CN110315620B - Straw preparation method and system - Google Patents
Straw preparation method and system Download PDFInfo
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- CN110315620B CN110315620B CN201810276158.XA CN201810276158A CN110315620B CN 110315620 B CN110315620 B CN 110315620B CN 201810276158 A CN201810276158 A CN 201810276158A CN 110315620 B CN110315620 B CN 110315620B
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- straw
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- impeller
- drying
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
- A01F29/005—Cutting apparatus specially adapted for cutting hay, straw or the like for disintegrating and cutting up bales of hay, straw or fodder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
Abstract
The invention discloses a method for preparing straw, which comprises the following steps: a first conveying step: conveying the straw raw material to cutting equipment; a cutting step: cutting the straw raw material by using the cutting equipment to prepare a straw material; a second conveying step: conveying the straw material into a drying device through a feeding device; and (3) drying: drying the straw material by using the drying equipment; and a discharging step: discharging the dried straw material from the drying apparatus via a discharge device, wherein the feed device and/or the discharge device comprises a dual rotor discharge valve. The invention also discloses a straw preparation system.
Description
Technical Field
The invention belongs to the field of straw board manufacturing, and particularly relates to a straw material preparation method and system.
Background
The straw material preparation system is one of the most critical processes for producing straw boards, and mainly influences the surface treatment, the shape, the size, the production capacity and the like of straw fibers.
In the existing straw preparation system, a dryer is generally used for drying straws. However, the inlet and outlet of the drying machine in the existing straw preparation system usually adopt open inlet and outlet, which results in more heat energy loss, dust generation, raw material overflow and environmental pollution. In addition, some straw system of prepareeing material begins to use traditional relief valve at the exit of drier, however, under the condition that the exit of desiccator adopted ordinary rotatory relief valve, the easy problem that produces long grass piece putty and bridge up to lead to the feed inlet to appear the putty, influence production normal operating.
Disclosure of Invention
In view of at least one of the above problems, as one aspect of the present invention, there is provided a method for preparing straw, comprising the steps of:
a first conveying step: conveying the straw raw material to cutting equipment;
a cutting step: cutting the straw raw material by using the cutting equipment to prepare a straw material;
a second conveying step: conveying the straw material into a drying device through a feeding device;
and (3) drying: drying the straw material by using the drying equipment; and
a discharging step: discharging the dried straw material from the drying apparatus via a discharge device,
wherein the feeding device and/or the discharging device comprises a double-rotor discharge valve.
The double-rotor discharge valve comprises a cylindrical shell, an inner flow channel and a pair of impellers are arranged in the shell, the pair of impellers are respectively a left impeller and a right impeller, the left impeller and the right impeller are arranged left and right, the left impeller and the right impeller can rotate, and the rotating area of the left impeller is partially overlapped with the rotating area of the right impeller.
The double-rotor discharge valve further comprises a synchronous transmission driving mechanism, the synchronous transmission driving mechanism is located outside the shell, and the synchronous transmission driving mechanism can enable the left impeller and the right impeller to reversely rotate.
In some embodiments, before the first conveying step, a bale breaking step is further included, and the bale breaking step includes manually and/or mechanically breaking up the straw raw material bales.
In some embodiments, in the first conveying step, the straw feedstock is conveyed by a first scraper conveyor into a chopping apparatus; and/or, in the second conveying step, conveying the straw material into the drying equipment through a feeding device by a first belt conveyor.
In some embodiments, after the cutting step and before the second conveying step, further comprising the steps of:
discharging the straw material to an intermediate bin; and
and conveying the straw material in the intermediate bin to the first belt conveyor by using a straw grabbing machine or a material pushing device.
In some embodiments, after the discharging step, further comprising:
conveying the dried straw material to a crushing device through a second belt conveyor; and
and crushing the straw material by using crushing equipment, and discharging the crushed straw material to a storage bin.
In some embodiments, further comprising the steps of: conveying the straw material in the bin to a screening device; and screening the crushed straw material by using the screening equipment.
In some embodiments, further comprising the steps of: conveying the screened straw material to airflow separation equipment through a second scraper conveyor; sorting the straw material using the air flow sorting device; and conveying the sorted straw materials to a dry material storage for storage.
Preferably, the cutting equipment is a straw cutter, and the design capacity of the straw cutter reaches 20-24 tons/hour.
