CN117567190B - Straw manure mixing, collecting and fermenting device - Google Patents

Straw manure mixing, collecting and fermenting device Download PDF

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Publication number
CN117567190B
CN117567190B CN202311599409.5A CN202311599409A CN117567190B CN 117567190 B CN117567190 B CN 117567190B CN 202311599409 A CN202311599409 A CN 202311599409A CN 117567190 B CN117567190 B CN 117567190B
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China
Prior art keywords
straw
collecting
roller
shovel
leaking
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CN202311599409.5A
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Chinese (zh)
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CN117567190A (en
Inventor
王涵玉
邱冰
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Nanjing Forestry University
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Nanjing Forestry University
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • C05F17/914Portable or transportable devices, e.g. transport containers or trucks
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00Cutting apparatus specially adapted for cutting hay, straw or the like
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00Cutting apparatus specially adapted for cutting hay, straw or the like
    • A01F29/09Details
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • C05F17/921Devices in which the material is conveyed essentially horizontally between inlet and discharge means
    • C05F17/929Cylinders or drums
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • C05F17/964Constructional parts, e.g. floors, covers or doors
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90Apparatus therefor
    • C05F17/964Constructional parts, e.g. floors, covers or doors
    • C05F17/971Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00Fertilisers from human or animal excrements, e.g. manure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/40Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses a straw manure mixing, collecting and fermenting device which comprises a rice collecting shovel, a straw vibrating box, a connecting leaking barrel, a manure collecting shovel, a cam, a round wheel, a telescopic rod, a connecting leaking drum leaking groove, a roller and roller leaking holes, wherein one side of the straw vibrating box, which is close to the ground, is provided with a plurality of soil screening holes, and the diameter of any roller leaking hole is smaller than the groove distance of any connecting leaking drum leaking groove. The invention has the beneficial effects that: the straw and stalk manure utilization rate is high, straw and stalk are cut up automatically, labour saving and time saving, efficient, degree of automation is high, can handle the straw that piles up to the animal and make the nest, also can handle and pile up straw and multiple animal manure in the field, and small-size canning fermentation, different manure batch fermentation is convenient for control fermentation time, improves fertilizer fertility, and is with low costs, is applicable to small-size farm.

