CN101434844A - Foal feeding amount control system for coke oven coal feeding cart - Google Patents
Foal feeding amount control system for coke oven coal feeding cart Download PDFInfo
- Publication number
- CN101434844A CN101434844A CNA2008101364781A CN200810136478A CN101434844A CN 101434844 A CN101434844 A CN 101434844A CN A2008101364781 A CNA2008101364781 A CN A2008101364781A CN 200810136478 A CN200810136478 A CN 200810136478A CN 101434844 A CN101434844 A CN 101434844A
- Authority
- CN
- China
- Prior art keywords
- coal
- control system
- amount control
- plc
- coke oven
- 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.)
- Granted
Links
Images
Landscapes
- Coke Industry (AREA)
Abstract
The invention discloses a control system used for controlling the coal feeding quantity of a coke oven coaling vehicle; the coke oven coaling vehicle comprises a coal receiving hopper (1), and a vehicle body of the coaling vehicle; the coal receiving hopper (1) is provided with a coal hopper gate plate (12) which is used for arranging the coal; and the coal receiving hopper (1) is connected with the vehicle body by a plurality of weighing sensors (2, 3, 4). By adopting the technical proposal and applying the weighing sensors and the control of PLC, the coal can be added automatically, fast, precisely and quantitatively, the coal feeding quantity of the coking chamber, the pollution is reduced, the labor intensity of the worker is reduced, the flatting time is reduced, phenomena of corner loss of the coal and furnace hole blockage by the coal and coke discharging times not at regular points are obviously reduced, and the labor productivity is greatly improved.
Description
Technical field
The invention belongs to the technical field of metallurgical industry production unit, specifically, the present invention relates to a kind of coke oven and add coal car coal amount control system.
Background technology
At present, in metallurgical industry was produced, coke oven added the coal-adding type of coal car, generally adopts the vertical spin blanking.The spiral blanking is made up of change speed motor, speed reduction unit, transmission rig and screw mechanism.The number of turns of screw is used near switch and is detected, and detected signal is given PLC, counts the output of relay in program with counter.Change speed motor is used double-speed motor more, and double-speed motor drives speed reduction unit, and speed reduction unit drives transmission rig, and transmission rig drives the screw that adds in the coal bunker, controls the coal amount by the revolution of spiral.Preceding 6 circles of spiral are at a slow speed, and 6 circle back double-speed motors change high-speed cruising automatically, and the inverse 20 of program encloses and is converted to low cruise again, so that the flat coal of pushing machine.The spiral blanking velocity is more slow, and is more satisfactory to the coal error control with the mode of spiral control, but coal is softer in coking chamber, bulk density is less, and screw feeder butt coal amount is less, and single oven coke output is few, coke oven production capacity and efficient are not high, are unfavorable for saving energy and reduce the cost.Spiral blanking time while is longer, influences the rhythm that coke oven is produced, and influences the productivity of coke.
Summary of the invention
Problem to be solved by this invention provides a kind of coke oven and adds coal car coal amount control system, its objective is the automatic control of realization to the coal amount, makes control mode very simple, accurate, reduces the error of single stove coal amount.
To achieve these goals, the technical scheme taked of the present invention is:
This coke oven provided by the present invention adds coal car coal amount control system, described coke oven adds the car body that coal car comprises the bucket of coalingging, adds coal car, establish the coal bunker flashboard that is used to coaling on the described bucket of coalingging, the described bucket of coalingging links to each other with described car body by a plurality of LOAD CELLS.
For making the present invention more perfect, more detailed and concrete technical scheme below also further having proposed, to obtain best practical function, realize goal of the invention better, and improve novelty of the present invention and creativeness:
The bucket of coalingging is provided with 3 point of suppon and is connected with described car body, and described 3 point of suppon are uniform distribution on the horizontal plane periphery of bucket of coalingging, and a described LOAD CELLS is installed on each point of suppon.
