CN203874824U - Screening, distributing and crushing integrated machine - Google Patents
Screening, distributing and crushing integrated machine Download PDFInfo
- Publication number
- CN203874824U CN203874824U CN201420324027.1U CN201420324027U CN203874824U CN 203874824 U CN203874824 U CN 203874824U CN 201420324027 U CN201420324027 U CN 201420324027U CN 203874824 U CN203874824 U CN 203874824U
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- screening
- discaling roll
- crushing
- belt pulley
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Abstract
The utility model discloses a screening, distributing and crushing integrated machine. The screening, distributing and crushing integrated machine comprises a housing (3), a screening distributor (4) at the top of the housing (3), and a discharging port (9) at the bottom of the housing (3). A crushing device driven by a power device is arranged between the screening distributor (4) and the discharging port (9), and the crushing device is of a four-tooth-roll structure and comprises a first-stage double-tooth-roll structure for rough crushing, and a second-stage double-tooth-roll structure which is arranged under the first-stage double-tooth-roll structure and used for fine crushing. The screening, distributing and crushing integrated machine integrates screening, distributing and crushing into a whole, thereby being small in space occupation, low in operating cost and small in the quantity of fault points. The screening, distributing and crushing integrated machine is low in working dust raising and can automatically clear materials adhered to working rolls and greatly reduce the air pressure difference between a feeding port and a discharging port, thereby avoiding raised dust during a material crushing process, achieving energy conservation and environmental protection, avoiding bonding of materials onto the tooth rolls even when the materials are high in moisture content, and further avoiding blocking and locking of the tooth rolls.
Description
Technical field
The utility model belongs to crushing mechanism field, particularly relates to a kind of four rod-toothed crushers, and this disintegrating machine can be widely used in thermal power generation or coalification industrial circle, is particularly useful for adopting circulating fluidized bed boiler as the industrial circle of fuel-device.
Background technology
Fluidized Bed Boiler is since the sixties in last century, at China's part power equipment, use successively, due to its have applicable coal extensively, mechanization and the advantage such as automaticity is higher, environmental pollution is little, therefore, be generalized to rapidly the industrial circles such as thermal power generation, Coal Chemical Industry.
Known according to circulating fluidized bed boiler coal property, the material of applicable boiler combustion is coal grain rather than coal dust, and this material that just requires to enter in circulating fluidized bed boiler need to be controlled at certain particle size range, will prevent that thinner powder from entering.Current way is the equipped screening plant of front end and the apparatus for distributing at disintegrating machine, the former is for sieving the large granular materials of material and fine granular materials, avoid fine granular materials or powder to enter disintegrating machine, avoid crossing of material to pulverize as far as possible, the latter is undertaken uniform by material, avoid the broken parts inordinate wears such as tooth plate of disintegrating machine, prevent that the uniformity of discharging-material size is adversely affected, to guarantee that discharging-material size meets the combustion requirements of Fluidized Bed Boiler.
By current technology, this screening plant, apparatus for distributing are arranged on the charging aperture front end of Fluidized Bed Boiler together with disintegrating machine, for Fluidized Bed Boiler provides readymade coal grain, its structure is: screening plant, apparatus for distributing and disintegrating machine all take a floor separately, therefore, whole broken link just needs at least three floors, and its floor space is very large, civil engineering drops into higher, and crushing circuit is comparatively complicated; And screening plant, apparatus for distributing and disintegrating machine are relatively independent, whole broken work equipment needed thereby quantity is more, and not only production cost height and maintenance cost are higher, and trouble point is more, are unfavorable for carrying out smoothly of production; Be further; above-mentioned disintegrating machine is when work; the airborne dust that whole crusher chamber and charging aperture produce is very big; if the water content of material is higher, also can be bonded on broken working roll, while not only very easily causing working roll operation, resistance is larger; and easily stop up even stuck; after its work a period of time, after needing to shut down, manually working roll is cleared up, greatly reduced operating efficiency.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of all-in-one that integrates screening, cloth and fragmentation, this all-in-one floor space is little, and operating cost is low, and trouble point is few, and can effectively realize screening, cloth and the integrated production of broken three process of material, it is little that it has work airborne dust, and the material boning on can Automatic clearance working roll is particularly suitable for being arranged on the front end of Fluidized Bed Boiler, can effectively prevent the pulverizing of crossing of material, avoid superfine-material to enter Fluidized Bed Boiler.