The invention also provides a straw preparation system, which comprises:
the cutting equipment is used for cutting the straw raw material to prepare the straw material;
a drying device for drying the straw material;
a feeding device through which the straw material enters the drying apparatus; and
a discharging device, through which the dried straw material is discharged from the drying equipment,
wherein the feeding device and/or the discharging device comprises a double-rotor discharge valve.
According to an embodiment of the invention, the dual rotor discharge valve comprises an inner flow channel and a pair of impellers capable of rotating relatively to discharge straw passing through the inner flow channel.
The double-rotor discharge valve comprises a cylindrical shell, an inner flow channel and a pair of impellers are arranged in the shell, the pair of impellers are respectively a left impeller and a right impeller, the left impeller and the right impeller are arranged left and right, the left impeller and the right impeller can rotate, and the rotating area of the left impeller is partially overlapped with the rotating area of the right impeller.
The double-rotor discharge valve further comprises a synchronous transmission driving mechanism, the synchronous transmission driving mechanism is located outside the shell, and the synchronous transmission driving mechanism can enable the left impeller and the right impeller to reversely rotate.
In some embodiments, the system further comprises:
and the bale breaking equipment is used for breaking up the straw raw material bales.
In some embodiments, the system further comprises:
the first scraper conveyor is used for conveying the straw raw materials to the cutting equipment;
the first belt conveyor is used for conveying the straw material into the drying equipment through the feeding device.
In some embodiments, the system further comprises:
the intermediate bin is used for storing the straw material;
and the grass grabbing machine or the material pushing machine is used for conveying the straw materials in the middle bin to the first belt conveyor.
In some embodiments, the system further comprises:
the crushing equipment is used for crushing the dried straw material;
the second belt conveyor is used for conveying the dried straw material to the crushing equipment;
and the storage bin is used for storing the crushed straw materials.
In some embodiments, the system further comprises:
and the screening equipment is used for screening the straw material in the storage bin.
In some embodiments, the system further comprises:
the airflow separation equipment is used for separating the screened straw materials;
the second scraper conveyer is used for conveying the screened straw material to the airflow separation equipment;
and the dry storage bin is used for storing the sorted straw materials.
Preferably, the cutting equipment is a straw cutter, and the design capacity of the straw cutter reaches 20-24 tons/hour.
Based on the technical scheme, the invention has at least one of the following beneficial effects:
the material passing capacity of the double-rotor discharge valve can meet the production requirement, and the technical problem of material blanking and material blocking in the straw plate production is solved; the dust and raw materials are prevented from overflowing, and the working environment is improved; meanwhile, because the hot air is not overflowed, the heat loss is reduced, and the drying effect is improved.
Drawings
FIG. 1 is a process flow diagram of a method of straw preparation according to one embodiment of the present invention;
FIG. 2 is a block diagram of a straw preparation system according to one embodiment of the present invention;
FIG. 3 is a front view of a dual rotor discharge valve according to an exemplary embodiment of the present invention; and
fig. 4 is a schematic structural view of a synchronous drive mechanism of a dual rotor discharge valve according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The process flow of the straw preparation method according to one embodiment of the present invention is shown in fig. 1, and the straw preparation method may include the following steps:
first conveyance step S102: conveying the straw raw material to cutting equipment;
a cutting step S103: cutting the straw raw material by using cutting equipment to prepare a straw material;
second conveyance step S106: conveying the straw material into drying equipment through a feeding device;
a drying step S107: drying the straw material by using drying equipment; and
discharge step S108: discharging the dried straw material from the drying equipment through a discharging device,
wherein, feed arrangement and discharging device include birotor relief valve.
According to an embodiment of the invention, the dual rotor discharge valve comprises an inner flow channel and a pair of impellers capable of rotating relatively to discharge straw passing through the inner flow channel.
By using the double-rotor discharge valve, the material passing capacity of the double-rotor discharge valve can meet the production requirement, and the technical problem of material blockage in the straw plate production is solved.
A straw preparation system according to one embodiment of the present invention is shown in fig. 2, the system comprising:
the cutting equipment is used for cutting the straw raw material to prepare the straw material;
a drying device for drying the straw material;
the straw material enters the drying equipment through the feeding device; and
a discharging device, the dried straw material is discharged from the drying equipment through the discharging device,
wherein the feeding means comprises a first dual rotor discharge valve 207 and the discharging means comprises a second dual rotor discharge valve 209.
According to an embodiment of the invention, the dual rotor discharge valve comprises an inner flow channel and a pair of impellers capable of rotating relatively to discharge straw passing through the inner flow channel.
Optionally, the cutting device can be an ZCQ 6-type hay cutter 203, the hay cutter has high capacity, and the designed capacity reaches 20-24 tons/hour; the requirement on uniform feeding of the straws is general, and the inclusion is high; the straw cutter has short cutter changing time of 0.6-1.0h, and is convenient to use; meanwhile, the energy consumption of the equipment is low, and the power of a single straw cutter is 132 kw.
Alternatively, the drying device may be a dryer 208.
With further reference to fig. 3, a dual rotor discharge valve according to an exemplary embodiment of the present invention may include a cylindrical housing 2, the housing 2 including an inner flow passage and a pair of impellers, the pair of impellers being a left impeller 4 and a right impeller 8, respectively, the left impeller 4 and the right impeller 8 being disposed left and right, the left impeller 4 and the right impeller 8 being capable of rotating, and a rotation region of the left impeller 4 partially overlapping a rotation region of the right impeller 8. The shell 2 comprises a feeding section 1, an impeller mounting section 12 and a discharging section 5 which are sequentially arranged from top to bottom, and the left impeller 4 and the right impeller 8 are both positioned in the impeller mounting section 12.
In this embodiment, the edges of the blades 3 of the left impeller 4 and the right impeller 8 are both provided with sealing strips, the sealing strips can be made of the existing soft sealing material, and the blades 3 of the left impeller 4 and the right impeller 8 are both connected with the inner surface of the impeller mounting section 12 in a rotating and sealing manner through the sealing strips. Meanwhile, the blades 3 of the left impeller 4 and the right impeller 8 are connected in a rotating and sealing mode through sealing strips.
With further reference to fig. 4, the dual rotor discharge valve in this embodiment may further include a synchronous drive mechanism located outside the housing 2, the synchronous drive mechanism being capable of rotating the left impeller 4 and the right impeller 8 in opposite directions.
The synchronous transmission driving mechanism comprises a left driven wheel 6, a right driven wheel 9, a redirection idler wheel 10 and a driving wheel 11, wherein the left driven wheel 6, the right driven wheel 9, the redirection idler wheel 10 and the driving wheel 11 are all gears. The left driven wheel 6, the right driven wheel 9, the redirection idler wheel 10 and the driving wheel 11 are located on the same vertical plane, the left driven wheel 6, the right driven wheel 9, the redirection idler wheel 10 and the driving wheel 11 are connected through a transmission chain 7, the left driven wheel 6 is fixedly connected with the end portion of a wheel shaft of the left impeller 4, the right driven wheel 9 is fixedly connected with the end portion of a wheel shaft of the right impeller 8, the redirection idler wheel 10 is fixedly connected with the shell 2 (for example, the wheel shaft of the redirection idler wheel 10 is fixedly connected with a cover plate of the impeller installation section 12), the driving wheel 11 is fixedly connected with an output shaft of the driving motor, the driving wheel 11 is located on the upper right side of the right driven wheel 9, the redirection idler wheel 10 is located right below the right driven wheel 9, the rotation directions of the left driven wheel 6, the redirection idler wheel 10 and the driving wheel 11 are the same, and the rotation directions of the left driven wheel 6 and the right driven wheel 9 are opposite.
Through the design, the synchronous transmission driving mechanism transmits the force for driving the left driven wheel 6 to the right driven wheel 9 and rotates reversely, so that the left driven wheel 6 and the right driven wheel 9 can rotate clockwise/anticlockwise in synchronous operation respectively, and the parts of the two impellers (the left impeller 4 and the right impeller 8) which are matched can move downwards from two sides to the center direction respectively, thereby facilitating the passing of straw materials. And because the soft body part of the sealing blade 3 seals the space between the two rotors, the air flow, dust and heat energy between the upper and lower (or front and rear) devices of the double-rotor discharge valve can not be randomly streamed to cause loss or pollution.
Through using birotor relief valve, form feed inlet and discharge gate through the rotor blade, isolated and communicate with each other the cold wind that leads to with the atmosphere, guarantee that hot-blast not excessive to drying effect has been improved. And moreover, a feed inlet and a discharge outlet are formed by the rotor blades and are isolated from being communicated with the atmosphere, so that the dust and raw materials are prevented from overflowing, and the working environment is improved.
In this embodiment, before the first conveying step, a bale breaking step S101 is further included, and the bale breaking step breaks up the straw raw material bale manually and/or by means of a bale breaker.