Establish PLC in the described coal amount control system, be provided with power module, CPU module, analog quantity load module and switching value output module among the described PLC.
Establish weighing controller in the described coal amount control system, described LOAD CELLS is connected with weighing controller by sensor signal lines, and will the coaling weight of bucket of described LOAD CELLS converts standard signal to and sends weighing controller to; Described weighing controller is connected with PLC by the form of cable with standard signal.
Weighing controller is connected with analog quantity load module among the PLC by the standard signal line, the output of described weighing controller with the relevant standard signal of bucket weight of coalingging, after the analog quantity load module processing through described PLC, send described CPU module to and handle.
Establish magnetic valve and hydro-cylinder in the described coal amount control system, described magnetic valve is located on the control oil circuit of hydro-cylinder, and described coal bunker flashboard is by the Driven by Hydraulic Cylinder opening and closing, and promptly the moving parts of described hydro-cylinder is connected with the coal bunker flashboard; The electromagnetic control structure of described magnetic valve is connected with described PLC by cable.The electromagnetic control structure of described magnetic valve is connected with switching value output module among the described PLC by cable.
Establish touch-screen in the described coal amount control system, described touch-screen is connected with described PLC by the MPI communication line.Touch-screen is connected with CPU module among the PLC by the MPI communication line.
The present invention adopts technique scheme, use the control of LOAD CELLS and PLC, can realize automatic, quick, accurate quantification coal, increased the coal amount of coking chamber, reduce and pollute, reduced working strength of workers, reduced the flat coal time, coal unfilled corner, the stifled fire door phenomenon of coal and the number of times that do not discharge of the coke are on schedule obviously descended, improved labour productivity greatly.
Description of drawings
Below expressed content of this Figure of description and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present invention.
Be labeled as among the figure:
1, the bucket of coalingging, 2, LOAD CELLS, 3, LOAD CELLS, 4, LOAD CELLS, 5, sensor signal lines, 6, weighing controller, 7, standard signal line, 8, cable, 9, magnetic valve, 10, magnetic valve, 11, hydro-cylinder, 12, the coal bunker flashboard, 13, PLC, 14, touch-screen, 15, the MPI communication line.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and principle of work, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present invention, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.Additional numeral is the reference numerals in the accompanying drawing behind the technical characterictic.
The of the present invention structure expressed as Fig. 1, the present invention adds coal car coal amount control system for a kind of coke oven, and described coke oven adds the car body that coal car comprises the bucket 1 of coalingging, adds coal car, establishes the coal bunker flashboard 12 that is used to coaling on the described bucket 1 of coalingging.
In order to solve the problem that exists at the described present known technology of this specification sheets background technology part and to overcome its defective, realization to the automatic control of coal amount, make control mode very simple, accurately, reduce the goal of the invention of the error of single stove coal amount, the present invention takes following technical scheme:
As shown in Figure 1, this coke oven of the present invention adds coal car coal amount control system, and the bucket 1 of coalingging wherein links to each other with described car body by LOAD CELLS 2, LOAD CELLS 3 and LOAD CELLS 4.
Adopt technique scheme, use LOAD CELLS and in conjunction with the control of PLC, form the electric control system that coke oven adds coal car coal amount, the gravity control of coal amount can solve the little problem of dump density in the coking chamber, butt coal amount is many, and single oven coke output is big.Therefore, technique scheme can realize automatically, quick, accurate quantification coal, makes coal control very simple, accurate; Make single stove coal amount error control in ± 50Kg; Increase the coal amount of coking chamber, reduced and pollute, reduced working strength of workers, reduced the flat coal time, coal unfilled corner, the stifled fire door phenomenon of coal and the number of times that do not discharge of the coke are on schedule obviously descended, improved labour productivity greatly.
The present invention also provides following concrete exemplifying embodiment, and those skilled in the art is in that implement when of the present invention can be with reference to selecting for use:
Embodiment one:
The bucket 1 of coalingging described in the present invention is provided with 3 point of suppon and is connected with described car body, described 3 point of suppon are uniform distribution on the horizontal plane periphery of bucket 1 of coalingging, and a described LOAD CELLS 2, LOAD CELLS 3, LOAD CELLS 4 are installed on each point of suppon.