Description

Straw manure mixing, collecting and fermenting device
Technical Field
The invention relates to the technical field of environmental protection, in particular to a straw and excrement mixing, collecting and fermenting device.
Background
In animal husbandry cultivation, the ground of a farm is mostly made of cement, some animal manure can be stuck on the cement ground and is difficult to clean, if the animal manure is not treated for a long time, the environment in the cultivation is poor, the cultivated livestock is easy to be ill, manual cleaning is usually required, time and labor are wasted, the animal manure is also an inadequately available fertilizer in agricultural planting, and the manure can be collected in the cleaning of the farm.
When raising pigs, dry straws and the like are paved on a cement ground for heat preservation, and hoof diseases which are easy to occur when the pig trotters are stepped on a hard ground can be prevented, but the problem of excrement generated by the pigs after forage is paved is more difficult to solve, in most cases, the pig is required to be shoveled manually, then new hay is paved after the pig is washed and dried, the pigs are required to be driven out of circles firstly and then are required to be dried for a period of time, the time and the labor cost are increased, the straw excrement is taken out and is usually used as waste or is thrown into a methane tank for secondary use, but the straw is generally complete when being paved, but is thrown into the methane tank, the straw excrement and the like are required to be chopped, the step of chopping is also required to be completed manually, and the smell of the matters such as the excrement is relatively intense, and the discomfort of operators easily occurs; the present invention improves upon the above-mentioned shortcomings in that it is time consuming, laborious, inefficient and difficult to automate, and allows for the handling of straw and various animal manure products deposited in the field.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the utilization rate of the straw and stalk feces is low, the cutting of the straw and stalk is complicated, the smell of the straw and stalk feces and other substances is relatively rich, and the discomfort of operators is easy to occur; time and labor are wasted, efficiency is low, and automation is difficult to achieve.
In order to solve the technical problems, the invention provides the following technical scheme: a mixed collecting and fermenting device for straw feces comprises
A rice harvesting straw shovel, a straw vibrating box, a connecting leaking barrel, a manure harvesting shovel, a cam, a round wheel, a telescopic rod, a connecting leaking drum leaking groove, a roller and a roller leak hole
The rice harvesting shovel is connected with the rice straw vibrating box,
The straw vibration box is connected with the connecting leakage barrel,
The connecting leaking barrel is detachably connected with the excrement collecting shovel,
The cam is hinged with the straw vibrating box,
The connecting leakage barrel is connected with the telescopic rod,
The telescopic rod is hinged with the round wheel,
The connecting drain drum leaking groove is arranged at one side of the connecting drain barrel,
The drum leak hole is arranged at one side of the drum,
The roller is hinged with the connecting leakage barrel,
A plurality of soil screening holes are arranged on one side of the straw vibrating box close to the ground,
The diameter of each roller leak hole is smaller than the slot distance of each connecting leak drum leaking.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the straw collecting shovel is also provided with a plurality of crushing teeth which are uniformly distributed on one side of the roller close to the straw collecting shovel.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the straw collecting machine is also provided with a shredding rod, the shredding rod is arranged on one side of the roller, which is close to the straw collecting shovel, and the sharp end of the shredding rod faces towards the direction consistent with the rotation direction of the roller.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: and a stirring rod is also arranged on the inner side of the roller.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: a roller cover is also provided.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the outer contour of the straw vibrating box is cuboid.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the rice harvesting shovel is straight shovel.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the excrement collecting shovel is straight shovel on one side far away from the connecting leakage barrel, and the excrement collecting shovel is a radian shovel sunken towards the ground on one side close to the connecting leakage barrel.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the side of the stirring rod far away from the roller is a spike.
As a preferable scheme of the straw manure mixing, collecting and fermenting device, the invention comprises the following steps: the roller is made of corrosion-resistant plastic.
The invention has the beneficial effects that: the straw and stalk manure utilization rate is high, straw and stalk are cut up automatically, labour saving and time saving, efficient, degree of automation is high, can handle the straw that piles up to the animal and make the nest, also can handle and pile up straw and multiple animal manure in the field, and small-size canning fermentation, different manure batch fermentation is convenient for control fermentation time, improves fertilizer fertility, and is with low costs, is applicable to small-size farm.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
Fig. 2 is a schematic partial structure diagram of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
Fig. 3 is a schematic partial structure diagram of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
Fig. 4 is a schematic partial structure diagram of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
Fig. 5 is a schematic partial structure diagram of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
Fig. 6 is a schematic diagram of a partial structure of a straw manure mixing, collecting and fermenting device according to an embodiment of the invention.
In the figure: a harvesting grass shovel 101; a straw vibrating box 102; the connection leakage barrel 103; a fecal collection shovel 104; a cam 105; a round wheel 106; a telescopic rod 107; a connection drain drum leaking slot 108; a drum 201; a drum leak 202; soil screening holes 102a; crushing teeth 203; a chopper lever 204; a stirring rod 205; a drum cover 206.
Detailed Description
Referring to fig. 1-6, the embodiment provides a straw manure mixing, collecting and fermenting device, which comprises a straw collecting shovel 101, a straw vibrating box 102, a connecting leakage barrel 103, a manure collecting shovel 104, a cam 105, a round wheel 106, a telescopic rod 107, a connecting leakage drum leaking groove 108, a roller 201 and a roller leakage hole 202, wherein
The rice harvesting shovel 101 is connected with a rice straw vibrating box 102,
The straw shaking box 102 is connected with a connecting leakage bucket 103,