In the embodiment, in the first conveying step, the straw raw material is conveyed to the cutting equipment through the first scraper conveyer; in a second conveying step, the straw material is conveyed by the first belt conveyor via a feeding device into the drying apparatus.
In this embodiment, after the cutting step and before the second conveying step, the method further includes the steps of:
s104, discharging the cut straw materials to a middle bin; and
and S105, conveying the straw in the intermediate bin to the first belt conveyor by using a straw grabbing machine or a material pushing device.
In this embodiment, after the discharging step, the method further includes:
s109, conveying the dried straw material to crushing equipment through a second belt conveyor; and
s110, crushing straw materials by using crushing equipment, and discharging the crushed straw materials to a storage bin.
In this embodiment, the method further includes the following steps: s111, conveying the straw materials in the storage bin to screening equipment; and S112, screening the crushed straw materials by using screening equipment.
In this embodiment, the method further includes the following steps: s113, conveying the screened straw to airflow separation equipment through a second scraper conveyor; s114, sorting straw materials by using airflow sorting equipment; and S115, conveying the sorted straw materials to a dry material storage for storage. Different from the existing process, the embodiment adopts a mode of screening firstly and then winnowing, so that the large materials and impurities in the straws are more easily separated.
The system in this embodiment further includes: and the bale breaking equipment is used for breaking up the straw raw material bales.
In this embodiment, the system further includes: a first scraper conveyor 202 for conveying straw feedstock into the cutting apparatus; a first belt conveyor 206 for conveying the straw material into the drying apparatus via the feeding device.
The system in this embodiment further includes: the intermediate bin 204 is used for storing the cut straw; a grass grabbing machine or a pusher 205 for conveying the straw material in the intermediate bin to a first belt conveyor 206.
The system in this embodiment further includes: the crushing equipment is used for crushing the dried straw material; a second belt conveyor 210 for conveying the dried straw material to a crushing apparatus; and the storage bin 212 is used for storing the crushed straw materials.
The system in this embodiment further includes: and the screening equipment is used for screening the straw material in the storage bin.
The system in this embodiment further includes: the airflow separation equipment is used for separating the screened straw materials; a second scraper conveyor 214 for conveying the screened straw material to the air flow separation equipment; and a dry storage bin 216 for storing the sorted straw material.
Optionally, the bale breaking device may be a bale breaking machine 201; the crushing apparatus may be a crusher 211; the screening device may be a shaker 213; the air flow sorting device may be an air flow sorter 215. For example, the shredder 211 may be a dual spindle 132kw shredder.
In other preferred embodiments, the belt conveyor and the scraper conveyor can be replaced by a closed buried scraper conveyor, so that the closure of the straw preparation system is further improved, and the influence on the environment is reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (18)
1. A straw preparation method comprises the following steps:
a first conveying step: conveying the straw raw material to cutting equipment;
a cutting step: cutting the straw raw material by using the cutting equipment to prepare a straw material;
a second conveying step: conveying the straw material into a drying device through a feeding device;
and (3) drying: drying the straw material by using the drying equipment; and
a discharging step: discharging the dried straw material from the drying apparatus via a discharge device,
wherein the feeding device and/or the discharging device comprises a double-rotor discharge valve;
the double-rotor discharge valve comprises a cylindrical shell, an inner flow channel and a pair of impellers are arranged in the shell, the pair of impellers are a left impeller and a right impeller respectively, the left impeller and the right impeller are arranged left and right and can rotate, and the rotating area of the left impeller is partially overlapped with the rotating area of the right impeller;
and sealing strips are arranged at the edges of the blades of the left impeller and the right impeller.
2. The method of claim 1, wherein the dual rotor discharge valve further comprises a synchronous drive mechanism located outside the housing, the synchronous drive mechanism capable of counter-rotating the left and right impellers.
3. The method of claim 1, further comprising, prior to the first conveying step, a bale breaking step comprising manually and/or mechanically breaking apart bales of straw feedstock.
4. The method of claim 1, in the first conveying step, conveying the straw feedstock into a chopping apparatus by a first scraper conveyor; and/or, in the second conveying step, conveying the straw material into the drying equipment through a feeding device by a first belt conveyor.
5. The method of claim 4, further comprising, after the severing step and before the second conveying step, the steps of:
discharging the straw material to an intermediate bin; and
and conveying the straw material in the intermediate bin to the first belt conveyor by using a straw grabbing machine or a material pushing device.