The utility model is to realize by such technical scheme: a kind of screening, cloth, crushing all-in-one machine, comprise housing, be positioned at the screening distributor and the discharging opening that is positioned at housing bottom of case top, wherein, the breaker being driven by power set is set between screening distributor and discharging opening, described breaker is four discaling roll structures, comprise for the one-level double teeth roller structure of coarse crushing and be positioned at one-level double teeth roller structure below, and for secondary double teeth roller structure in small, broken bits, , whole all-in-one is two driving four drive mechanisms, greatly reduce occupation area of equipment and production cost.
Be further, described one-level double teeth roller structure comprises before the one-level that is arranged in parallel discaling roll after discaling roll and one-level, described secondary double teeth roller structure comprises before the secondary that is arranged in parallel discaling roll after discaling roll and secondary, and secondary double teeth roller structure be positioned at one-level double teeth roller structure under, material is first after the coarse crushing of one-level double teeth roller structure, and vertical drop is carried out in small, broken bits to secondary double teeth roller structure.
As the improvement of such scheme, after discaling roll and one-level, wherein one end of discaling roll respectively arranges an IV belt pulley before described one-level, and these two IV belt pulleys are positioned at before one-level the contrary termination direction of discaling roll after discaling roll and one-level; After discaling roll and secondary, the two ends of discaling roll all arrange an II belt pulley and an III belt pulley before described secondary, and wherein, an II belt pulley and an III belt pulley are positioned at before secondary the same termination direction of discaling roll after discaling roll and secondary.
Improvement as such scheme, described power set are divided into two groups of left and right that are positioned at secondary double teeth roller both sides, every group includes a motor and an I belt pulley, wherein, the I belt pulley of homonymy is connected with II belt pulley by I belt, and the III belt pulley of homonymy is connected with IV belt pulley by II belt.
Improvement as such scheme, described I belt pulley, III belt pulley are consistent with the diameter of IV belt pulley, the diameter of this three's diameter and II belt pulley is inconsistent, former three is all set to 1:3 with the diameter of II belt pulley than preferably, can automatically remove like this material that may bond on double teeth roller, not sticky not stifled, and the eddy current can automotive resistance discaling roll producing, thereby it is minimum that the import and export leeway that can make disintegrating machine drops to, during disintegrating machine work, import and export and substantially do not have airborne dust.
As the improvement of such scheme, before described one-level, before discaling roll and secondary, discaling roll is all arranged on housing by fixed bearing block; After described one-level, after discaling roll and secondary, discaling roll is all arranged on housing by the floating bearing bracket that can seesaw.
As the improvement of such scheme, yielding device is all set between described fixed bearing block and floating bearing bracket.
Improvement as such scheme, described screening distributor comprises the reducing motor being connected with rotor by shaft coupling, and wherein, two ends of rotor is covered bearing block and stifle bearing block support is arranged on housing by logical, on rotor, be fixedly connected with sieve plate, the gap between adjacent sieve plate is split into sieve aperture.
As the improvement of such scheme, described rotor is divided into many groups, and every group of structure is identical, and disposed at equal distance, and staged setting from top to bottom side by side forms nature angle of declination.
As the improvement of such scheme, between described screening distributor and one-level double teeth roller structure, material guide device is set.
The screening that the utility model provides, cloth, crushing all-in-one machine integrate screening, cloth, fragmentation, floor space is little, operating cost is low, trouble point is few, and can effectively realize screening, cloth and the integrated production of broken three process of material, and it is little that it has work airborne dust, the material boning on can Automatic clearance working roll, be particularly suitable for being arranged on the front end of Fluidized Bed Boiler, can effectively prevent the pulverizing of crossing of material, avoid superfine-material to enter Fluidized Bed Boiler, and, the eddy current that all discaling rolls produce also can be cancelled out each other substantially, the leeway of whole all-in-one feed inlet and outlet reduces greatly, thereby can not produce airborne dust in the broken course of work of material, energy-conserving and environment-protective, and, the differential motion of discaling roll has realized the Automatic clearance of one-level double teeth roller and secondary double teeth roller in shattering process, even if the water content of material is large, can not be bonded on discaling roll yet, more can not cause the obstruction of discaling roll and stuck, it can reduce the resistance of motion and the frictional force of discaling roll automatically, further reach energy-conservation object, can also protect the equipment such as motor, in use without carrying out labor cleaning, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the appearance assumption diagram of screening described in this case, cloth, crushing all-in-one machine.