The connecting leakage bucket 103 is detachably connected with the excrement collecting shovel 104,
The cam 105 is hinged with the straw vibrating bin 102,
The connecting leakage bucket 103 is connected with a telescopic rod 107,
The telescopic rod 107 is hinged with the round wheel 106,
The connection leakage drum leaking groove 108 is provided at one side of the connection leakage bucket 103,
The drum leakage hole 202 is provided at one side of the drum 201,
The drum 201 is hinged with the connection tub 103,
The straw shaking box 102 is provided with a plurality of soil screening holes 102a at one side close to the ground,
The diameter of any roller leak 202 is smaller than the slot distance of any connecting leak drum leaking slot 108.
A plurality of crushing teeth 203 are also arranged, and the crushing teeth 203 are uniformly distributed on one side of the roller 201 close to the rice harvesting shovel 101.
A chopper bar 204 is also provided, the chopper bar 204 is arranged in the drum 201 at one side close to the rice harvesting shovel 101, and the sharp end of the chopper bar 204 faces in the same direction as the rotation direction of the drum 201.
A stirring rod 205 is also provided, the stirring rod 205 being disposed inside the drum 201.
A roller cover 206 is also provided.
For adequate retting fermentation, dry straw is often mixed with manure for retting fermentation, thereby enhancing fertility.
In the first step, the manure collecting shovel 104 is disassembled, a roller cover 206 is arranged at the disassembled end of the manure collecting shovel 104, the telescopic rod 107 is lowered, the device is adjusted to be shaped as shown in fig. 2, and the side of the roller 201 close to the straw vibrating box 102 is higher than the side of the roller 201 far away from the straw vibrating box 102.
The round wheel 106 is connected with a motor, the motor is started, the round wheel 106 rolls along with the rotation of the pushing device, the pushing device moves forward, the cam 105 is hinged with the straw vibration box 102, one side of the straw vibration box 102 close to the ground is provided with a plurality of soil screening holes 102a, in the process of moving forward, the straw and the straw are shoveled into the straw vibration box 102 by the straw vibration box 101, the cam 105 is not round, the straw vibration box 102 also vibrates along with the rotation of the cam 105, the crushed soil and the cobs in the straw vibration box 102 are continuously screened out from the soil screening holes 102a, the straw and the straw continuously fall into the roller 201 along with the increasing of the straw and the straw in the straw vibration box 102, the roller 201 is hinged with the connecting leakage barrel 103, the roller 201 is driven by the motor to continuously rotate, the crushing teeth 203 continuously rotate along with the continuous rotation of the roller 201, the crushing teeth 203 can cut the straw and the straw, the too long straw is difficult to be crushed and cut by the crushing teeth 203, the straw which is excessively thick straw can be cut by the crushing teeth 204, and the straw 205 is uniformly mixed with the stirring straw which is fully. The diameter of any roller leak 202 is smaller than the slot distance of any connecting leak drum leaking slot 108. Stones and crushed soil also fall from the drum leakage holes 202 and the connecting leakage drum leaking groove 108 during the continuous rotation of the drum 201 driven by the motor.
And secondly, filling the excrement, fully mixing the dry straw with the excrement, firstly, filling the excrement collecting shovel 104 back, and mounting a roller cover 206 at one end of the roller 201 close to the straw vibrating box 102, and raising the telescopic rod 107, wherein the device is adjusted to be in a shape shown in fig. 1, one side of the roller 201 close to the straw vibrating box 102 is lower than one side of the roller 201 far away from the straw vibrating box 102, the roller 201 and the connecting drain barrel 103 are also adjusted to be in a shape shown in fig. 1, and the roller drain hole 202 is not directly communicated with the connecting drain drum leaking groove 108, so that materials in the roller 201 cannot flow out from the positions of the roller drain hole 202 and the connecting drain drum leaking groove 108.
The device is placed in a livestock drain canal of a farm, the round wheel 106 is connected with a motor, the motor is started, the round wheel 106 rolls along with the motor, the pushing device moves forward, the excrement is shoveled into the roller 201 by the excrement collecting shovel 104, the cam 105 is not round, so that dry straw and excrement in the roller 201 vibrate along with the rotation of the cam 105, and the dry straw and excrement are mixed.
After the device leaves the livestock drain canal of the farm, the device is stopped at a place which is convenient for cleaning the sanitation, the roller 201 is controlled to rotate reciprocally for a plurality of times through a motor, the rotation angle of each time is controlled within three hundred sixty degrees, the rotation direction of the roller leak 202 is not caused to face downwards to the connecting drain drum leaking groove 108, so that dry straw and manure in the roller 201 are fully mixed with the help of the stirring rod 205, and redundant water also flows out from a gap along the hinging position of the roller 201 and the connecting drain barrel 103, and flows out from the roller leak 202 and the connecting drain drum leaking groove 108. The effluent liquid can also be collected for other use.
The drum 201 can be directly taken down, the empty drum 201 is hinged with the connecting leaking barrel 103 again, and after the drum 201 filled with the dry straw and the excrement is wrapped with a plastic film, the drum is horizontally placed, so that the drum leak holes 202 are opposite to each other, and the fermentation of the dry straw and the excrement in the drum 201 is facilitated.
The outer contour of the straw vibrating box 102 is cuboid.
The rice straw shaking box 102 is convenient for holding rice straw and stalk, and the bottom surface of the rice straw shaking box 102 is a plane for preventing the rice straw and stalk from accumulating unevenly.
The harvesting shovel 101 is straight shovel.
The amount of the straws and the stalks is far greater than that of the excrement, straight shovel are used for shoveling the dried straws and the stalks on the ground surface, so that the straws and the stalks on the lower layer are exposed, and the dried straws and the stalks are convenient to shovel next time.
The side of the excrement collecting shovel 104 far away from the connecting leakage barrel 103 is straight shovel, and the side of the excrement collecting shovel 104 near the connecting leakage barrel 103 is a radian shovel which is sunken towards the ground.
Some animal feces are round, such as sheep and rabbit feces, and the arc shovel prevents the feces from rolling off, so that the white separating table is conveniently arranged in the roller 201.
The stirring rod 205 has a spike on the side away from the drum 201.
The stirring effect is enhanced.
The roller 201 is made of corrosion-resistant plastic.
The replacement is convenient, and the corrosion-resistant plastic material prevents corrosion in the composting process.

