CN101948244A - Inclined concave-convex roller press and granule kiln-feeding system with same - Google Patents
Inclined concave-convex roller press and granule kiln-feeding system with same Download PDFInfo
- Publication number
- CN101948244A CN101948244A CN 201010294606 CN201010294606A CN101948244A CN 101948244 A CN101948244 A CN 101948244A CN 201010294606 CN201010294606 CN 201010294606 CN 201010294606 A CN201010294606 A CN 201010294606A CN 101948244 A CN101948244 A CN 101948244A
- Authority
- CN
- China
- Prior art keywords
- roller
- concavo
- hole
- convex
- tilting
- 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
- Glanulating (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses an inclined concave-convex roller press which comprises an under roller and a pinch roller, wherein the circumferential surface of the under roller is provided with a pit, and the circumferential surface of the pinch roller is provided with a lug boss; the pinch roller is arranged inclinedly above the under roller; the pinch roller is meshed with the under roller through the pit and the lug boss; a rolling space is formed between the meshing part of the lug boss top and the pit bottom; and a cloth region is arranged in front of the meshing part. The roller press can extrude powdery glass batch into high-density granules, has the advantages of simple structure, high production efficiency and high forming rate, and can obviously reduce the production cost of granules as compared with other modes for producing granules. The invention also discloses a granule kiln-feeding system with the inclined concave-convex roller press.
Description
Technical field
The present invention relates to the feedstock production field of glass manufacturing concern, particularly relate to a kind of tilting concavo-convex roller press of taking turns that pellet is gone into kiln system that is used for.In addition, the invention still further relates to and a kind ofly be provided with above-mentioned tilting concavo-convex pellet of taking turns roller press and go into kiln system.
Background technology
At present, world's glass output reached annual several hundred million ton, since 2008, China's glass output has leapt to the first in the world, be approximately annual 5000 ten thousand tons to 6,000 ten thousand tons, as a kind of large-scale industry, it produces the requirement of whether satisfying energy-saving and emission-reduction is a very important technical indicator.
China is since last century, the '30s glass industry was born, and the admixtion of glass is continued to use the mode of powdery bulk cargo always and fed in raw material in kiln, and this is a kind of mode that comparatively falls behind, and there is following shortcoming in it:
At first, the little (about 0.9～0.11gcm of powder-material volume density
3), thermal conductivity little (0.24W/m ℃), it is slow to conduct heat, and fusing is slow, and powder-material can a large amount of heat energy of waste in the melting process in kiln.
Secondly, in the transportation of powder-material before going into kiln, dust from flying is serious, and both contaminate environment was corroded one tunnel hardware again.
Moreover in entering kiln and there is the dust from flying problem in powder-material before the fusing equally, can corrode the kiln body, stops up regenerator, reduce furnace service life.
At last, the material side that works good according to the glass ingredient ratio, through after the dust from flying, those more expensive and volatile compositions (as soda ash, borax etc.) all can be subjected to loss in various degree, understand the correct component proportions of havoc glass batch, cause the degradation of glass material.
In view of there is above-mentioned critical defect in powder-material, Zong people wish to take measures to overcome it, this measure is prepared into particulate material with powder-material exactly, i.e. the powder granulation engineering that is called for short in the industry.
The method of powder-material being made particulate material mainly contains three kinds: punching press, spin, roll extrusion.Wherein, punching press can obtain very closely knit particle, but it exists that efficient is low, complex structure, shortcoming that cost is high, because the glass industry profit margin is less, generally all can not accept expensive impact molding.Rolling ball method has higher forming efficiency, can satisfy environmental requirement, but particle is more loose, does not reach the granulation requirement of glass industry, and energy-saving effect is obvious inadequately, has complex structure, shortcoming that cost is high equally, and iron industry adopts this method more.