Fig. 2 is the connection layout of frame, motor and I belt pulley.
Fig. 3 is the structural representation of one-level double teeth roller.
Fig. 4 is the structural representation of secondary double teeth roller.
Fig. 5 is the structural representation of screening distributor.
Fig. 6 is power transmission arrangment figure.
Fig. 7 is the internal structure sketch of this case all-in-one.
In Fig. 1 to Fig. 7, parts are labeled as: 1 is motor, 2 is I belt, 3 is housing, 4 is screening distributor, 5 is II belt, 6 is material guide device, 7 is crusher chamber, 8 is bypass chamber, 9 is discharging opening, 10 is motor rack, 11 is I belt pulley, 12 is discaling roll before one-level, 13 is fixed bearing block, 14 is yielding device, 15 is IV belt pulley, 16 is floating bearing bracket, 17 is discaling roll after one-level, 18 is discaling roll before secondary, 19 is II belt pulley, 20 is III belt pulley, 21 is discaling roll after secondary, 22 is reducing motor, 23 is shaft coupling, 24 is the logical bearing block that covers, 25 is rotor, 26 is stifle bearing block, 27 is sieve plate, 28 is sieve aperture.
The specific embodiment
In order to be more expressly understood the purpose of this utility model, technical scheme and beneficial effect, below in conjunction with accompanying drawing, the utility model is described further, but protection domain of the present utility model is not limited in following examples.
As shown in Figures 1 to 7.
Embodiment mono-:
A kind of screening, cloth, crushing all-in-one machine, comprise housing 3, be positioned at the screening distributor 4 and the discharging opening 9 that is positioned at housing 3 bottoms at housing 3 tops, wherein, the breaker being driven by power set is set between screening distributor 4 and discharging opening 9, described breaker is four discaling roll structures, comprise for the one-level double teeth roller structure of coarse crushing and be positioned at one-level double teeth roller structure below, and for secondary double teeth roller structure in small, broken bits, , whole all-in-one is two driving four drive mechanisms, collection screening, cloth and being broken for all over the body, can greatly reduce floor space, save production cost, wherein, breaker is positioned at the bottom of housing 3, screening distributor 4 is positioned at the top of housing 3.
Be further, described one-level double teeth roller structure comprises before the one-level that is arranged in parallel discaling roll 17 after discaling roll 12 and one-level, described secondary double teeth roller structure comprises before the secondary that is arranged in parallel discaling roll 21 after discaling roll 18 and secondary, and secondary double teeth roller structure be positioned at one-level double teeth roller structure under, material is after the coarse crushing of one-level double teeth roller, directly drop to secondary double teeth roller structure, carry out a thin step in small, broken bits, realize double crushing.
