, represent that the filter bag of more air chamber deduster parts blocks;When the operting differential pressure value is more than P2 and is less than P3, represent that more air chamber dedusters are working properly.
- A kind of 3. pressure test device for Zhi Sha buildings pulse bag type dust collector, it is characterised in that including:For detecting the sensor of deduster the import and export pipeline pressure difference;Judge whether the pressure difference that the sensor detects meets preset pressure condition, and export the control of judged result Device, the sensor connect with the controller.
- 4. pressure test device according to claim 3, it is characterised in that also include when the pressure difference does not meet the pressure During poor condition, the warning device of alarm signal is sent.
- 5. pressure test device according to claim 4, it is characterised in that the sensor is micro-pressure sensor.
- 6. the pressure test device according to claim 4 or 5, it is characterised in that also include being used to show the judgement knot The display of fruit, the display connect with the controller.
- 7. pressure test device according to claim 6, it is characterised in that the warning device includes buzzer.
- 8. pressure test device according to claim 6, it is characterised in that the warning device includes sending voice message Reminding module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610688045.1A CN107754492A (en) | 2016-08-18 | 2016-08-18 | A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610688045.1A CN107754492A (en) | 2016-08-18 | 2016-08-18 | A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107754492A true CN107754492A (en) | 2018-03-06 |
Family
ID=61262865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610688045.1A Pending CN107754492A (en) | 2016-08-18 | 2016-08-18 | A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107754492A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108855942A (en) * | 2018-06-22 | 2018-11-23 | 河南中烟工业有限责任公司 | A kind of cut tobacco flexibility winnowing machine air quantity controller and method |
CN110124403A (en) * | 2019-06-13 | 2019-08-16 | 苏州协昌环保科技股份有限公司 | Pulse bag type dust collector broken bag intelligent detecting method |
CN111905488A (en) * | 2020-08-04 | 2020-11-10 | 中国科学院广州能源研究所 | Cloth bag dust removal device and control method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0731819A (en) * | 1993-07-23 | 1995-02-03 | Nippon Steel Corp | Capacity monitor device for bag filter dust collector and method therefor |
US20080271607A1 (en) * | 2007-05-03 | 2008-11-06 | Mott Corporation | Plenum based high pressure blowback gas delivery system in a continuous process flow filtration system |
CN201482355U (en) * | 2009-07-28 | 2010-05-26 | 合肥水泥研究设计院 | Ash removing device used for box-type pulse bag deduster |
CN202442851U (en) * | 2012-02-24 | 2012-09-19 | 驻马店市龙山通用机械有限公司 | Sub chamber pressure difference filter bag leakage detecting device of bag type dust collector |
US20130312616A1 (en) * | 2011-04-15 | 2013-11-28 | Hitachi Construction Machinery Co., Ltd. | Exhaust purification system for working machine |
-
2016
- 2016-08-18 CN CN201610688045.1A patent/CN107754492A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0731819A (en) * | 1993-07-23 | 1995-02-03 | Nippon Steel Corp | Capacity monitor device for bag filter dust collector and method therefor |
US20080271607A1 (en) * | 2007-05-03 | 2008-11-06 | Mott Corporation | Plenum based high pressure blowback gas delivery system in a continuous process flow filtration system |
CN201482355U (en) * | 2009-07-28 | 2010-05-26 | 合肥水泥研究设计院 | Ash removing device used for box-type pulse bag deduster |
US20130312616A1 (en) * | 2011-04-15 | 2013-11-28 | Hitachi Construction Machinery Co., Ltd. | Exhaust purification system for working machine |
CN202442851U (en) * | 2012-02-24 | 2012-09-19 | 驻马店市龙山通用机械有限公司 | Sub chamber pressure difference filter bag leakage detecting device of bag type dust collector |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108855942A (en) * | 2018-06-22 | 2018-11-23 | 河南中烟工业有限责任公司 | A kind of cut tobacco flexibility winnowing machine air quantity controller and method |
CN110124403A (en) * | 2019-06-13 | 2019-08-16 | 苏州协昌环保科技股份有限公司 | Pulse bag type dust collector broken bag intelligent detecting method |
CN111905488A (en) * | 2020-08-04 | 2020-11-10 | 中国科学院广州能源研究所 | Cloth bag dust removal device and control method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107754492A (en) | A kind of pressure differential detection method and device for Zhi Sha buildings pulse bag type dust collector | |
CN105466143B (en) | The detection method and system of a kind of refrigerator | |
CN204961119U (en) | Air cleaner , air filter detecting system and vehicle | |
CN103759907A (en) | EGR pipeline fault detection method | |
CN108916663B (en) | Municipal water supply pipe network monitoring system and monitoring method | |
CN101847303A (en) | Speech digital network fire alarm design based on single chip | |
CN202499510U (en) | Antiskid detection device for belt conveyor | |
CN102998062B (en) | A kind of valve method of testing, device and a kind of intelligent valve | |
CN102269030A (en) | Oil-gas separator and crankcase blow-by amount detection control system with same | |
CN107289188A (en) | Meter valve state detection method and system based on fusion of multi-sensor information | |
CN202304904U (en) | Pitot tube flowmeter blowing device and Pitot tube flowmeter adopting same | |
CN107300202A (en) | Control method, system, computer equipment and the readable storage medium storing program for executing of hydraulic module | |
CN206074204U (en) | A kind of tank and its turnover water route leak water detdction structure | |
CN211085671U (en) | Valve locked rotor detection circuit based on AD voltage sampling | |
CN113050522A (en) | Valve state detection method based on safety monitoring function Internet of things intelligent gas meter | |
CN209539713U (en) | Hydraulic oil bypass-filtering tele-control system | |
CN107349693A (en) | A kind of intelligent reminding changes the air cleaner of filter core | |
CN207035250U (en) | A kind of smoke exhaust ventilator with filter screen life tests | |
CN108842909A (en) | The rainwater or wastewater disposition precise control device and its control method of a kind of pipeline performance | |
CN212275519U (en) | Dust concentration on-line monitoring system based on dust concentration meter | |
CN205160064U (en) | Power consumption device power anti -reverse connection circuit | |
CN109199122A (en) | A kind of cooking apparatus | |
CN205932271U (en) | Intelligence belt conveyor stall protection warning circuit | |
CN206916829U (en) | A kind of intelligent tap water water-leakage protecting device | |
CN207567933U (en) | Electronic flap valve and sewage treatment well with failure detector |
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 | ||
CB02 | Change of applicant information |
Address after: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Applicant after: China Railway Construction Heavy Industry Group Co.,Ltd. Address before: 410100 No. 88 Dongqi Road, Jingkai District, Changsha City, Hunan Province Applicant before: China Railway Construction Heavy Industry Co.,Ltd. |
|
CB02 | Change of applicant information | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180306 |
|
RJ01 | Rejection of invention patent application after publication |