Claims (9)

1. A straw excrement mixing, collecting and fermenting device is characterized in that: comprises a rice harvesting straw shovel (101), a rice straw vibrating box (102), a connecting leaking barrel (103), a excrement harvesting shovel (104), a cam (105), a round wheel (106), a telescopic rod (107), a connecting leaking drum leaking groove (108), a roller (201) and a roller leaking hole (202), wherein
The rice harvesting shovel (101) is connected with the rice straw vibrating box (102),
The straw vibrating box (102) is connected with the connecting leakage barrel (103),
The connecting leakage barrel (103) is detachably connected with the excrement collecting shovel (104),
The cam (105) is hinged with the straw vibrating box (102),
The connecting leakage barrel (103) is connected with the telescopic rod (107),
The telescopic rod (107) is hinged with the round wheel (106),
The connecting drain drum leaking groove (108) is arranged at the lower side of the connecting drain barrel (103),
The drum leak hole (202) is arranged at one side of the drum (201),
The roller (201) is rotatably connected with the inner side of the leakage barrel (103),
A roller cover (206) is detachably arranged at one end of the roller (201) close to the excrement collecting shovel (104),
A plurality of soil screening holes (102 a) are arranged on one side of the straw vibrating box (102) close to the ground,
The diameter of any roller leak hole (202) is smaller than the slot distance of any connecting leak drum leaking slot (108).
2. The straw manure mixing, collecting and fermenting device according to claim 1, wherein: the rice straw harvester is also provided with a plurality of crushing teeth (203), and the crushing teeth (203) are uniformly distributed on one side of the roller (201) close to the rice straw collecting shovel (101).
3. The straw manure mixing, collecting and fermenting device according to claim 2, wherein: the rice straw harvester is characterized by further comprising a shredding rod (204), wherein the shredding rod (204) is arranged on one side, close to the rice straw collecting shovel (101), of the roller (201), and the sharp end of the shredding rod (204) faces to the direction consistent with the rotation direction of the roller (201).
4. A straw manure mixing, collecting and fermenting device according to claim 3, wherein: a stirring rod (205) is also arranged, and the stirring rod (205) is arranged on the inner side of the roller (201).
5. The straw manure mixing, collecting and fermenting device according to claim 4, wherein: the outline of the straw vibrating box (102) is cuboid.
6. The straw manure mixing, collecting and fermenting device according to any one of claims 4-5, which is characterized in that: the rice harvesting shovel (101) is straight shovel.
7. The straw manure mixing, collecting and fermenting device according to claim 6, wherein: one side of the excrement collecting shovel (104) far away from the connecting leakage barrel (103) is straight shovel, and one side of the excrement collecting shovel (104) close to the connecting leakage barrel (103) is a radian shovel which is sunken towards the ground.
8. The straw manure mixing, collecting and fermenting device according to claim 7, wherein: the side of the stirring rod (205) far away from the roller (201) is a spike.
9. The straw manure mixing, collecting and fermenting device according to claim 7 or 8, wherein: the roller (201) is made of corrosion-resistant plastic.
CN202311599409.5A 2023-11-28 2023-11-28 Straw manure mixing, collecting and fermenting device Active CN117567190B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN117567190B true CN117567190B (en) 2024-05-14

