CN209447020U - Intelligently realizing explosion-proof pressure difference dust-removing control system - Google Patents
Intelligently realizing explosion-proof pressure difference dust-removing control system Download PDFInfo
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- CN209447020U CN209447020U CN201920516507.0U CN201920516507U CN209447020U CN 209447020 U CN209447020 U CN 209447020U CN 201920516507 U CN201920516507 U CN 201920516507U CN 209447020 U CN209447020 U CN 209447020U
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Abstract
The utility model relates to a kind of intelligently realizing explosion-proof pressure difference dust-removing control systems, obtain module, the motor of air-introduced machine, dust concentration detector, key module, spark detector, gas chamber dust concentration monitoring modular including MCU main control module and the pressure difference module connecting with MCU main control module input terminal, ash quantity monitoring modular, jetting pressure, and connect with the MCU main control module output end impulse electromagnetic valve matrix control circuit, frequency converter, lock gas discharge valve, compound discharge valve, extinguishing device, warning device；Utility model can find the spark being mingled in dust and spark is allowed to extinguish in time to prevent dust explosion in time, and powerful, reliable performance, the operating status that can monitor deduster, can be improved the added value and safety of deduster.
Description
Technical field
The utility model belongs to deduster technical field, and in particular to a kind of intelligently realizing explosion-proof pressure difference dust-removing control system.
Background technique
The control system of deduster is mostly using PLC control technology, and PLC control technology is whole by the application and development of many years
Conjunction have been relatively mature, simple with system, stable title, currently, most of dust-removing control be take common level pressure difference and
The method that fixed cycle combines carries out deashing to deduster: timing deashing is controlled according to preset time interval and period
The mechanism sequential working of deashing, level pressure difference deashing are typically provided a pressure difference upper limit and a pressure difference lower limit, and deduster reaches pressure
Start deashing when the poor upper limit, and reach pressure difference it is offline when deashing terminate.But existing timing deashing and level pressure deashing can only be accomplished
Simple period control, can not accomplish to change its pulse jet frequency according to parameter in real time, especially for agricultural and sideline product
The combustible dusts such as processing dust, woodwork/paper products processing dust, metallurgy/coloured building material industry coal dust dust are removed
When dirt, simple timing or level pressure deashing are not able to satisfy the requirement of safe dedusting.
Utility model content
One kind is provided the purpose of the utility model is to overcome the deficiencies in the prior art can find to be mingled in dust in time
In spark and allow spark to extinguish in time to prevent dust explosion, and powerful, reliable performance, deduster running state monitoring are complete
Standby intelligently realizing explosion-proof pressure difference dust-removing control system.
The technical solution of the utility model is as follows:
A kind of intelligently realizing explosion-proof pressure difference dust-removing control system, abbreviation control system, including MCU main control module and with MCU master
The pressure difference module of control module input connection, ash quantity monitoring modular, jetting pressure acquisition module, the motor of air-introduced machine, dust are dense
Spend detector, key module, spark detector, gas chamber dust concentration monitoring modular, and with the MCU main control module output end
The impulse electromagnetic valve matrix control circuit of connection, lock gas discharge valve, compound discharges valve, extinguishing device, alarm dress at frequency converter
It sets；
The pressure difference module is for obtaining deduster running resistance pressure difference, and the ash quantity monitoring modular is for obtaining ash bucket
The accumulating amount of middle dust, the jetting pressure obtain module and are used to obtain the blowing air pressure in injection tube, the dust concentration inspection
Survey instrument, the spark detector are separately mounted on the internal perisporium of gas chamber air inlet pipe, and the extinguishing device is arranged in spark detection
The downstream of device and its firing-fighting medium are exported to be connected to gas chamber air inlet pipe, and gas chamber is arranged in the gas chamber dust concentration monitoring modular
On inner wall；The connection of the motor of the frequency converter and air-introduced machine.
Further, the also device power detection module being connect with the MCU main control module input terminal.
Further, the also solenoid valve open circuit detection module being connect with the MCU main control module input terminal.
Further, the control system further includes the NB-IoT communication module connecting with the MCU main control module.