The bucket 1 of coalingging is an independent body of active with respect to car body, the bucket 1 of coalingging links to each other with the car body that adds coal car by three LOAD CELLS, the standard signal of LOAD CELLS output 4-20mA, give weighing controller 6, the tonnage number of 4mA and 20mA standard signal correspondence is set on weighing controller 6, and standard signal is linearly proportional with corresponding tonnage number.
Embodiment two:
Establish PLC13 in the coal amount control system described in the present invention, comprise power module, CPU module, analog quantity load module and switching value output module among the described PLC13.Described PLC is the programable controller, is a kind of novel electrical control gear.PLC has the following advantages: reliability height, immunity from interference are strong; That system constitutes is simple, combined and instant, highly versatile; Programming is simple, and working service is convenient; Function is strong, have wide range of applications; Volume is little, in light weight, low in energy consumption.The electric current that the present invention utilizes PLC to detect motor is controlled the running of motor by the size that compares load current.Wherein, power module provides the work energy of PLC; The CPU module is a central processing unit, is the core components and parts of PLC; The analog quantity load module accepts to add the simulating signal of coal weight, and becomes numerary signal to send the CPU resume module to through treatment conversion; The switching value output module is accepted the steering order of CPU, need be sent to the control device of topworks by the action command that topworks implements by soft relay.
Embodiment three:
Establish weighing controller 6 in the coal amount control system of the present invention, press the example among Fig. 1, described LOAD CELLS is respectively LOAD CELLS 2, LOAD CELLS 3 and LOAD CELLS 4, each above-mentioned LOAD CELLS is connected with weighing controller 6 by sensor signal lines 5, and will coaling struggle against 1 weight of described LOAD CELLS 2, LOAD CELLS 3, LOAD CELLS 4 converts standard signal to and sends weighing controller 6 to; Described weighing controller 6 is connected with PLC13 by standard signal line 7.The standard signal line that this calibration signal line 7 is 4mA and 20mA.
The standard signal of LOAD CELLS output 4-20mA is given weighing controller 6, and the tonnage number of 4mA and 20mA standard signal correspondence is set on weighing controller, and standard signal is linearly proportional with corresponding tonnage number.The standard signal of weighing controller 6 outputs sends the analog quantity load module of PLC13 to, uses for the CPU computing.After configuring parameter according to the needs of production technique, add coal car and connect coal under the coal tower, the coal amount reaches PLC13 after the set(ting)value, can control corresponding rly., by cut-off coal bunker flashboard 12, thereby reaches automatically the accurately purpose of control.
Embodiment four:
Weighing controller 6 described in the present invention is connected with analog quantity load module among the PLC13 by standard signal line 7,6 outputs of described weighing controller be analog quantity with the relevant standard signal of bucket 1 weight of coalingging, after the analog quantity load module processing through described PLC13, send described CPU module to and handle.The analog quantity load module of PLC13 is the numerary signal that becomes CPU to handle the analog signal conversion by weighing controller 6 inputs.
Embodiment five:
Establish magnetic valve 9, magnetic valve 10 and hydro-cylinder 11 in the coal amount control system described in the present invention, described magnetic valve 9, magnetic valve 10 are located on the control oil circuit of hydro-cylinder 11, described coal bunker flashboard 12 drives opening and closing by hydro-cylinder 11, and the moving parts of promptly described hydro-cylinder 11 is connected with the on-off mechanism of coal bunker flashboard 12; The electromagnetic control structure of described magnetic valve 9, magnetic valve 10 is connected with described PLC13 by cable 8.
Magnetic valve 9, magnetic valve 10 are accepted the switching value control signal of PLC, make the armature adhesive or the release of the motion of control valve core of the electromagnetic valve, realize the break-make of hydro-cylinder 11 control oil circuits or the switching of traffic direction, and then realize the cylinder body of hydro-cylinder 11 and the relative movement of piston, make coal bunker flashboard 12 open or close.
The cylinder body of hydro-cylinder 11 is connected with the bucket 1 of coalingging, and piston is connected with coal bunker flashboard 12; Perhaps the cylinder body of hydro-cylinder 11 is connected with coal bunker flashboard 12, and piston is connected with the bucket 1 of coalingging.
Embodiment six:
The electromagnetic control structure of the magnetic valve 9 described in the present invention, magnetic valve 10 is connected with switching value output module among the described PLC13 by cable 8.This switching value output module adopts soft relay output to carry out the signal of action.
Embodiment seven:
Establish touch-screen 14 in the coal amount control system described in the present invention, described touch-screen 14 is connected with described PLC13 by MPI communication line 14.
The present invention adopts touch-screen 14 to show and carries out the data input operation, and parameters such as the coal of the action midway amount of needs adjustment, whole coal amount, moisture are inputed on touch-screen among the PLC13, can adjust control to these parameters at any time.Numerical value among the PLC13, variable state can also be shown on this screen simultaneously.Operator can make things convenient for, independently finish like a cork coal amount, the isoparametric adjustment work of moisture.
Embodiment eight:
Touch-screen 14 described in the present invention is connected with CPU module among the PLC13 by MPI communication line 14.The display window of pusher side, centre, coke side coal amount and wet basis moisture is set on touch-screen 14, links to each other by the MPI agreement between the CPU module on touch-screen 14 and the PLC13.
Embodiment nine:
When influenced by the gravity etc. of coal bunker coal, the data of institute's weighing are affected.For addressing this problem, get moment that the back coal bunker flashboard 12 that puts in place under the sleeve opens alleged numerical value as initial weight, these data are stored in the database of PLC13, when last numerical value during smaller or equal to the difference of initial value and set(ting)value, close coal bunker flashboard 12, finish coal.
Embodiment ten:
The moist degree of coal equally also has influence on theoretical coal amount, needs water parameters is cut when the PLC13 internal calculation.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (9)
1, a kind of coke oven adds coal car coal amount control system, described coke oven adds the car body that coal car comprises the bucket (1) of coalingging, adds coal car, the described bucket (1) of coalingging is provided with the coal bunker flashboard (12) that is used to coaling, and it is characterized in that: the described bucket (1) of coalingging links to each other with described car body by a plurality of LOAD CELLS (2,3,4).
2, add coal car coal amount control system according to the described coke oven of claim 1, it is characterized in that: the described bucket (1) of coalingging is provided with 3 point of suppon and is connected with described car body, described 3 point of suppon are uniform distribution on the horizontal plane periphery of bucket (1) of coalingging, and a described LOAD CELLS (2,3,4) is installed on each point of suppon.
3, add coal car coal amount control system according to the described coke oven of claim 1, it is characterized in that: establish PLC (13) in the described coal amount control system, be provided with power module, CPU module, analog quantity load module and switching value output module among the described PLC (13).
4, add coal car coal amount control system according to the described coke oven of claim 3, it is characterized in that: establish weighing controller (6) in the described coal amount control system, described LOAD CELLS (2,3,4) is connected with weighing controller (6) by sensor signal lines (5), and will the coaling weight of bucket (1) of described LOAD CELLS (2,3,4) converts standard signal to and sends weighing controller (6) to; Described weighing controller (6) is connected with PLC (13) by standard signal line (7).
5, add coal car coal amount control system according to the described coke oven of claim 4, it is characterized in that: described weighing controller (6) is connected with analog quantity load module among the PLC (13) by standard signal line (7), described weighing controller (6) output with the relevant standard signal of bucket (1) weight of coalingging, after the analog quantity load module processing through described PLC (13), send described CPU module to and handle.