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017001942A (en) * 2015-06-04 2017-01-05 株式会社リオン Natural amino acid fertilizer and method for producing the same
CN108260478A (en) * 2018-01-17 2018-07-10 重庆汇盛园林景观设计工程有限公司 A kind of grassland excrement clears up vehicle
CN109534866A (en) * 2019-01-09 2019-03-29 邓和钟 A kind of heating of farmyard manure high-efficiency stirring and internal cleaning all-in-one machine
CN209732239U (en) * 2019-03-27 2019-12-06 青海省畜牧兽医科学院 Cattle and sheep are bred and use excrement and urine cleaning device
CN111699980A (en) * 2020-06-30 2020-09-25 张继忠 Pasture is collected reprocessing device with cow dung
CN111869647A (en) * 2020-08-20 2020-11-03 陕西工业职业技术学院 Device and method for shoveling turf
CN114478096A (en) * 2022-03-02 2022-05-13 安徽省科润有机肥业有限责任公司 Special organic fertilizer production line for rice and process for producing organic fertilizer
CN217336873U (en) * 2022-06-01 2022-09-02 郭蕾 Livestock-raising excrement and urine cleaning device
CN115304411A (en) * 2022-08-10 2022-11-08 北京贵清科技有限公司 Preparation method and device of quick-acting organic fertilizer with heavy metal pollution remediation function

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017001942A (en) * 2015-06-04 2017-01-05 株式会社リオン Natural amino acid fertilizer and method for producing the same
CN108260478A (en) * 2018-01-17 2018-07-10 重庆汇盛园林景观设计工程有限公司 A kind of grassland excrement clears up vehicle
CN109534866A (en) * 2019-01-09 2019-03-29 邓和钟 A kind of heating of farmyard manure high-efficiency stirring and internal cleaning all-in-one machine
CN209732239U (en) * 2019-03-27 2019-12-06 青海省畜牧兽医科学院 Cattle and sheep are bred and use excrement and urine cleaning device
CN111699980A (en) * 2020-06-30 2020-09-25 张继忠 Pasture is collected reprocessing device with cow dung
CN111869647A (en) * 2020-08-20 2020-11-03 陕西工业职业技术学院 Device and method for shoveling turf
CN114478096A (en) * 2022-03-02 2022-05-13 安徽省科润有机肥业有限责任公司 Special organic fertilizer production line for rice and process for producing organic fertilizer
CN217336873U (en) * 2022-06-01 2022-09-02 郭蕾 Livestock-raising excrement and urine cleaning device
CN115304411A (en) * 2022-08-10 2022-11-08 北京贵清科技有限公司 Preparation method and device of quick-acting organic fertilizer with heavy metal pollution remediation function

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