Further, after discaling roll 12 and one-level, wherein one end of discaling roll 17 respectively arranges an IV belt pulley 15 before described one-level, and these two IV belt pulleys 15 are positioned at before one-level the contrary termination direction of discaling roll 17 after discaling roll 12 and one-level, before described secondary, after discaling roll 18 and secondary, the two ends of discaling roll 21 all arrange an II belt pulley 19 and an III belt pulley 20, wherein, II belt pulley 19 and an III belt pulley 20 are positioned at before secondary the same termination direction of discaling roll 21 after discaling roll 18 and secondary, power set are divided into two groups of left and right that are positioned at secondary double teeth roller both sides, two groups of structures are identical, every group includes a motor 1 and an I belt pulley 11, the lower of motor 1 can arrange a motor rack 10, be used for fixedly mounting motor 1, I belt pulley 11 is fixedly mounted on motor 1, wherein, the I belt pulley 11 of homonymy is connected with II belt pulley 19 by I belt 2, the III belt pulley 20 of homonymy is connected with IV belt pulley 15 by II belt 5, each group drives one group of double teeth roller rotation separately, so just can only adopt two motors 1, can reach the object that drives the motion of two-stage double teeth roller, avoided equipment repeat arrange and cost is wasted, and, I belt pulley 11, III belt pulley 20 and IV belt pulley 15 threes' diameter is 1:3 with the diameter ratio of II belt pulley 19, when motor 1 rotating speed is when consistent, before secondary, after discaling roll 18 and secondary, the rotating speed of discaling roll 21 is inconsistent, therefore, be delivered to before one-level after discaling roll 12 and one-level the speed of discaling roll 17 also inconsistent, the linear velocity that realizes each discaling roll is not identical yet, because turning to of discaling roll 17 after discaling roll before one-level 12 and one-level is inwards rotation, before secondary, after discaling roll 18 and secondary, turning to of discaling roll 21 is also inwards rotation.
The power set that are positioned at secondary double teeth roller left side drive the drive line of above-mentioned double teeth roller structure rotation to be: discaling roll 12 before discaling roll 18 → III belt pulley 20 → II belt 5 → one-level before motor 1 → I belt pulley 11 → I belt 2 → II belt pulley 19 → secondary.
The power set that are positioned at secondary double teeth roller right side drive the drive line of above-mentioned double teeth roller structure rotation to be: discaling roll 17 after discaling roll 21 → III belt pulley 20 → II belt 5 → one-level after motor 1 → I belt pulley 11 → I belt 2 → II belt pulley 19 → secondary.
Therefore, the eddy current that all discaling rolls produce also can be cancelled out each other substantially, the leeway of whole all-in-one feed inlet and outlet 9 reduces greatly, thereby can not produce airborne dust in the course of work, energy-conserving and environment-protective, and, the differential motion of discaling roll has realized the Automatic clearance of one-level double teeth roller and secondary double teeth roller in shattering process, even if the water content of material is large, can not be bonded on discaling roll yet, more can not cause the obstruction of discaling roll and stuck, it can reduce the resistance of motion and the frictional force of discaling roll automatically, further reach energy-conservation object, can also protect motor 1 equipment such as grade, in use without carrying out labor cleaning, operating efficiency is high.
Embodiment bis-:
Refer to Fig. 3 and Fig. 4, in the scheme of embodiment 1, do certain improvement, be specially: before one-level, before discaling roll 12 and secondary, discaling roll 18 is all arranged on housing 3 by fixed bearing block 13, after described one-level, after discaling roll 17 and secondary, discaling roll 21 is all arranged on housing 3 by the floating bearing bracket 16 that can seesaw, between fixed bearing block 13 and floating bearing bracket 16, yielding device 14 is set, yielding device 14 is as a kind of protection structure to discaling roll, while containing larger harder objuct matter in material, discaling roll 17 after floating bearing bracket 16 drives one-level under the effect of yielding device 14 or/and after secondary discaling roll 21 step back motion, thereby the spacing between discaling roll 17 after discaling roll 12 and one-level before increasing one-level, make more greatly or harder material passes through smoothly, can not cause one-level double teeth roller stuck and cause shutdown, can damage equipment yet.
Embodiment tri-:
Refer to Fig. 5 to Fig. 7, be further, described screening distributor 4 comprises the reducing motor 22 being connected with rotor 25 by shaft coupling 23, wherein, rotor 25 two ends are supported and are arranged on housing 3 by logical bearing block 24 and the stifle bearing block 26 of cover, on rotor 25, be fixedly connected with sieve plate 27, the gap between adjacent sieve plate 27 is split into sieve aperture 28; Rotor 25 is divided into many groups, and every group of structure is identical, and disposed at equal distance, and staged setting from top to bottom side by side forms nature angle of declination; Thereby can make material to preacceleration, roll and fall under the rotational component of rotor 25 and the acting in conjunction of material self gravitation, realize better screening and cloth; Between screening distributor 4 and one-level double teeth roller structure, material guide device 6 is set, the larger material of screening distributor 4 and disintegrating machine changeover portion is imported to crusher chamber 7 and carry out fragmentation, more tiny material enters bypass chamber 8 by the sieve aperture 28 between sieve plate 27 and flows away, no longer carry out fragmentation, therefore, effectively avoid the mistake crushing phenomenon of tiny material, more alleviated the power consumption of disintegrating machine, saved cost.
During work, start the motor 1 of the left and right sides simultaneously, the power of motor 1 output in left side drives I belt pulley 11 rotations in left side, again the I belt 2 by left side by transmission of power the II belt pulley 19 to left side, thereby discaling roll 18 and 20 rotations of right side III belt pulley before drive secondary, and the II belt 5 on right side is the IV belt pulley 15 to right side by transmission of power, thereby before driving one-level, discaling roll 12 rotates; In like manner, the power of motor 1 output on right side drives I belt pulley 11 rotations on right side, by the I belt 2 on right side, pass to again the II belt pulley 19 on right side, thereby III belt pulley 20 rotations in discaling roll 21 and left side after drive secondary, left side III belt pulley 20 and II belt 5 by rotation arrives transmission of power the IV belt pulley 15 in left side again, thereby discaling roll 17 rotations after drive one-level, disintegrating machine enters Light Condition; Before one-level after discaling roll 12, one-level before discaling roll 17 and secondary after discaling roll 18, secondary as shown in the rotation direction arrow as thick in Fig. 7 of discaling roll 21.
Now, start the reducing motor 22 of screening distributor 4, reducing motor 22 rotor drivens 25 rotate forward, the rotor 25 of rotation produces a rotational component forward, trend from the material of screening distributor 4 front ends in equipment is as shown in the thin arrow in Fig. 7, material is trickled down on rotor 25, under the acting in conjunction of this rotational component and material self gravitation, material rolls forward and falls, larger material arrives rotor 25 afterbodys and naturally falls, or drop on natural landing on material guide device 6 inclined-planes, left side and enter crusher chamber 7, less material is discharged from the sieve aperture 28 between sieve plate 27 in rolling process, drop to bypass chamber 8, or drop on natural landing on material guide device 6 inclined-planes, right side and enter bypass chamber 8, no longer enter disintegrating machine and carry out fragmentation, thereby effectively prevent the pulverizing of crossing of material, in this screening process, material is with rotor 25 rotations, be uniformly distributed in the total length with rotor 25, finally fall to after discaling roll 12 before one-level, one-level in discaling roll 17 length range, after the coarse crushing of one-level double teeth roller structure, fall to after discaling roll 18 and secondary, between discaling roll 21, carry out before the secondary of secondary double teeth roller structure in small, broken bits, before secondary, after discaling roll 18 and secondary, the gap of discaling roll 21 can be adjusted as required, material after fragmentation is discharged from bottom discharging opening 9, thereby realize whole screening, cloth, broken three grades of operation one machines, completes.
It above, is only the preferred embodiment of the utility model/utility model; not in order to limit the utility model/utility model; all any modifications within the utility model/utility model spirit and principle, be equal to and replace and improvement, within all should being included in the protection domain of the utility model/utility model.
Claims (10)
1. a screening, cloth, crushing all-in-one machine, comprise housing (3), be positioned at the screening distributor (4) at housing (3) top and be positioned at the discharging opening (9) of housing (3) bottom, wherein, the breaker being driven by power set is set between screening distributor (4) and discharging opening (9), it is characterized in that: described breaker is four discaling roll structures, comprise for the one-level double teeth roller structure of coarse crushing and be positioned at one-level double teeth roller structure below and for secondary double teeth roller structure in small, broken bits.
2. screening as claimed in claim 1, cloth, crushing all-in-one machine, it is characterized in that: described one-level double teeth roller structure comprises before the one-level that is arranged in parallel discaling roll (17) after discaling roll (12) and one-level, described secondary double teeth roller structure comprises before the secondary that is arranged in parallel discaling roll (21) after discaling roll (18) and secondary, and secondary double teeth roller structure be positioned at one-level double teeth roller structure under.
3. screening as claimed in claim 2, cloth, crushing all-in-one machine, it is characterized in that: after discaling roll (12) and one-level, wherein one end of discaling roll (17) respectively arranges an IV belt pulley (15) before described one-level, these two IV belt pulleys (15) are positioned at the contrary termination direction of discaling roll (17) after the front discaling roll (12) of one-level and one-level; Before described secondary, after discaling roll (18) and secondary, the two ends of discaling roll (21) all arrange an II belt pulley (19) and an III belt pulley (20), wherein, an II belt pulley (19) and an III belt pulley (20) are positioned at before secondary the same termination direction of discaling roll (21) after discaling roll (18) secondary.
4. screening as claimed in claim 3, cloth, crushing all-in-one machine, it is characterized in that: described power set are divided into two groups of left and right that are positioned at secondary double teeth roller both sides, every group includes a motor (1) and an I belt pulley (11), wherein, the I belt pulley (11) of homonymy is connected with II belt pulley (19) by I belt (2), and the III belt pulley (20) of homonymy is connected with IV belt pulley (15) by II belt (5).
5. screening as claimed in claim 4, cloth, crushing all-in-one machine, is characterized in that: described I belt pulley (11), III belt pulley (20) and IV belt pulley (15) three's diameter and the diameter ratio of II belt pulley (19) are 1:3.
6. screening, cloth, the crushing all-in-one machine as described in claim 2,3,4 or 5, is characterized in that: before described one-level, before discaling roll (12) and secondary, discaling roll (18) is all arranged on housing (3) by fixed bearing block (13); After discaling roll after described one-level (17) and secondary, discaling roll (21) is all arranged on housing (3) by the floating bearing bracket (16) that can seesaw.
7. screening as claimed in claim 6, cloth, crushing all-in-one machine, is characterized in that: between described fixed bearing block (13) and floating bearing bracket (16), yielding device (14) is set.
8. screening as claimed in claim 6, cloth, crushing all-in-one machine, it is characterized in that: described screening distributor (4) comprises the reducing motor (22) being connected with rotor (25) by shaft coupling (23), wherein, rotor (25) two ends are supported and are arranged on housing (3) by logical bearing block (24) and the stifle bearing block (26) of cover, on rotor (25), be fixedly connected with sieve plate (27), the gap between adjacent sieve plate (27) is split into sieve aperture (28).
9. screening as claimed in claim 8, cloth, crushing all-in-one machine, is characterized in that: described rotor (25) is divided into many groups, and every group of structure is identical, and disposed at equal distance, and staged setting from top to bottom side by side forms nature angle of declination.
10. screening as claimed in claim 1, cloth, crushing all-in-one machine, is characterized in that: between described screening distributor (4) and one-level double teeth roller structure, material guide device (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324027.1U CN203874824U (en) | 2014-06-18 | 2014-06-18 | Screening, distributing and crushing integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324027.1U CN203874824U (en) | 2014-06-18 | 2014-06-18 | Screening, distributing and crushing integrated machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203874824U true CN203874824U (en) | 2014-10-15 |
Family
ID=51675370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420324027.1U Expired - Fee Related CN203874824U (en) | 2014-06-18 | 2014-06-18 | Screening, distributing and crushing integrated machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203874824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001582A (en) * | 2014-06-18 | 2014-08-27 | 四川皇龙智能破碎技术股份有限公司 | Sieving, distributing and breaking all-in-one machine |
| CN109663660A (en) * | 2019-02-13 | 2019-04-23 | 郑龙 | A kind of device and method for removing corn stover siphonal lobe and isolating crust and inner core |
-
2014
- 2014-06-18 CN CN201420324027.1U patent/CN203874824U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001582A (en) * | 2014-06-18 | 2014-08-27 | 四川皇龙智能破碎技术股份有限公司 | Sieving, distributing and breaking all-in-one machine |
| CN104001582B (en) * | 2014-06-18 | 2016-08-17 | 四川皇龙智能破碎技术股份有限公司 | Screening, cloth, crushing all-in-one machine |
| CN109663660A (en) * | 2019-02-13 | 2019-04-23 | 郑龙 | A kind of device and method for removing corn stover siphonal lobe and isolating crust and inner core |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20170618 |