6, add coal car coal amount control system according to claim 3 or 4 or 5 described coke ovens, it is characterized in that: establish magnetic valve (9,10) and hydro-cylinder (11) in the described coal amount control system, described magnetic valve (9,10) is located on the control oil circuit of hydro-cylinder (11), described coal bunker flashboard (12) drives opening and closing by hydro-cylinder (11), and the moving parts of promptly described hydro-cylinder (11) is connected with coal bunker flashboard (12); The electromagnetic control structure of described magnetic valve (9,10) is connected with described PLC (13) by cable (8).
7, add coal car coal amount control system according to the described coke oven of claim 6, it is characterized in that: the electromagnetic control structure on the described magnetic valve (9,10) is connected with switching value output module among the described PLC (13) by cable (8).
8, add coal car coal amount control system according to claim 3 or 4 or 7 described coke ovens, it is characterized in that: establish touch-screen (14) in the described coal amount control system, described touch-screen (14) is connected with described PLC (13) by MPI communication line (14).
9, add coal car coal amount control system according to the described coke oven of claim 7, it is characterized in that: described touch-screen (14) is connected with CPU module among the PLC (13) by MPI communication line (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101364781A CN101434844B (en) | 2008-12-15 | 2008-12-15 | Foal feeding amount control system for coke oven coal feeding cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101364781A CN101434844B (en) | 2008-12-15 | 2008-12-15 | Foal feeding amount control system for coke oven coal feeding cart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101434844A true CN101434844A (en) | 2009-05-20 |
| CN101434844B CN101434844B (en) | 2012-04-04 |
Family
ID=40709484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101364781A Active CN101434844B (en) | 2008-12-15 | 2008-12-15 | Foal feeding amount control system for coke oven coal feeding cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101434844B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965125A (en) * | 2012-11-29 | 2013-03-13 | 马钢(集团)控股有限公司 | Coal top loading type coke oven coal-loading truck |
| CN104962297A (en) * | 2015-06-23 | 2015-10-07 | 山西太钢不锈钢股份有限公司 | Method for controlling coal capacity of large coal charging car for coke ovens |
| CN108117875A (en) * | 2016-11-29 | 2018-06-05 | 宝山钢铁股份有限公司 | The detection method that a kind of coke oven coal filling mouth blocks |
| CN108871523A (en) * | 2018-08-01 | 2018-11-23 | 马鞍山钢铁股份有限公司 | It is a kind of that nobody accurately counts device, the system and method for flat coal amount |
| CN109508045A (en) * | 2018-12-17 | 2019-03-22 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of sleeve portion based on PLC accurately adjusts control method and device |
| CN112552930A (en) * | 2020-11-24 | 2021-03-26 | 新乡贝诺电子信息技术有限公司 | Coking feeding equipment convenient for pretreatment and controllable in feeding speed |
| CN113372929A (en) * | 2021-06-25 | 2021-09-10 | 马鞍山钢铁股份有限公司 | Process system and method for adjusting temperature of furnace top space |
| CN113467386A (en) * | 2020-03-30 | 2021-10-01 | 上海梅山钢铁股份有限公司 | Method for accurately measuring coal feeding amount of coke oven carbonization chamber |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005007173B4 (en) * | 2005-02-16 | 2008-02-21 | Schalker Eisenhütte Maschinenfabrik Gmbh | Coke quenching car and method for measuring the weight of coke |
| CN201301302Y (en) * | 2008-10-30 | 2009-09-02 | 芜湖新兴铸管有限责任公司 | Coke oven coal car fed-coal controlling system |
-
2008
- 2008-12-15 CN CN2008101364781A patent/CN101434844B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965125A (en) * | 2012-11-29 | 2013-03-13 | 马钢(集团)控股有限公司 | Coal top loading type coke oven coal-loading truck |