For rolling depression method, last century the eighties, the Shanghai Huadong Chemical College was once done granulation experiment, with the powdery admixtion of moisture 6-7%, passed through 400-500kg/cm
2Pressure compacting, make the volume density of pellet reach 1.9-2.1kg/cm
3Ratio of briquetting reaches 80%, and by Shanghai fuel corporation cooperation design, produce a roll extrusion unit,, roll extrusion reinforced by finishing, sieve, the equipment of process such as feed back combines, in its combined system, the structure design of roller press is unreasonable, and feeding method also has problems, and fails to drop into actual use.
Therefore, how the powdered glass batch being squeezed into the particulate material of high-compactness, simultaneously, improving granulation efficient as much as possible and reduce cost, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of tilting concavo-convex roller press of taking turns.This roller press can be squeezed into the powdered glass batch particulate material of high-compactness, and simple in structure, production efficiency and shaping rate height, can significantly reduce production costs.
To achieve these goals, the invention provides a kind of tilting concavo-convex roller press of taking turns, comprise support roller and pinch roller, the periphery of described support roller is provided with the material hole, and the periphery of described pinch roller is provided with boss; Described pinch roller is arranged in the oblique upper of described support roller, and both are meshed by material hole and boss, forms the roll extrusion space between the boss top at its engagement position and the bottom, material hole, and the front side at engagement position is the cloth district.
Preferably, the angular range of the line of centres of described support roller and pinch roller and vertical axis is between 30-45 °.
Preferably, the material hole on the described support roller is made of the rib and the hole bar that are fixed on its periphery, and described rib forms the sidewall that described material is cheated axial two sides, and described hole bar forms described material and cheats the radially sidewall and the bottom of two sides.
Preferably, the boss on the described pinch roller is made of the boss stripe that is embedded on its periphery.
Preferably, bottom, the material of described support roller hole is provided with the hull and pulp removing machine structure.
Preferably, described hull and pulp removing machine structure comprises material discharging rod, spring and the concavo-convex bar that can move around in described support roller inside, described material discharging rod is arranged in the radial direction through hole of offering bottom, described material hole, and its head is positioned at bottom, described material hole, the lower end is supported on the described concavo-convex bar; Described spring housing is contained on the described material discharging rod, and its upper end is supported on the port of described through hole, and the lower end is supported on the limited step of described material discharging rod.
Preferably, described material discharging rod is "T"-shaped on the vertical section.
Preferably, the radial dimension in described material hole upwards increases gradually from the bottom.
Preferably, described material is cheated the mode uniform distribution on the periphery of described support roller with dot matrix; Described boss is with mode uniform distribution on the periphery of described pinch roller of dot matrix.
The present invention also provides a kind of pellet to go into kiln system, comprises the precompressed feeding machine and the screening dryer that rolls, and is provided with above-mentioned each described tilting concavo-convex roller press of taking turns between described precompressed feeding machine and the rolling screening dryer.
The tilting concavo-convex roller press of taking turns provided by the present invention adopts the form of concavo-convex engagement to come roll extrusion powdered glass batch, after material hole on its support roller is covered with glass batch, when moving to the engagement position, by the glass batch in the protruding pressing material hole on the pinch roller, make it in the material hole, be squeezed into the pellet of high-compactness, through after the roll extrusion of pinch roller, support roller is rotated further, when the material hole is in the position that Open Side Down substantially, pellet is deviate from from the material at its place hole and is entered subsequent processing, so move in circles, control support roller and pinch roller continuous operation output are continuously gone into the required pellet of kiln.Because pinch roller is arranged in the oblique upper of support roller; therefore can form the cloth district in the front side at engagement position (being the support roller top); this cloth district is feed hole cloth reasonably; and horse back enters extrusion process behind cloth; and the deadweight of pinch roller can allow roller press etc. obtain the compensation of squeeze; it is simple in structure, production efficiency is high, be granulated into the form quotient height, and particle is finer and close, can significantly reduce production costs.
In a kind of embodiment, the material hole on the described support roller is made of the rib and the hole bar that are fixed on its periphery, and described rib forms the sidewall around the described material hole, and described hole bar forms the bottom in described material hole.Above-mentioned rib and hole bar have following function: a, constitute the material hole of easily taking off material of gathering; The rotation that b, transmission pass over from the support roller wheel hub; C, easy disassembly.Maintenance; Methods such as d, usefulness high-strength material, quenching, chromium plating are made, and can reach wear-resistant, long-life requirement.
In another kind of embodiment, the boss on the described pinch roller is made of the boss stripe that is embedded on its periphery.Above-mentioned boss stripe has following function: a, forms the boss that gathers on pinch roller, when carrying out gear motion with support roller, the powder-material in the support roller material hole is formed squeezing action, and powder-material is squeezed into particulate material; The rotation that b, transmission are transmitted from the pinch roller wheel hub; Methods such as c, usefulness high-strength material, quenching, chromium plating are made, and can make machine reach wear-resistant, long-life requirement; D, easy disassembly, maintenance.
Pellet provided by the present invention is gone into kiln system and is provided with the above-mentioned tilting concavo-convex roller press of taking turns, because the above-mentioned tilting concavo-convex roller press of taking turns has above-mentioned technique effect, has this tilting concavo-convex pellet of taking turns roller press and goes into kiln system and also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is a tilting concavo-convex structural representation of taking turns roller press provided by the present invention;
Fig. 2 is the partial schematic sectional view of support roller;
Fig. 3 is the partial view of pinch roller;
Fig. 4 is the structural representation that the hull and pulp removing machine structure is set on the support roller.
Pairing component of numeral number or toponym are as follows among the figure:
10. support roller 10-1. material hole 10-1-1. rib 10-1-2. cheats the concavo-convex bar of bar 20. pinch roller 20-1. boss 20-1-1. boss stripes, 30. cloth district 40-1. material discharging rod 40-2. spring 40-3.
Embodiment
Core of the present invention provides the tilting concavo-convex roller press of taking turns.This roller press can be squeezed into the powdered glass batch particulate material of high-compactness, and simple in structure, production efficiency and shaping rate height, can significantly reduce production costs.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The term in expression orientation such as herein " upper and lower, forward and backward " is based on the position relation of accompanying drawing, only is for convenience of description.
Please refer to Fig. 1, Fig. 1 is a tilting concavo-convex structural representation of taking turns roller press provided by the present invention.
In a kind of embodiment, the tilting concavo-convex roller press of taking turns provided by the present invention mainly is made of support roller 10 and pinch roller 20 two partss.
The periphery of support roller 10 is provided with material hole 10-1, material hole 10-1 is uniform distribution on support roller 10 radial and axial, promptly material hole 10-1 gathers on the periphery of support roller 10 in the mode of dot matrix, keep proportional spacing between the 10-1 of material hole, its quantity can reach up to a hundred even thousands of, specifically decides on actual needs.
In said structure, if it is too little that pinch roller 20 is positioned at the angle of support roller 10 oblique uppers, then can't abdicate the space of support roller 10 tops, can not form effective cloth district, if it is too big that pinch roller 20 is positioned at the angle of support roller 10 tops, then occur latch up phenomenon easily, and can't push powder by the deadweight of pinch roller 20.Take all factors into consideration above factor, with pinch roller 20 above support roller 10 to the right the angle of skew to be controlled at 30-45 ° be comparatively suitable.
Because support roller 10 is engaged transmission relations with pinch roller 20, when one of them move, another can rotate thereupon together, so in actual applications, made driving mechanism drive support roller 10 and pinch roller 20 respectively and made both synchronous operation.
The above-mentioned tilting concavo-convex roller press of taking turns adopts the form of concavo-convex engagement to come roll extrusion powdered glass batch, after material hole 10-1 on its support roller 10 is covered with glass batch, when moving to the engagement position, by the glass batch in the 10-1 of the hole of the boss 20-1 pressing material on the pinch roller 20, make it in the 10-1 of material hole, be squeezed into the pellet of high-compactness, through after the roll extrusion of pinch roller 20, support roller 10 is rotated further, when material hole 10-1 is in the position that Open Side Down substantially, pellet is deviate from from the 10-1 of the material at its place hole and is entered subsequent processing, so move in circles, control support roller 10 and pinch roller 20 continuous operation output are continuously gone into the required pellet of kiln.
Because pinch roller 20 is arranged in the oblique upper of support roller 10, therefore can form cloth district 30 in the front side at engagement position (being the support roller top).This cloth district 30 is feed hole 10-1 cloth reasonably; and behind cloth, at once enter extrusion process, and the deadweight of pinch roller 20 can allow roller press etc. obtain the compensation of squeeze, and it is simple in structure, production efficiency is high, be granulated into the form quotient height; and particle is finer and close, can significantly reduce production costs.
Please refer to Fig. 2, Fig. 2 is the partial schematic sectional view of support roller.
As shown in the figure, material hole 10-1 on the support roller 10 is made of the rib 10-1-1 and the hole bar 10-1-2 that are fixed on its periphery, rib 10-1-1 forms the sidewall around the 10-1 of material hole, hole bar 10-1-2 forms the bottom of material hole 10-1, material hole 10-1 is back taper on the cross section, its diameter upwards increases gradually from the bottom, so that powder can successfully be deviate from from the material hole after being pressed into particulate material.
Rib 10-1-1 and hole bar 10-1-2 have following function: a, constitute the material hole of easily taking off material of gathering; The rotation that b, transmission pass over from the support roller wheel hub; C, easy disassembly, maintenance; Methods such as d, usefulness high-strength material, quenching, chromium plating are made, and can reach wear-resistant, long-life requirement.
Please refer to Fig. 3, Fig. 3 is the partial view of pinch roller.
As shown in the figure, the boss 20-1 on the pinch roller 20 is made of the boss stripe 20-1-1 that is embedded on its periphery.
Boss stripe 20-1-1 has following function: a, forms the boss that gathers on pinch roller, when carrying out gear motion with support roller, the powder-material in the support roller material hole is formed squeezing action, and powder-material is squeezed into particulate material; The rotation that b, transmission are transmitted from the pinch roller wheel hub; Methods such as c, usefulness high-strength material, quenching, chromium plating are made, and can make machine reach wear-resistant, long-life requirement; D, easy disassembly, maintenance.
Certainly, the formation of material hole 10-1 and boss 20-1 is not limited to aforesaid way, can also adopt other structure.For example: on support roller, directly process discharging hole, perhaps will have the parts parcel in material hole and be welded on the support roller, perhaps boss directly is welded on the pinch roller or the like by processing modes such as castings.Because attainable means are more, just illustrate no longer one by one here.
In addition, this paper does not do qualification to the material hole and the rectangular shape of boss yet, material hole and boss can be rounded, square on cross section etc. different shape, no matter be which kind of shape is all within protection scope of the present invention.Consider the complexity of taking off material and complete processing, general adopt circular material hole and boss more.
Can successfully from the material hole, deviate from for the assurance particulate material, can also make further improvement the above-mentioned tilting concavo-convex roller press of taking turns.
Please refer to Fig. 4, Fig. 4 is the structural representation that the hull and pulp removing machine structure is set on the support roller.
The hull and pulp removing machine structure comprises material discharging rod 40-1, spring 40-2 and the concavo-convex bar 40-3 that can move around in described support roller inside, material discharging rod 40-1 is arranged in the radial direction through hole of offering 10-1 bottom, material hole, it is "T"-shaped that its head is on the vertical section, be positioned at bottom, material hole, the lower end is supported on the concavo-convex bar 40-3; Spring 40-2 is sleeved on the material discharging rod 40-1, and its upper end is supported on the port of through hole, and the lower end is supported on the limited step of material discharging rod 40-1.
When concavo-convex bar 40-3 to-and-fro movement, promote material discharging rod 40-1 and under the effect of spring 40-2, forms upper and lower motion, when moving upward, release the material grain and fall, reach reset position when moving downward, motion and so forth, the function that material is taken off in realization continuously.
Certainly, the hull and pulp removing machine structure is not limited to aforesaid way.In another kind of mode, the hull and pulp removing machine structure comprises material discharging rod and spring, material discharging rod is arranged in the radial direction through hole of offering bottom, material hole, it is "T"-shaped that its head is on the vertical section, is positioned at bottom, material hole, and the lower end has first magnet, spring housing is contained on the material discharging rod, its upper end is supported on the port of through hole, and the lower end is supported on first magnet, at the following of support roller other opposite polarity second magnet can be set.Like this, during position below material hole moves to support roller, because the second magnet relative fixed, under the effect of magnetic force, first magnet can overcome spring drive material discharging rod and outwards move together, thereby particulate material is ejected from material hole, finish take off material after, the material hole is to the direction operation away from second magnet, after magnetic force disappears, in the effect of spring, material discharging rod resets again, enters next round and treats the material state.
Except the above-mentioned tilting concavo-convex roller press of taking turns, the present invention also provides a kind of pellet to go into kiln system, comprises the precompressed feeding machine and the screening dryer that rolls, and is provided with the above-mentioned tilting concavo-convex roller press of taking turns between precompressed feeding machine and the rolling screening dryer.
Other structure that this pellet is gone into kiln system please refer to prior art, and this paper repeats no more.
More than tilting concavo-convex roller press and the pellet of taking turns provided by the present invention gone into kiln system and is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present invention.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the tilting concavo-convex roller press of taking turns is characterized in that, comprises support roller and pinch roller, and the periphery of described support roller is provided with the material hole, and the periphery of described pinch roller is provided with boss; Described pinch roller is arranged in the oblique upper of described support roller, and both are meshed by material hole and boss, forms the roll extrusion space between the boss top at its engagement position and the bottom, material hole, and the front side at engagement position is the cloth district.
2. the tilting concavo-convex roller press of taking turns according to claim 1 is characterized in that the line of centres of described support roller and pinch roller and the angular range of vertical axis are between 30-45 °.
3. the tilting concavo-convex roller press of taking turns according to claim 1, it is characterized in that, material hole on the described support roller is made of the rib and the hole bar that are fixed on its periphery, described rib forms the sidewall that described material is cheated axial two sides, and described hole bar forms described material and cheats the radially sidewall and the bottom of two sides.
4. the tilting concavo-convex roller press of taking turns according to claim 1 is characterized in that the boss on the described pinch roller is made of the boss stripe that is embedded on its periphery.
5. the tilting concavo-convex roller press of taking turns according to claim 1 is characterized in that, the bottom, material hole of described support roller is provided with the hull and pulp removing machine structure.
6. the tilting concavo-convex roller press of taking turns according to claim 5, it is characterized in that, described hull and pulp removing machine structure comprises material discharging rod, spring and the concavo-convex bar that can move around in described support roller inside, described material discharging rod is arranged in the radial direction through hole of offering bottom, described material hole, and its head is positioned at bottom, described material hole, the lower end is supported on the described concavo-convex bar; Described spring housing is contained on the described material discharging rod, and its upper end is supported on the port of described through hole, and the lower end is supported on the limited step of described material discharging rod.
7. the tilting concavo-convex roller press of taking turns according to claim 6 is characterized in that it is "T"-shaped that described material discharging rod is on the vertical section.
8. according to each described tilting concavo-convex roller press of taking turns of claim 1 to 7, it is characterized in that the radial dimension in described material hole upwards increases gradually from the bottom.
9. according to each described tilting concavo-convex roller press of taking turns of claim 1 to 7, it is characterized in that described material hole is with mode uniform distribution on the periphery of described support roller of dot matrix; Described boss is with mode uniform distribution on the periphery of described pinch roller of dot matrix.
10. a pellet is gone into kiln system, comprises the precompressed feeding machine and the screening dryer that rolls, and it is characterized in that, is provided with aforesaid right requirement 1 to 9 each described tilting concavo-convex roller press of taking turns between described precompressed feeding machine and the rolling screening dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102946062A CN101948244B (en) | 2010-09-27 | 2010-09-27 | Inclined concave-convex roller press and granule kiln-feeding system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102946062A CN101948244B (en) | 2010-09-27 | 2010-09-27 | Inclined concave-convex roller press and granule kiln-feeding system with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101948244A true CN101948244A (en) | 2011-01-19 |
| CN101948244B CN101948244B (en) | 2012-01-25 |
Family
ID=43451895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102946062A Expired - Fee Related CN101948244B (en) | 2010-09-27 | 2010-09-27 | Inclined concave-convex roller press and granule kiln-feeding system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101948244B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390859A (en) * | 2016-12-01 | 2017-02-15 | 郝玉民 | Biomass granulator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1666966A (en) * | 2004-03-12 | 2005-09-14 | 陈协民 | Process for pressing watermark glass and its special pressing device |
-
2010
- 2010-09-27 CN CN2010102946062A patent/CN101948244B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1666966A (en) * | 2004-03-12 | 2005-09-14 | 陈协民 | Process for pressing watermark glass and its special pressing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390859A (en) * | 2016-12-01 | 2017-02-15 | 郝玉民 | Biomass granulator |
| CN106390859B (en) * | 2016-12-01 | 2019-09-27 | 郝玉民 | A kind of biomass granule forming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101948244B (en) | 2012-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102275323A (en) | Biomass granule forming method and equipment | |
| CN102089448A (en) | Briquette manufacturing method, reductive metal manufacturing method, and zinc or lead separation method | |
| CN101948244B (en) | Inclined concave-convex roller press and granule kiln-feeding system with same | |
| KR102630996B1 (en) | Iron ore fine aggregate manufacturing process and agglomeration products | |
| CN103305690A (en) | Pre-pressing forming and intensified sintering method of fine iron ore concentrate | |
| CN101979351B (en) | Prepressing feeder and system for feeding grain material in kiln | |
| JP2007162127A (en) | Method for pretreating raw material for sintering, and method for manufacturing sintered ore | |
| CN201808121U (en) | Improved furnace presintering material sieving automatic mechanical rapping system | |
| CN201728085U (en) | Novel aluminum alloy refining particle flux granulator | |
| CN101643841B (en) | Additive for improving metallurgical performance of all Fe2O3 pellets and use method thereof | |
| CN110616313A (en) | Method for preparing raw materials for producing sintered ore and pellet ore and crushing and mixing machine | |
| CN102515467A (en) | Silicon raw material tailing granulated material, and preparation method and application thereof | |
| CN211538559U (en) | Cold-pressed pellet conveying and screening device | |
| CN108329017A (en) | Isometrical magnesia material of spherical shape and preparation method thereof and the application in producing the magnesia porous plug of disperse formula | |
| CN202770165U (en) | Coal slime dryer scattering device | |
| CN204237841U (en) | For the revert system that pellet is produced | |
| CN108103308B (en) | A kind of device and method for steel-smelting sewage sludge pelletizing | |
| CN202877248U (en) | Load semi-trailer axle rolling mill feeding device | |
| CN212856515U (en) | Processing device for reducing crushing rate of dust mud dry balls | |
| CN219359749U (en) | Automatic rapid extrusion molding manufacturing system for continuous grading phosphogypsum | |
| CN209549423U (en) | A kind of multistation squash type chrome oxide green granulation for powders machine | |
| CN202744470U (en) | Improved rotary drum granulator cylinder | |
| CN101736125B (en) | Method for recycling powdery ferrocolumbium | |
| CN209506859U (en) | A kind of superfine powder homogenizing production and transport pipe | |
| CN207756017U (en) | Stir machine scraper |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20140927 |
|
| EXPY | Termination of patent right or utility model |