6. The method of claim 1, further comprising, after the discharging step:
conveying the dried straw material to a crushing device through a second belt conveyor; and
and crushing the straw material by using crushing equipment, and discharging the crushed straw material to a storage bin.
7. The method of claim 6, further comprising the steps of: conveying the straw material in the bin to a screening device; and screening the crushed straw material by using the screening equipment.
8. The method of claim 7, further comprising the steps of: conveying the screened straw material to airflow separation equipment through a second scraper conveyor; sorting the straw material using the air flow sorting device; and conveying the sorted straw materials to a dry material storage for storage.
9. The method according to claim 1, wherein the cutting device is a chaffcutter designed to produce a capacity of 20 to 24 tons/hour.
10. A straw stock preparation system, comprising:
the cutting equipment is used for cutting the straw raw material to prepare the straw material;
a drying device for drying the straw material;
a feeding device through which the straw material enters the drying apparatus; and
a discharging device, through which the dried straw material is discharged from the drying equipment,
wherein the feeding device and/or the discharging device comprises a double-rotor discharge valve;
the double-rotor discharge valve comprises a cylindrical shell, an inner flow channel and a pair of impellers are arranged in the shell, the pair of impellers are a left impeller and a right impeller respectively, the left impeller and the right impeller are arranged left and right and can rotate, and the rotating area of the left impeller is partially overlapped with the rotating area of the right impeller;
and sealing strips are arranged at the edges of the blades of the left impeller and the right impeller.
11. The system of claim 10, wherein the dual rotor discharge valve further comprises a synchronous drive mechanism located outside the housing, the synchronous drive mechanism capable of counter-rotating the left and right impellers.
12. The system of claim 10, further comprising:
and the bale breaking equipment is used for breaking up the straw raw material bales.
13. The system of claim 10, further comprising:
the first scraper conveyor is used for conveying the straw raw materials to the cutting equipment; and
the first belt conveyor is used for conveying the straw material into the drying equipment through the feeding device.
14. The system of claim 13, further comprising:
the intermediate bin is used for storing the straw material; and
and the grass grabbing machine or the material pushing machine is used for conveying the straw materials in the middle bin to the first belt conveyor.
15. The system of claim 10, further comprising:
the crushing equipment is used for crushing the dried straw material;
the second belt conveyor is used for conveying the dried straw material to the crushing equipment; and
and the storage bin is used for storing the crushed straw materials.
16. The system of claim 15, further comprising:
and the screening equipment is used for screening the straw material in the storage bin.
17. The system of claim 16, further comprising:
the airflow separation equipment is used for separating the screened straw materials;
the second scraper conveyer is used for conveying the screened straw material to the airflow separation equipment; and
and the dry storage bin is used for storing the sorted straw materials.
18. The system of claim 10, wherein the cutting apparatus is a chaffcutter designed to produce 20-24 tons/hour.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810276158.XA CN110315620B (en) | 2018-03-29 | 2018-03-29 | Straw preparation method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810276158.XA CN110315620B (en) | 2018-03-29 | 2018-03-29 | Straw preparation method and system |
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| CN110315620A CN110315620A (en) | 2019-10-11 |
| CN110315620B true CN110315620B (en) | 2021-09-24 |
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| CN201810276158.XA Active CN110315620B (en) | 2018-03-29 | 2018-03-29 | Straw preparation method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202022573U (en) * | 2011-02-15 | 2011-11-02 | 陈丹燕 | Conveying structure of material feeding port of slice storage tank |
| CN202799718U (en) * | 2012-01-07 | 2013-03-20 | 阿不都克友木·哈地尔 | Threshing separator |
| CN202499541U (en) * | 2012-01-12 | 2012-10-24 | 四川方大新型建材科技开发有限责任公司 | Moisture-containing raw material air lock feeder |
| CN203876090U (en) * | 2014-02-24 | 2014-10-15 | 江苏锦禾高新科技股份有限公司 | Variable-flow feeding device for straw plastics |
| CN105710953B (en) * | 2014-12-23 | 2018-10-09 | 万华禾香板业有限责任公司 | Agricultural crop straw process for preparing raw material |
| CN106430182A (en) * | 2016-09-27 | 2017-02-22 | 上海然归节能环保技术服务有限公司 | Preparation method and preparation system for biochar |
| CN106625924B (en) * | 2017-01-13 | 2018-02-27 | 中科双泰（北京）环保科技有限公司 | A kind of straw skin marrow separation method |
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