Further, it is also communicated with blowdown pipe in the gas chamber air inlet pipe, is provided with check valve and benefit on the blowdown pipe
Gas blower, the motor of the tonifying Qi blower are connect with the MCU main control module.
Further, the control system further includes the dew point transducer connecting with the MCU main control module input terminal, institute
Dew point transducer is stated to be arranged on the inner wall of gas chamber.
Compared with prior art, the utility model has the beneficial effects that
The utility model is in addition to the requirement according to GB/T 17919 is to the pressure difference of deduster, the temperature of gas chamber entry/exit tracheae
It spends, outside the temperature of ash bucket, setting explosion venting valve, also in addition setting is equipped with spark detector, so as to find to be mingled in powder in time
Spark in dirt simultaneously allows spark to extinguish in time to prevent dust explosion, and powerful, reliable performance, the fortune that can monitor deduster
Row state can be improved the added value and safety of deduster；The utility model can obtain deduster pressure difference, realize gas chamber
The monitoring of working condition can realize the frequency control to air-introduced machine according to dust concentration control in gas chamber air inlet pipe to reach
Save the mesh of electric energy；The flue dust accumulated in ash bucket is monitored by using ash quantity monitoring modular, control lock gas discharge valve is certainly
It is dynamic to unload ash, avoid a large amount of dusts in gas chamber；The utility model is also by being monitored specific operating condition and setting to air-introduced machine etc.
It is standby to be controlled, and then changing certainly for adaptable deashing frequency can be made according to specific operating condition, it realizes and is based on pressure difference control
The deduster deashing frequency of system is adaptive, changes the jetting pressure of pulse dust cleaning, produces the cycle of operation of deduster, and due to removing
The effective monitoring of dirt device operating status, so that this system has stronger scalability, convenient for developing other control functions.
Detailed description of the invention
Fig. 1 is the application schematic diagram of the utility model.
Fig. 2 is the structural block diagram of the utility model embodiment 1.
Fig. 3 is the structural block diagram of the utility model embodiment 2.
In figure, MCU main control module 1, pressure difference module 2, ash quantity monitoring modular 3, jetting pressure obtain module 4, air-introduced machine 5,
Dust concentration detector 6, key module 7, spark detector 8, gas chamber dust concentration monitoring modular 9, impulse electromagnetic valve matrix control
Circuit 10 processed, lock gas discharge valve 12, compound discharges valve 13, extinguishing device 14, warning device 15, ash bucket 16, spray at frequency converter 11
Blowpipe 17, gas chamber air inlet pipe 18, device power detection module 19, solenoid valve open circuit detection module 20, NB-IoT communication module 21,
Blowdown pipe 22, tonifying Qi blower 23, dew point transducer 24, gas chamber 25, air-purifying chamber 26, console 27, impulse electromagnetic valve 28, gas bag
29。
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of intelligently realizing explosion-proof pressure difference dust-removing control system, abbreviation control system, including MCU master control mould
Block 1 and the pressure difference module 2 connecting with 1 input terminal of MCU main control module, ash quantity monitoring modular 3, jetting pressure obtain module 4, draw
Motor, dust concentration detector 6, key module 7, spark detector 8, the gas chamber dust concentration monitoring modular 9 of blower 5, and
It is the impulse electromagnetic valve matrix control circuit 10 that is connect with 1 output end of MCU main control module, frequency converter 11, lock gas discharge valve 12, compound
Type discharges valve 13, extinguishing device 14, warning device 15；Pressure difference module 2 is for obtaining deduster running resistance pressure difference, ash quantity prison
The accumulating amount that module 3 is used to obtain dust in ash bucket 16 is surveyed, jetting pressure obtains module 4 and is used to obtain the blowing in injection tube 17
Air pressure, dust concentration detector 6, spark detector 8 are separately mounted on the internal perisporium of gas chamber air inlet pipe 18, and extinguishing device 14 is set
Set spark detector 8 downstream and its firing-fighting medium export and be connected to gas chamber air inlet pipe 18, gas chamber dust concentration monitoring modular 9
It is arranged on the inner wall of gas chamber 25；Frequency converter 11 is connect with the motor of air-introduced machine 5.
As shown in Figure 1, the setting of air-introduced machine 5 drives ash-laden gas in dusty gas exit, by the air draught effect of air-introduced machine 5
The flowing of body, under normal circumstances, the pressure of dusty gas inlet are greater than the pressure in dusty gas exit, dusty gas outlet
The pressure at place subtract dusty gas inlet pressure be deduster running resistance pressure difference, the utility model passes through in gas
The acquisition that baroceptor realizes pressure difference is set on the inner wall of room air inlet pipe 18 and gas chamber escape pipe；Preferably, this is practical new
Type use model MPX2010 baroceptor, MPX2010 provide high-precision and high linearity voltage output, output with
It is directly proportional by measuring pressure, accurate range and offset calibration and temperature-compensating, temperature-compensating model are realized by laser trimming
Enclosing is 0-85 DEG C, and error can be controlled in 1%, to realize the precise measurement of pressure difference.
Other than measuring to pressure difference, the utility model is again provided with jetting pressure at 17 air inlet of injection tube and obtains
Modulus block 4, it is baroceptor that jetting pressure, which obtains module 4, and the purpose that baroceptor is arranged herein is to detect spray
Blow pressure power is replenished in time gas source and monitors the working condition of air compressor machine, and since each impulse electromagnetic valve 28 is apart from blowing
The distance of 17 air inlet of pipe is different, remoter to filter bag or the thorough deashing of filter cylinder, injection tube of adjusting the distance 17 in order to realize
When filter bag or filtering cylinder ash cleaning, jetting pressure is also bigger；Meanwhile jetting pressure range is provided in this control system, work as inspection
Jetting pressure is measured below or above preset jetting pressure range, MCU main control module 1 controls warning device 15 and sounds an alarm.
Ash quantity monitoring modular 3 includes level-sensing device and ash bucket temperature sensor 30, it is preferred that radio frequency admittance level-sensing device is used,
The dust stratification amount in ash bucket 16 is obtained by level-sensing device, MCU main control module 1 controls lock gas discharging after dust stratification amount exceeds setting range
12 automatic ash-discharging of valve avoids a large amount of dusts in gas chamber 25；Without selecting conventional use of spring loaded safety valve in the utility model,
But use it is compound discharge valve 13, the compound valve 13 that discharges has function automatically and manually, when reaching setting unloading pressure
When value, automatic protection program is triggered, and is issued and is instructed by MCU main control module 1, the compound valve opening pressure release for discharging valve 13,
It is opened not in time due to each if there is the compound valve for discharging valve 13, when the compound valve 13 that discharges reaches mechanical protection
When setting discharges value, the compound valve 13 that discharges is opened pressure release by mechanical protection movement；The compound valve 13 that discharges is provided simultaneously with cabinet
The function of release and moment decompression protection cabinet, function uses, close using the flexible sealing of silicone rubber material and the rigidity of steel
Envelope, sealing is not easy to be destroyed, and can return seat automatically after pressure release, more environmentally-friendly.
Dust concentration detector 6 is used to monitor the dust concentration into gas chamber 25, preferably uses laser dust detector；
By MCU main control module 1 is arranged in console 27 and on console 27 setting be used for information exchange display screen and by
Key module 7 realizes the setting of a parameter, checks and control the programming of program；Gas chamber dust concentration monitoring modular 9 is for monitoring
Dust concentration in gas chamber 25, when pressure difference module 2 has detected that abnormal is to monitor mould by gas chamber dust concentration in each gas chamber 25
The judgement of the deviation of the monitor value of block 9 and regime values is filter bag in which gas chamber 25 or filter cylinder or the sealing of gas chamber 25 occur it is different
Often.
Matrix majorization is used to impulse electromagnetic valve 28, to save the output switch parameter channel points of MCU main control module, arteries and veins
Rushing solenoid valve matrix majorization method is the prior art, and details are not described herein again；Lock gas discharge valve 12 can guarantee that dust is cleared up in time, subtract
Few deduster air leak rate of air curtain, and can avoid flour dust overflow and form dust cloud.
Spark detector 8 receives and sends spark signal to MCU main control module 1 after detectable signal, and MCU main control module 1 receives
Alarm is triggered after spark signal rapidly and controls extinguishing device 14 to 18 ejecting extinguishing medium of gas chamber air inlet pipe such as nitrogen, titanium dioxide
Carbon, inert gas etc. are nipped in the bud spark, and the forms such as fire monitor, Fire extinguishing ball, spray equipment can be used in extinguishing device 14.
The MCU main control module 1 of the utility model is arranged on main control board, and main control board includes based on STM32
The minimum system of main control chip, simulation control electric power loop, the digital control electric power loop of single-chip microcontroller, are communicated with display module
RS-232 communication interface circuit, the RS-485 communication interface circuit, the D/A that are communicated respectively with upper computer and lower computer convert
Circuit, signal acquisition amplifying circuit, A/D conversion circuit, solenoid valve Output matrix control circuit, data storage circuitry, it is real-time when
Clock display circuit module and peripheral circuit etc..
Embodiment 2
The present embodiment is the another embodiment based on embodiment 1, and the identical technical solution of embodiment 1 is described will
It omits, only the technical solution different from embodiment 1 is illustrated.
As shown in Figure 1, Figure 3, it is preferred that the also device power detection module being connect with 1 input terminal of MCU main control module
19, it is monitored by electrifying condition of the setting on-off model input circuit to air-introduced machine 5 and lock gas discharge valve 12, and utilize
The comparing function of LM2901 voltage comparator and optocoupler get through function；The electrifying condition of air compressor machine is directly big by jetting pressure
Small judgement.
Preferably, the also solenoid valve open circuit detection module 20 being connect with 1 input terminal of MCU main control module, for detecting
Whether working on power normal of impulse electromagnetic valve 28, when impulse electromagnetic valve open circuit does not work and alarm repairs.
Preferably, control system further includes the NB-IoT communication module 21 connecting with MCU main control module 1, when deduster is transported
When row is abnormal, main control chip wakes up NB-IoT communication module 21, and NB-IoT communication module 21 sends out deduster unusual service condition
Give cloud server, consequently facilitating deduster manufacturer or the manufacturer of dust cleaner control system to the occurrence cause of unusual service condition into
Row obtains and research, the structure of the control system or deduster that are conducive to deduster improve, it is preferred that NB-IoT communicates mould
Block 21 uses the explosion-proof NB-IoT mould group of model ME3616.
Preferably, it is also communicated with blowdown pipe 22 in gas chamber air inlet pipe 18, check valve 30 and tonifying Qi are provided on blowdown pipe 22
Blower 23, tonifying Qi blower 23 are connect with MCU main control module 1, blowdown pipe 22 be used for into gas chamber 25 dry with accelerate dust flowing,
It dilutes dust concentration, even change the temperature in gas chamber 25, check valve 30 is for preventing dust-contained airflow from escaping from blowdown pipe 22.
Preferably, control system further includes the dew point transducer 24 connecting with 1 input terminal of MCU main control module, dew point sensor
Device 24 is arranged on the inner wall of gas chamber 25, and dew point transducer 24 is used to monitor the internal environment conditions of gas chamber 25, in relative humidity
When higher, MCU main control module 1 control blowdown pipe 22 blow into gas chamber 25, reduce gas chamber 25 in ambient humidity, prevent due to
Condensation vapor causes paste bag in dust-contained airflow.
The MCU main control module 1 of the utility model is arranged on main control board, and main control board includes based on STM32
The minimum system of main control chip, simulation control electric power loop, the digital control electric power loop of single-chip microcontroller, are communicated with display module
RS-232 communication interface circuit, the RS-485 communication interface circuit, the D/A that are communicated respectively with upper computer and lower computer convert
Circuit, signal acquisition amplifying circuit, A/D conversion circuit, on-off model input circuit, solenoid valve Output matrix control circuit,
Solenoid valve is opened and closed detection circuit, data storage circuitry, Real Time Clock Display circuit module and peripheral circuit etc..
For example, the adoptable model STM32F107VCT6 of main control chip, simulation control electric power loop and single-chip microcontroller number
Word controls electric power loop and is controlled by TOP246YN power supply chip, and RS-485 communication chip uses ADUM1311 Phototube Coupling core
Piece, and 5V power supply is provided to RS-485 chip by 14D-05S05R isolated from power chip, D/A conversion chip uses DAC7611
Chip simultaneously carries out retention signal gain amplifier by LM358 dual operational amplifier, using LMC6482 operational amplifier as air pressure
The signal amplification chip of sensor bridge output voltage, A/D conversion chip use ADS8341, and data storage circuitry uses 24C02
Data storage circuitry, Real Time Clock Display circuit module use RX8025 Real Time Clock Display circuit module；Pass through DAC7611 core
The A/D conversion circuit of piece control controls the output of frequency converter 11, and then adjusts the revolving speed of air-introduced machine 5, is believed by analog current
It number controls frequency converter 11, enhances the anti-interference ability of output analog signal；Display module is aobvious using 4.3 inches of TFT colours
Display screen, then uses RS-232 communication modes between display module and control mainboard, data transmission bauds is fast, it can be achieved that master control core
The Real Data Exchangs of piece and display module；To the monitoring numerical values such as temperature, pressure difference, rotation speed of fan, dust concentration be arranged the upper limit and
Lower limit, while the working condition of air-introduced machine 5, lock gas discharge valve 12, air compressor machine, impulse electromagnetic valve 28 is monitored, when wherein
One or more numerical value when being abnormal, main control chip controls warning device 15 and issues audible and visible alarm.
Control system uses the theory of fuzzy control, and fuzzy algorithmic approach can refer to o. 11th " modern Manufacturing Engineering " the in 2010
110-115 pages of " being designed with the electric stove dust resistance control system of parameter self-tuning fuzzy algorithmic approach ".
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (6)
1. a kind of intelligently realizing explosion-proof pressure difference dust-removing control system, it is characterised in that: including MCU main control module (1) and with MCU master control
The pressure difference module (2) of module (1) input terminal connection, ash quantity monitoring modular (3), jetting pressure obtain module (4), air-introduced machine (5)
Motor, dust concentration detector (6), key module (7), spark detector (8), gas chamber dust concentration monitoring modular (9), with
And impulse electromagnetic valve matrix control circuit (10), frequency converter (11), the lock gas being connect with MCU main control module (1) output end
Discharge valve (12) compound discharges valve (13), extinguishing device (14), warning device (15)；
The pressure difference module (2) is for obtaining deduster running resistance pressure difference, and the ash quantity monitoring modular (3) is for obtaining ash
The accumulating amount of dust in bucket (16), the jetting pressure obtain module (4) and are used to obtain the blowing air pressure in injection tube (17), institute
State dust concentration detector (6), the spark detector (8) is separately mounted on the internal perisporium of gas chamber air inlet pipe (18), described
Extinguishing device (14) be arranged spark detector (8) downstream and its firing-fighting medium export and be connected to gas chamber air inlet pipe (18), institute
Gas chamber dust concentration monitoring modular (9) is stated to be arranged on the inner wall of gas chamber (25)；The electricity of the frequency converter (11) and air-introduced machine (5)
Machine connection.
2. intelligently realizing explosion-proof pressure difference dust-removing control system according to claim 1, it is characterised in that: with the MCU master control mould
The connection of block (1) input terminal there are also device power detection module (19).
3. intelligently realizing explosion-proof pressure difference dust-removing control system according to claim 1, it is characterised in that: with the MCU master control mould
Also solenoid valve open circuit detection module (20) of block (1) input terminal connection.
4. intelligently realizing explosion-proof pressure difference dust-removing control system according to claim 1, it is characterised in that: further include and the MCU
The NB-IoT communication module (21) of main control module (1) connection.
5. intelligently realizing explosion-proof pressure difference dust-removing control system according to claim 1, it is characterised in that: the gas chamber air inlet pipe
(18) it is also communicated on blowdown pipe (22), check valve (30) and tonifying Qi blower (23) is provided on the blowdown pipe (22), it is described
The motor of tonifying Qi blower (23) is connect with the MCU main control module (1).
6. intelligently realizing explosion-proof pressure difference dust-removing control system according to claim 5, it is characterised in that: further include and the MCU
The dew point transducer (24) of main control module (1) input terminal connection, inner wall of dew point transducer (24) setting in gas chamber (25)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516507.0U CN209447020U (en) | 2019-04-16 | 2019-04-16 | Intelligently realizing explosion-proof pressure difference dust-removing control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516507.0U CN209447020U (en) | 2019-04-16 | 2019-04-16 | Intelligently realizing explosion-proof pressure difference dust-removing control system |
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| Publication Number | Publication Date |
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| CN209447020U true CN209447020U (en) | 2019-09-27 |
Family
ID=68034555
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| CN201920516507.0U Expired - Fee Related CN209447020U (en) | 2019-04-16 | 2019-04-16 | Intelligently realizing explosion-proof pressure difference dust-removing control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111275257A (en) * | 2020-01-19 | 2020-06-12 | 武汉爱迪科技股份有限公司 | Dust explosion-proof air volume monitoring method and monitoring system |
| CN112665677A (en) * | 2020-12-25 | 2021-04-16 | 利晟（杭州）科技有限公司 | Automatic air chamber cleaning system and method of air pollution online monitoring equipment |
| CN113457292A (en) * | 2021-07-16 | 2021-10-01 | 张家港宏昌钢板有限公司 | Electric furnace steelmaking dust removal equipment based on pneumatic dredging |
| CN113521899A (en) * | 2021-07-29 | 2021-10-22 | 福建龙净环保股份有限公司 | Ash removal method of bag type dust collector |
| CN113521602A (en) * | 2020-04-14 | 2021-10-22 | 青岛索尔汽车有限公司 | Cable pipeline fire extinguishing method |
| CN114345060A (en) * | 2021-12-28 | 2022-04-15 | 山东万腾环保科技有限公司 | Full-automatic intelligent dust remover |
| CN114632726A (en) * | 2022-03-10 | 2022-06-17 | 九州天禾(山东)智能科技有限公司 | But jetting of real-time supervision protection prevents stifled structure |
-
2019
- 2019-04-16 CN CN201920516507.0U patent/CN209447020U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111275257A (en) * | 2020-01-19 | 2020-06-12 | 武汉爱迪科技股份有限公司 | Dust explosion-proof air volume monitoring method and monitoring system |
| CN111275257B (en) * | 2020-01-19 | 2023-04-18 | 武汉爱迪科技股份有限公司 | Dust explosion-proof air volume monitoring method and monitoring system |
| CN113521602A (en) * | 2020-04-14 | 2021-10-22 | 青岛索尔汽车有限公司 | Cable pipeline fire extinguishing method |
| CN112665677A (en) * | 2020-12-25 | 2021-04-16 | 利晟（杭州）科技有限公司 | Automatic air chamber cleaning system and method of air pollution online monitoring equipment |
| CN112665677B (en) * | 2020-12-25 | 2023-06-30 | 利晟（杭州）科技有限公司 | Automatic cleaning system and method for air chamber of air pollution on-line monitoring equipment |
| CN113457292A (en) * | 2021-07-16 | 2021-10-01 | 张家港宏昌钢板有限公司 | Electric furnace steelmaking dust removal equipment based on pneumatic dredging |
| CN113521899A (en) * | 2021-07-29 | 2021-10-22 | 福建龙净环保股份有限公司 | Ash removal method of bag type dust collector |
| CN113521899B (en) * | 2021-07-29 | 2023-01-03 | 福建龙净环保股份有限公司 | Ash removal method of bag type dust collector |
| CN114345060A (en) * | 2021-12-28 | 2022-04-15 | 山东万腾环保科技有限公司 | Full-automatic intelligent dust remover |
| CN114632726A (en) * | 2022-03-10 | 2022-06-17 | 九州天禾(山东)智能科技有限公司 | But jetting of real-time supervision protection prevents stifled structure |
| CN114632726B (en) * | 2022-03-10 | 2024-05-07 | 九州天禾(山东)智能科技有限公司 | But jetting of real-time supervision protection prevents stifled structure |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20190927 |