| CN104962297A (en) * | 2015-06-23 | 2015-10-07 | 山西太钢不锈钢股份有限公司 | Method for controlling coal capacity of large coal charging car for coke ovens |
| CN108117875A (en) * | 2016-11-29 | 2018-06-05 | 宝山钢铁股份有限公司 | The detection method that a kind of coke oven coal filling mouth blocks |
| CN108117875B (en) * | 2016-11-29 | 2020-01-31 | 宝山钢铁股份有限公司 | Method for detecting blockage of coal feeding port of coke ovens |
| CN108871523A (en) * | 2018-08-01 | 2018-11-23 | 马鞍山钢铁股份有限公司 | It is a kind of that nobody accurately counts device, the system and method for flat coal amount |
| CN108871523B (en) * | 2018-08-01 | 2024-04-05 | 马鞍山钢铁股份有限公司 | Unmanned device, system and method for precisely counting coal leveling quantity |
| CN109508045A (en) * | 2018-12-17 | 2019-03-22 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of sleeve portion based on PLC accurately adjusts control method and device |
| CN109508045B (en) * | 2018-12-17 | 2021-09-10 | 中国航空工业集团公司北京航空精密机械研究所 | PLC-based sleeve position accurate adjustment control method and device |
| CN113467386A (en) * | 2020-03-30 | 2021-10-01 | 上海梅山钢铁股份有限公司 | Method for accurately measuring coal feeding amount of coke oven carbonization chamber |
| CN113467386B (en) * | 2020-03-30 | 2023-06-09 | 上海梅山钢铁股份有限公司 | Method for accurately measuring coal feeding amount of carbonization chamber of coke oven |
| CN112552930A (en) * | 2020-11-24 | 2021-03-26 | 新乡贝诺电子信息技术有限公司 | Coking feeding equipment convenient for pretreatment and controllable in feeding speed |
| CN113372929A (en) * | 2021-06-25 | 2021-09-10 | 马鞍山钢铁股份有限公司 | Process system and method for adjusting temperature of furnace top space |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101434844B (en) | 2012-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101434844B (en) | Foal feeding amount control system for coke oven coal feeding cart | |
| CN202346614U (en) | Precise and automatic positioning control system for crane | |
| CN102967150B (en) | Energy-saving and environment-friendly feeding control system for vertical laterite-nickel ore smelting furnace controlled by PLC | |
| CN100513004C (en) | Numerically-controlled forging hydraulic press capable of realizing workpiece automatic centering | |
| CN201301302Y (en) | Coke oven coal car fed-coal controlling system | |
| CN202208972U (en) | Multi-point synchronization jacking device | |
| CN103309305B (en) | Production process intelligent control system for shot blast machine for construction machine | |
| CN102886917B (en) | Hydraulic servo control system for efficiently improving pressing precision of powder-forming hydraulic machine | |
| CN202169650U (en) | Movable weighing hopper type three-bin proportioning machine | |
| CN106881903A (en) | A kind of servo-pressing machine control system | |
| CN102995902B (en) | Spiral distributor | |
| CN104555391A (en) | Continuous transporting device and method capable of simultaneously unloading concretes by multiple points | |
| CN101637978A (en) | Deviation correction control system for longitudinal beam hydraulic machine | |
| CN203259856U (en) | Intelligent control system for production process of shot blasting cleaning machine for engineering machinery | |
| CN206265893U (en) | A kind of linear combination automatic feeding mechanism | |
| CN203448051U (en) | Automatic batching device | |
| CN203473864U (en) | Distributing bin automatic switching device for sintering production | |
| CN103058492B (en) | Ore melting furnace quantitative feeding device | |
| CN201242677Y (en) | Weighing electric-controlled system for charge machine | |
| CN204776113U (en) | Full -automatic title material machine | |
| CN201325185Y (en) | Servo pressing machine | |
| CN201851021U (en) | Rotary drill platform leveling control system | |
| CN203392408U (en) | Variable frequency speed regulation device for belt-type feeding machine | |
| CN103008159A (en) | Reciprocating machine with compensation control | |
| CN206219423U (en) | bottle-making machine material weight control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |