CN207450297U - Air supporting pulse automatic ration packing machine - Google Patents
Air supporting pulse automatic ration packing machine Download PDFInfo
- Publication number
- CN207450297U CN207450297U CN201721276497.5U CN201721276497U CN207450297U CN 207450297 U CN207450297 U CN 207450297U CN 201721276497 U CN201721276497 U CN 201721276497U CN 207450297 U CN207450297 U CN 207450297U
- Authority
- CN
- China
- Prior art keywords
- air
- valve
- pulse
- permeable plate
- packing machine
- 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.)
- Active
Links
Landscapes
- Vacuum Packaging (AREA)
Abstract
The utility model discloses a kind of air supporting pulse automatic ration packing machine, including tank body, air permeable plate, sealing cover and air accumulator;Butterfly valve is installed, tank wall is equipped with discharge port, and tank base is equipped with angle, and air permeable plate is mounted on by flange assembly on angle, and sealing cover is arranged below air permeable plate and is connected with flange assembly at the top of tank body;Air accumulator memory contains compressed air, and air accumulator is connected respectively by the gentle floating pneumatic tube of pulse air pressure pipe with sealing cover, and pulse valve is equipped in pulse air pressure pipe, and solenoid valve and pressure regulator valve are installed on air supporting pneumatic tube, and pulse valve is set with solenoid valve to be synchronous.It is convenient that air permeable plate is cleaned and replaced, compressed air in air accumulator applies pulse compressed air and air supporting compressed air through air permeable plate to the in vivo packing materials of tank, one end-of-pulsing closes pulse compressed air, keep air supporting compressed air, make to maintain air supporting air-flow on air permeable plate, the friction of material and air permeable plate is reduced, improve accuracy of packaging and reduces dust pollution.
Description
Technical field
The utility model is related to packing machine technical field, more particularly to a kind of air supporting pulse automatic ration valve bag packaging
Machine.
Background technology
Existing packing machine, monoblock air supporting plate, which is fixed with seccotine on gas-floating chamber, replaces difficult, air-floating apparatus and tank body company
Gap is connected to, easily runs ash, air supporting edges of boards edge has a certain distance with tank body, tank body side source pulse air compressed air is caused to be blown not
It arrives, air-floating apparatus and tank body form dead angle, and in an end-of-pulsing since solenoid valve is closed, air-flow, object are lost on air supporting plate
Material dead weight returns to air supporting plate, repeatedly in this way, causing the abrasion to air supporting plate, an end-of-pulsing, material returns to air supporting plate, when after
During continuous cycle pulse, impact force is big, easily runs ash, influences the ride comfort that discharges, influences accuracy of packaging.
Utility model content
The purpose of this utility model is to provide a kind of air supporting pulse automatic ration packing machine, to solve existing skill
Above-mentioned technical problem present in art.
Air supporting pulse automatic ration packing machine provided by the utility model, including tank body, air permeable plate, sealing cover and
Air accumulator;
Butterfly valve is installed, the tank wall is equipped with discharge port, and the tank base is equipped with angle, institute at the top of the tank body
State air permeable plate by flange assembly be mounted on the angle on, the sealing cover be arranged below the air permeable plate and with the method
Blue component connection;
The air accumulator memory contains compressed air, the air accumulator respectively by the gentle floating pneumatic tube of pulse air pressure pipe with
The sealing cover connects, and pulse valve is equipped in the pulse air pressure pipe, solenoid valve and pressure regulation are installed on the air supporting pneumatic tube
Valve, the pulse valve and the solenoid valve are set to be synchronous.
Further, the butterfly valve is connected with feed bin, and the flange assembly includes first flange and second flange, and described the
One flange is mounted on the position that the tank base corresponds to the angle, and the air permeable plate is mounted in the second flange, institute
Second flange is stated to be connected with the first flange.
Further, check-valves in the pulse air pressure pipe is installed, check-valves is installed on the air supporting pneumatic tube.
Further, the air accumulator is equipped with safety valve and pressure gauge.
Further, the air inlet connection pressure regulator valve of the air accumulator.
Further, the angle of the air permeable plate and the discharge port is 135-160 °.
Further, air pressure is 0.01-0.2MPa in the air accumulator.
Further, the solenoid valve connection PLC controller, the pulse valve connect PLC controller.
Further, the tank body includes the cylindrical section being connected and conical section, the angle are arranged on the conical section
Bottom.
Further, discharging control valve is installed on the discharge port.
Air supporting pulse automatic ration packing machine provided by the utility model, has the following advantages that:
The application air permeable plate is mounted on by flange assembly on the angle, is cleaned and is replaced after convenient, in air accumulator
The compressed air of storage applies pulse compressed air and air supporting compressed air through air permeable plate to the in vivo packing materials of tank, one
A end-of-pulsing closes pulse compressed air, and air supporting compressed air continues to keep, makes that air supporting air-flow can be maintained on air permeable plate,
Air film is formed between material and air permeable plate, separates air permeable plate and material, reduces the friction of material and air permeable plate, air-flow continues to drive
Material conveys, impact force smaller, more well-balanced output, improves accuracy of packaging and reduces dust pollution.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structural representation for the air supporting pulse automatic ration packing machine that the utility model embodiment one provides
Figure.
Reference numeral:1- tank bodies;2- air permeable plates;3- sealing covers;4- air accumulators;5- butterfly valves;6- discharge ports;7- flange groups
Part;8- pulse air pressure pipes;9- air supporting pneumatic tubes;81- pulse valves;91- solenoid valves;92- pressure regulator valves;71- first flanges;72-
Two flanges;10- check-valves;41- safety valves;42- pressure gauges;43- air inlets;61- discharging control valves;11- cylindrical sections;12- justifies
Bore section.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected scope.
, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection;Can be mechanical connection or electrical connection;It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on can understanding as the case may be
State concrete meaning of the term in the utility model.
Embodiment one:
Fig. 1 is the structural representation for the air supporting pulse automatic ration packing machine that the utility model embodiment one provides
Figure;As shown in Figure 1, the utility model embodiment one provide air supporting pulse automatic ration packing machine, including tank body 1,
Air permeable plate 2, sealing cover 3 and air accumulator 4;
1 top of tank body is equipped with butterfly valve 5, and 1 side wall of tank body is equipped with discharge port 6, and 1 bottom of tank body is equipped with oblique
Mouthful, the air permeable plate 2 is mounted on by flange assembly 7 on the angle, and the sealing cover 3 is arranged below the air permeable plate 2
And it is connected with the flange assembly 7;
4 memory of air accumulator contains compressed air, and the air accumulator 4 passes through pulse air pressure pipe 8 and air supporting air pressure respectively
Pipe 9 is connected with the sealing cover 3, and pulse valve 81 is equipped in the pulse air pressure pipe 8, electricity is installed on the air supporting pneumatic tube 9
Magnet valve 91 and pressure regulator valve 92, the pulse valve 81 and the solenoid valve 91 are set to be synchronous.
Preferably, the butterfly valve 5 is connected with feed bin, and the flange assembly 7 includes first flange 71 and second flange 72, institute
The position that first flange 71 corresponds to the angle mounted on 1 bottom of tank body is stated, the air permeable plate 2 is mounted on second method
On orchid 72, the second flange 72 is connected with the first flange 71.
Specifically, butterfly valve 5 is Pneumatic butterfly valve.
Pneumatic butterfly valve is made of pneumatic actuator and butterfly valve.
Pneumatic butterfly valve is to do keying with the circular butterfly plate rotated with valve rod, main to realize the operated pneumatic valve for enabling action
Block valve use is done, also may be designed to that there is adjusting or section valve and is adjusted, butterfly valve is in low pressure medium-large caliber pipe at present
Use on road is more and more.
Pneumatic butterfly valve is classified:Stainless steel Pneumatic butterfly valve seals Pneumatic butterfly valve, soft seal Pneumatic butterfly valve, the pneumatic butterfly of carbon steel firmly
Valve.The major advantage of Pneumatic butterfly valve, simple in structure, small in volume, low cost, the Pneumatic butterfly valve feature is especially notable, peace
Mounted in high-altitude secret tunnel, facilitate by two-position-five-way solenoid valve control operation, also regulating flow quantity medium.
Preferably, check-valves 10 in the pulse air pressure pipe 8 is installed, check-valves is installed on the air supporting pneumatic tube 9
10。
Check-valves 10 refers to flow in itself by medium and automatic open and close flap, for preventing the valve of medium refluence, again
Claim non-return valve, check valve, reflux valve and counterbalance valve.
Check-valves belongs to a kind of automatic valve, and main function is to prevent medium from flowing backwards, prevent that pump and drive motor are anti-
Turn and vessel media is released.
Preferably, the air accumulator 4 is equipped with safety valve 41 and pressure gauge 42.
The safety in utilization of air accumulator 4 is improved by safety valve 41 and pressure gauge 42.
Safety valve 41 is that opening and closing element is lower in normally off by external force effect, when the pressure medium rise in equipment or pipeline
During more than specified value, by outside system discharge medium prevent that pressure medium in pipeline or equipment is more than the special of specified value
Valve.Safety valve 41 belongs to automatic valve class, is mainly used for boiler, on pressure vessels and pipes, and control pressure is no more than specified value,
Important protective effect has been run to personal safety and equipment.Safety valve 41 has to pass through pressure testing and could use.
Pressure gauge 42 refers to using elastic element as sensing element, measure and indicate the instrument higher than environmental pressure.
Preferably, the air inlet 43 of the air accumulator 4 connects pressure regulator valve.
Pass through the air pressure in pressure regulation valve regulation air accumulator 4.
Preferably, the angle of the air permeable plate 2 and the discharge port 6 is 135-160 °.
Specifically, discharge port 6 is arranged on plane lowest part top on air permeable plate 2, plane lowest part and discharging on air permeable plate 2
6 lowest parts of mouth are highly consistent.
Preferably, air pressure is 0.01-0.2MPa in the air accumulator 4, and 60 watts or so of power consumption, air consumption is minimum about
0.1 cube/minute.
Preferably, the pulse valve 81 connects PLC controller, and the solenoid valve 91 connects PLC controller.
Automatically controlling to pulse valve 81 and solenoid valve 91 is realized by PLC controller.
Programmable logic controller (PLC) (Programmable Logic Controller, abbreviation PLC), one kind have micro- place
Control instruction for the digital logic controller of automation control, can be loaded memory at any time by the digital electronic device of reason machine
Interior storage and execution.
Programmable controller is by innernal CPU, instruction and data memory, input-output unit, power supply module, digital simulation etc.
Unit institute modularity is combined into.
Preferably, the tank body 1 includes the cylindrical section 11 being connected and conical section 12, the angle are arranged on the circular cone
12 bottoms of section.
Air supporting pulse automatic ration packing machine provided in this embodiment, has the following advantages that:
The application air permeable plate 2 is mounted on by flange assembly 7 on the angle, is cleaned and is replaced, air accumulator 4 after convenient
The compressed air of memory storage applies pulse compressed air and air supporting compressed air through air permeable plate 2 to the packing materials in tank body 1,
Pulse compressed air is closed in an end-of-pulsing, air supporting compressed air continues to keep, makes that air supporting gas can be maintained on air permeable plate 2
Stream, forms air film between material and air permeable plate 2, separates air permeable plate 2 and material, reduces the friction of material and air permeable plate 2, air-flow
Continue to drive material conveying, impact force smaller, more well-balanced output improves accuracy of packaging and reduces dust pollution.
Embodiment two:
The air supporting pulse automatic ration packing machine that the present embodiment two provides is the air supporting arteries and veins provided embodiment one
Being further improved for automatic ration packing machine is rushed, on the basis of embodiment one and Fig. 1, what the present embodiment two provided
Air supporting pulse automatic ration packing machine, including tank body 1, air permeable plate 2, sealing cover 3 and air accumulator 4;
1 top of tank body is equipped with butterfly valve 5, and 1 side wall of tank body is equipped with discharge port 6, and 1 bottom of tank body is equipped with oblique
Mouthful, the air permeable plate 2 is mounted on by flange assembly 7 on the angle, and the sealing cover 3 is arranged below the air permeable plate 2
And it is connected with the flange assembly 7;
4 memory of air accumulator contains compressed air, and the air accumulator 4 passes through pulse air pressure pipe 8 and air supporting air pressure respectively
Pipe 9 is connected with the sealing cover 3, and pulse valve 81 is equipped in the pulse air pressure pipe 8, electricity is installed on the air supporting pneumatic tube 9
Magnet valve 91 and pressure regulator valve 92, the pulse valve 81 and the solenoid valve 91 are set to be synchronous.
Preferably, the butterfly valve 5 is connected with feed bin, and the flange assembly 7 includes first flange 71 and second flange 72, institute
The position that first flange 71 corresponds to the angle mounted on 1 bottom of tank body is stated, the air permeable plate 2 is mounted on second method
On orchid 72, the second flange 72 is connected with the first flange 71.
Specifically, butterfly valve 5 is Pneumatic butterfly valve.
Pneumatic butterfly valve is made of pneumatic actuator and butterfly valve.
Pneumatic butterfly valve is to do keying with the circular butterfly plate rotated with valve rod, main to realize the operated pneumatic valve for enabling action
Block valve use is done, also may be designed to that there is adjusting or section valve and is adjusted, butterfly valve is in low pressure medium-large caliber pipe at present
Use on road is more and more.
Pneumatic butterfly valve is classified:Stainless steel Pneumatic butterfly valve seals Pneumatic butterfly valve, soft seal Pneumatic butterfly valve, the pneumatic butterfly of carbon steel firmly
Valve.The major advantage of Pneumatic butterfly valve, simple in structure, small in volume, low cost, the Pneumatic butterfly valve feature is especially notable, peace
Mounted in high-altitude secret tunnel, facilitate by two-position-five-way solenoid valve control operation, also regulating flow quantity medium.
Preferably, check-valves 10 in the pulse air pressure pipe 8 is installed, check-valves is installed on the air supporting pneumatic tube 9
10。
Check-valves 10 refers to flow in itself by medium and automatic open and close flap, for preventing the valve of medium refluence, again
Claim non-return valve, check valve, reflux valve and counterbalance valve.
Check-valves belongs to a kind of automatic valve, and main function is to prevent medium from flowing backwards, prevent that pump and drive motor are anti-
Turn and vessel media is released.
Preferably, the air accumulator 4 is equipped with safety valve 41 and pressure gauge 42.
The safety in utilization of air accumulator 4 is improved by safety valve 41 and pressure gauge 42.
Safety valve 41 is that opening and closing element is lower in normally off by external force effect, when the pressure medium rise in equipment or pipeline
During more than specified value, by outside system discharge medium prevent that pressure medium in pipeline or equipment is more than the special of specified value
Valve.Safety valve 41 belongs to automatic valve class, is mainly used for boiler, on pressure vessels and pipes, and control pressure is no more than specified value,
Important protective effect has been run to personal safety and equipment.Safety valve 41 has to pass through pressure testing and could use.
Pressure gauge 42 refers to using elastic element as sensing element, measure and indicate the instrument higher than environmental pressure.
Preferably, the air inlet 43 of the air accumulator 4 connects pressure regulator valve.
Pass through the air pressure in pressure regulation valve regulation air accumulator 4.
Preferably, the angle of the air permeable plate 2 and the discharge port 6 is 135-160 °.
Specifically, discharge port 6 is arranged on plane lowest part top on air permeable plate 2, plane lowest part and discharging on air permeable plate 2
6 lowest parts of mouth are highly consistent.
Preferably, air pressure is 0.01-0.2MPa in the air accumulator 4, and 60 watts or so of power consumption, air consumption is minimum about
0.1 cube/minute.
Preferably, the pulse valve 81 connects PLC controller, and the solenoid valve 91 connects PLC controller.
Automatically controlling to pulse valve 81 and solenoid valve 91 is realized by PLC controller.
Programmable logic controller (PLC) (Programmable Logic Controller, abbreviation PLC), one kind have micro- place
Control instruction for the digital logic controller of automation control, can be loaded memory at any time by the digital electronic device of reason machine
Interior storage and execution.
Programmable controller is by innernal CPU, instruction and data memory, input-output unit, power supply module, digital simulation etc.
Unit institute modularity is combined into.
Preferably, the tank body 1 includes the cylindrical section 11 being connected and conical section 12, the angle are arranged on the circular cone
12 bottoms of section.
Preferably, discharging control valve 61 is installed on the discharge port 6.
The discharging speed, how many of discharge port 6 is controlled by discharging control valve 61, so as to reach accurate discharging purpose.
Specifically, discharging control valve 61 is inserted sheet valve.
Specifically, air permeable plate 2 is made of high rigidity, high density gas permeable material.
The material that the air supporting pulse automatic ration packing machine of the application is applicable in packaging is:Premixing dry powder and mortar (sand
And cement admixture) material, building materials powder body material (land plaster, powder of lacquer putty for use on etc.), chemical powder material (pigment, titanium dioxide, carbon black
Deng), flour, all dry powders such as powder feed and powder and aggregate (< 5mm) mixture.
Finally it should be noted that:Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited
System;Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand:It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly
The scope of each embodiment technical solution of type.
Claims (10)
1. a kind of air supporting pulse automatic ration packing machine, which is characterized in that including tank body, air permeable plate, sealing cover and storage
Gas tank;
Butterfly valve is installed, the tank wall is equipped with discharge port, and the tank base is equipped with angle, described at the top of the tank body
Gas plate by flange assembly be mounted on the angle on, the sealing cover be arranged below the air permeable plate and with the flange group
Part connects;
The air accumulator memory contains compressed air, the air accumulator respectively by the gentle floating pneumatic tube of pulse air pressure pipe with it is described
Sealing cover connects, and pulse valve is equipped in the pulse air pressure pipe, solenoid valve and pressure regulator valve, institute are installed on the air supporting pneumatic tube
Pulse valve is stated to set to be synchronous with the solenoid valve.
2. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the butterfly valve and material
Storehouse connects, and the flange assembly includes first flange and second flange, and the first flange is corresponded to mounted on the tank base
The position of the angle, the air permeable plate are mounted in the second flange, and the second flange is connected with the first flange.
3. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the pulse pressure
Check-valves on pipe is installed, check-valves is installed on the air supporting pneumatic tube.
4. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that on the air accumulator
Equipped with safety valve and pressure gauge.
5. the air supporting pulse automatic ration packing machine according to claim 1 or 4, which is characterized in that the gas storage
The air inlet connection pressure regulator valve of tank.
6. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the air permeable plate with
The angle of the discharge port is 135-160 °.
7. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that in the air accumulator
Air pressure is 0.01-0.2MPa.
8. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the solenoid valve connects
PLC controller is connect, the pulse valve connects PLC controller.
9. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the tank body includes
The cylindrical section and conical section being connected, the angle are arranged on the conical section bottom.
10. air supporting pulse automatic ration packing machine according to claim 1, which is characterized in that the discharge port
On discharging control valve is installed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721276497.5U CN207450297U (en) | 2017-09-30 | 2017-09-30 | Air supporting pulse automatic ration packing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721276497.5U CN207450297U (en) | 2017-09-30 | 2017-09-30 | Air supporting pulse automatic ration packing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207450297U true CN207450297U (en) | 2018-06-05 |
Family
ID=62250157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201721276497.5U Active CN207450297U (en) | 2017-09-30 | 2017-09-30 | Air supporting pulse automatic ration packing machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207450297U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107554829A (en) * | 2017-09-30 | 2018-01-09 | 薛金松 | Air supporting pulse automatic ration packing machine |
-
2017
- 2017-09-30 CN CN201721276497.5U patent/CN207450297U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107554829A (en) * | 2017-09-30 | 2018-01-09 | 薛金松 | Air supporting pulse automatic ration packing machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207450297U (en) | Air supporting pulse automatic ration packing machine | |
CN202895007U (en) | Sand-blasting or shot-blasting continuous shot generation device | |
CN212779836U (en) | Automatic air pressure adjusting device | |
CN107601072A (en) | A kind of screw powder feeder for high pressure operating mode | |
CN207226492U (en) | A kind of close mutually defeated grey process system of novel positive pressure | |
CN107554829A (en) | Air supporting pulse automatic ration packing machine | |
CN108266639B (en) | Gas power generation system for environmentally friendly air mixture | |
CN207623147U (en) | A kind of sand dust test chamber | |
CN205060055U (en) | A bag packagine machine is irritated to automatic ration of low pressure pulse air supporting formula | |
CN206068248U (en) | Gas mixing device and gas-control packing device | |
CN204211169U (en) | Continuous impulse formula leakproofness powder feeding device | |
CN207242533U (en) | A kind of flour bin arch prevention and elimination all-in-one machine | |
CN110141990A (en) | Slurries preparation and mortar depositing construction integral system | |
CN216415636U (en) | Wind power material distribution system | |
CN206274086U (en) | A kind of air operated reversing valve | |
CN104648855A (en) | Seal charging valve | |
CN207438151U (en) | A kind of natural gas transportation pipe joint | |
CN2085788U (en) | Pulse pneumatic conveying pump | |
CN203924003U (en) | A kind of full-automatic integrated form air filling type rubber dam fill-drain syctem | |
CN203256668U (en) | Large dock pneumatic control type dock gate hydraulic experimental model | |
CN103243674B (en) | Hydraulic test model for large pneumatic dock flap gate | |
CN105151798A (en) | Dry pulverized coal conveying device and usage method thereof | |
CN202349363U (en) | Pneumatic flow control valve | |
CN207049411U (en) | A kind of pressure piping check-valves | |
CN206320395U (en) | A kind of tubule road air bleeding valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |