CN104193440A - Fertilizer fermentation equipment - Google Patents

Fertilizer fermentation equipment Download PDF

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Publication number
CN104193440A
CN104193440A CN201410498898.XA CN201410498898A CN104193440A CN 104193440 A CN104193440 A CN 104193440A CN 201410498898 A CN201410498898 A CN 201410498898A CN 104193440 A CN104193440 A CN 104193440A
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CN
China
Prior art keywords
fermentation vat
fertilizer
cantilever
supporting roll
rotary conveyor
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Granted
Application number
CN201410498898.XA
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Chinese (zh)
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CN104193440B (en
Inventor
迟英娟
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Zhengzhou University
Henan Agricultural University
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Individual
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Priority to CN201410498898.XA priority Critical patent/CN104193440B/en
Publication of CN104193440A publication Critical patent/CN104193440A/en
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Publication of CN104193440B publication Critical patent/CN104193440B/en
Expired - Fee Related legal-status Critical Current
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    • 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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  • Fertilizers (AREA)

Abstract

A piece of fertilizer fermentation equipment comprises a fermentation tank, wherein a discharge port is arranged at one end of the fermentation tank, tracks are arranged at the top parts on the two sides of the fermentation tank, a horizontal moving platform is mounted on the tracks, travelling wheels are mounted on the horizontal moving platform, the travelling wheels are connected with a travelling drive motor, the travelling wheels are matched with the tracks, a cantilever is mounted below the horizontal moving platform, one end of the cantilever is hinged with the horizontal moving platform, a first hydraulic cylinder is mounted between the cantilever and the horizontal moving platform, a material throwing roller is mounted at the other end of the cantilever and is connected with a material turning drive motor, a plurality of stirring rods are arranged on the peripheral wall of the material throwing roller, a material throwing plate is mounted at the end part of each stirring rod, a cross beam is arranged at the top part of a discharge port at one end of the fermentation tank, a material stopping door is mounted below the cross beam, and the material stopping door is hinged with the cross beam. A fertilizer pile is automatically piled in a turned and layered manner, so that the fertilizer is guaranteed to be in full contact with the air, the temperature of the fertilizer pile is prevented from being too high, an operation staff operates remotely, the operations are not carried out in close range, the fertilizer treatment efficiency is high, continuous production is implemented, and the like.

Description

A kind of fertilizer fermentation equipment
Technical field
The present invention relates to a kind of fertilizer production system, specifically a kind of fertilizer fermentation equipment.
Background technology
The organic fertilizer that contains aerobic bacteria needs constantly to absorb oxygen during the fermentation, the temperature of fertilizer can constantly rise simultaneously, this just requires to need frequently fertilizer to be carried out to turning in fertilizer fermenting process, make the abundant ingress of air of aerobic bacteria, fertilizer is lowered the temperature simultaneously, prevent that excess Temperature from causing bacterium death.Because requiring fertilizer temperature, zymotechnique remains on 40 DEG C-50 DEG C, artificial stirring is difficult to realize, current existing method is to adopt the engineering machinery such as shovel loader to carry out turning operation to fertilizer heap, or uses drum-type stirring equipment during the fermentation fertilizer to be stirred.While using engineering machinery to carry out turning operation, be difficult to ensure that stirring is even, fertilizer is piled often abundant ingress of air of inner fertilizer, fertilizer is piled inner heat and is also difficult to effective diffusion, therefore the fermentation efficiency of fertilizer is very limited, when engineering machinery long working, the temperature of fertilizer heap can be conducted in wheel house from metal parts to engineering machinery and power section along, cause work machine operation envrionment temperature higher, operator need work in hot environment, after power section temperature rise, also can impact the heat radiation of engineering machinery engine, when serious, can cause engineering machinery to damage.Drum-type stirring equipment is limit because of its structure, and volume is all relatively little, and fertilizer processing efficiency is limited, and cannot realize continuous production.
Summary of the invention
The object of this invention is to provide a kind of fertilizer fermentation equipment, it can solve the deficiency that prior art exists.
The present invention for achieving the above object, be achieved through the following technical solutions: comprise fermentation vat, fermentation vat one end arranges discharge port, fermentation vat two side roof parts arrange track, traversing platform is installed on track, on traversing platform, road wheel is installed, road wheel is connected with travel driving motor, road wheel coordinates with track, cantilever is installed in traversing platform below, cantilever one end and traversing platform are hinged, between cantilever and traversing platform, the first hydro-cylinder is installed, the cantilever the other end is installed material casting roller, material casting roller is connected with stirring drive-motor, material casting roller periphery wall arranges multiple agitator arms, material casting plate is installed in agitator arm end, the discharge port top of fermentation vat one end arranges crossbeam, crossbeam below mounting block bin gate, stock stopping door and crossbeam are hinged, the second hydro-cylinder is installed between crossbeam and stock stopping door, the second hydro-cylinder can drive stock stopping door around crossbeam-rotating, the first groove is offered in the fermentation vat bottom surface of discharge port bottom, the first rotary conveyor is installed in the first groove, first rotary conveyor one end is positioned at fermentation vat, the first rotary conveyor the other end is positioned at the hopper top of wrapping machine, the second groove is offered in the other end bottom surface that fermentation vat is relative with discharge port, the second rotary conveyor is installed in the second groove, the width of the first rotary conveyor and the second rotary conveyor is all identical with fermentation vat bottom width, the first rotary conveyor is positioned at the part end face of fermentation vat inside and the end face of the second rotary conveyor all flushes with fermentation vat bottom surface, rotating shaft and motor are installed in traversing platform bottom, passive gear is installed in rotating shaft, on the output shaft of motor, driving toothed gear is installed, passive gear is meshed with driving toothed gear, in rotating shaft, fixedly mount one end of union lever, the other end of union lever connects shower, shower is connected with water storage box by flexible pipe.Stock stopping door comprises the first sway brace and the second sway brace, the upper end of the first sway brace and the second sway brace is hinged with crossbeam respectively, the first sway brace is connected by supporting beam with the second sway brace top, the second hydro-cylinder is installed between supporting beam and crossbeam, between the first sway brace and the second sway brace top, the first supporting roll is installed, between the first sway brace and the second sway brace lower end, the second supporting roll is installed, the first supporting roll and the second supporting roll all can be around central shaft rotations separately, the first supporting roll is connected by the first cycloconveyor belt with the second supporting roll, the other end side wall upper part that fermentation vat is relative with discharge port is installed the 3rd supporting roll, the 4th supporting roll is installed near the position of the second rotary conveyor in the 3rd supporting roll below, the 3rd supporting roll and the 4th supporting roll all can be around central shaft rotations separately, the 3rd supporting roll is connected by the second cycloconveyor belt with the 4th supporting roll.Between both sides, fermentation vat bottom surface and the sidewall of fermentation vat, tilting plane is all set, the angle between tilting plane and fermentation vat bottom surface is 45 °-60 °.Cantilever comprises the arm that many one end and traversing platform are hinged, material casting roller is all installed between adjacent arm, arm lower end installation shaft bearing sleeve, rotating shaft is installed in bearing housing, rotating shaft one end is connected with the material casting roller of arm one side, the rotating shaft the other end arranges spline, on the material casting roller of arm opposite side, offers spline, and spline matches with spline.The 3rd hydro-cylinder is installed on cantilever, and the piston rod of the 3rd hydro-cylinder is positioned at cantilever lower end, and temperature, humidity detection probe are installed in the piston rod end of the 3rd hydro-cylinder.
The invention has the advantages that: can realize the AUTOMATIC ZONING turning to fertilizer heap, guarantee the abundant ingress of air of fertilizer, prevent that fertilizer stack temperature is too high, operator are remote controlled, do not need closely to operate, and fertilizer processing efficiency is high, can realize continuous production etc.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 analyses and observe structure for amplifying schematic diagram;
Fig. 3 is that the B of Fig. 1 is to structure for amplifying schematic diagram;
Fig. 4 is I portion structure for amplifying schematic diagram in Fig. 1;
Fig. 5 is II portion structure for amplifying schematic diagram in Fig. 2.
Embodiment
A kind of fertilizer fermentation equipment of the present invention comprises fermentation vat 1, it is characterized in that: fermentation vat 1 one end arranges discharge port 9, fermentation vat two side roof parts arrange track 2, traversing platform 3 is installed on track 2, on traversing platform 3, road wheel 4 is installed, road wheel 4 is connected with travel driving motor 19, road wheel 4 coordinates with track 2, cantilever is installed in traversing platform 3 belows, cantilever one end and traversing platform 3 are hinged, the first hydro-cylinder 18 is installed between cantilever and traversing platform 3, the cantilever the other end is installed material casting roller 6, material casting roller 6 is connected with stirring drive-motor 20, material casting roller 6 periphery walls arrange multiple agitator arms 7, material casting plate 8 is installed in agitator arm 7 ends, the discharge port top of fermentation vat 1 one end arranges crossbeam 10, crossbeam 10 below mounting block bin gates 11, stock stopping door 11 is hinged with crossbeam 10, the second hydro-cylinder 12 is installed between crossbeam 10 and stock stopping door 11, the second hydro-cylinder 12 can drive stock stopping door 11 to rotate around crossbeam 10, the first groove 13 is offered in fermentation vat 1 bottom surface of discharge port 9 bottoms, interior installation the first rotary conveyor 14 of the first groove 13, first rotary conveyor 14 one end are positioned at fermentation vat 1, first rotary conveyor 14 the other ends are positioned at the hopper top of wrapping machine 15, the second groove 16 is offered in the other end bottom surface that fermentation vat 1 is relative with discharge port 9, interior installation the second rotary conveyor 17 of the second groove 16, the width of the first rotary conveyor 14 and the second rotary conveyor 17 is all identical with fermentation vat 1 bottom width, the first rotary conveyor 14 is positioned at the part end face of fermentation vat 1 inside and the end face of the second rotary conveyor 17 all flushes with fermentation vat 1 bottom surface, rotating shaft 43 and motor 40 are installed in traversing platform 3 bottoms, passive gear 42 is installed in rotating shaft 43, driving toothed gear 41 is installed on the output shaft of motor 40, passive gear 42 is meshed with driving toothed gear 41, in rotating shaft 43, fixedly mount one end of union lever 44, the other end of union lever 44 connects shower 21, shower 21 is connected with water storage box 23 by flexible pipe 22.This structure can drive rotating shaft 43 to rotate by motor 40, thereby drives shower 21 to swing, and reaches shower 21 and changes the object that sprays direction with cantilevered swing.When use, fertilizer is poured in fermentation vat 1 away from one end of discharge port 9 from fermentation vat 1, formation fertilizer heap, stock stopping door 11 is closed, the first rotary conveyor 14 and the second rotary conveyor 17 start, now the throughput direction of the first rotary conveyor 14 and the second rotary conveyor 17 is all towards fermentation vat 1 middle part, the second rotary conveyor 17 pushes away fertilizer heap the pool wall of fermentation vat 1, cantilever rises under the driving of the first hydro-cylinder 18, drive material casting roller 6 to lift, traversing platform 3 laterally moves to above fertilizer heap under the driving of travel driving motor 19, stirring drive-motor 20 drives material casting roller 6 to rotate, cantilever declines gradually, agitator arm 7 on material casting roller 6 and material casting plate 8 start progressively layering by the fertilizer in fertilizer heap and turn over throwing to the direction of fermentation vat 1 the other end from top, in the time that material casting roller 6 is down to fermentation vat 1 bottom, this fertilizer heap has all been turned over to be thrown to next station, turning over fertilizer layering in throwing process contacts with air, distribute heat simultaneously, be conducive to the abundant ingress of air of fertilizer, prevent that fertilizer stack temperature is too high, along with fertilizer heap constantly turned over to throwing, in the time that fertilizer is piled the discharge port 9 of close fermentation vat 1, the fertilizer of throwing is stopped by stock stopping door 11, drop down onto on the first rotary conveyor 14, fertilizer heap is pushed away stock stopping door 11 by the first rotary conveyor 14, now stirring drive-motor 20 reverses, material casting roller 6 changes material casting direction, fertilizer heap is turned over to throwing to fermentation vat 1 the other end.When the present invention works, fertilizer heap is kept at a distance with two end walls of fermentation vat 1 all the time, can effectively prevent that material casting roller 6 and pool wall from bumping, cause material casting roller 6 to damage, dead angle simultaneously that can also eliminate stirring, make fertilizer can not accumulate in fermentation vat 1 angle, two ends, guarantee that whole fertilizer all can effectively ferment.After the fermentation of fertilizer heap, stock stopping door 11 is opened, and the first rotary conveyor 14 reverses, and material casting roller 6 turns over throwing by fertilizer heap on the first rotary conveyor 14, and the first rotary conveyor 14 is delivered to fertilizer in the hopper of wrapping machine 15, carries out subsequent packages operation.In fertilizer fermenting process, can keep the skin wet or liquid bacterial agent to fertilizer heap by shower 21 at any time according to the humidity situation of fertilizer heap.The cantilever that the present invention adopts drives compared with the structure of material casting roller 6 and the structure of the direct driving arrangement lifting of conventional hydraulic cylinder piston rod, save the space of platform top, need above traversing platform 3, not reserve the height of hydro-cylinder, be conducive to reduce workshop building cost, in limited space, normally move with regard to feasible system.
The present invention for prevent because of fertilizer viscosity larger, after causing fertilizer to contact with stock stopping door 11 or fermentation vat 1 end wall, stick to the situation that cannot participate in next step on stock stopping door 11 or fermentation vat 1 and turn over throwing, can adopt following structure: stock stopping door 11 comprises the first sway brace 24 and the second sway brace 25, the upper end of the first sway brace 24 and the second sway brace 25 is hinged with crossbeam 10 respectively, the first sway brace 24 is connected by supporting beam 29 with the second sway brace 25 tops, the second hydro-cylinder 12 is installed between supporting beam 29 and crossbeam 10, between the first sway brace 24 and the second sway brace 25 tops, the first supporting roll 26 is installed, between the first sway brace 24 and the second sway brace 25 lower ends, the second supporting roll 27 is installed, the first supporting roll 26 and the second supporting roll 27 all can be around central shaft rotations separately, the first supporting roll 26 is connected by the first cycloconveyor belt 28 with the second supporting roll 27, the other end side wall upper part that fermentation vat 1 is relative with discharge port 9 is installed the 3rd supporting roll 30, the 4th supporting roll 31 is installed near the position of the second rotary conveyor 17 in the 3rd supporting roll 30 belows, the 3rd supporting roll 30 and the 4th supporting roll 31 all can be around central shaft rotations separately, the 3rd supporting roll 30 is connected by the second cycloconveyor belt 32 with the 4th supporting roll 31.After fertilizer is thrown to the first cycloconveyor belt 28 of stock stopping door 11 or the second cycloconveyor belt 32 of fermentation vat 1 wall, along with a large amount of adhesions of fertilizer, the first cycloconveyor belt 28 or the second cycloconveyor belt 32 there will be the amount of stressing to be greater than the situation of opposite side, now conveying belt meeting automatic moving, the fertilizer adhering to is dropped down onto on the first rotary conveyor 14 or the second rotary conveyor 17, again delivered in fertilizer heap by the first rotary conveyor 14 or the second rotary conveyor 17.
The present invention is the dead angle of eliminating between fermentation vat 1 two sides and bottom surface, can between fermentation vat 1 both sides, bottom surface and the sidewall of fermentation vat 1, tilting plane 33 be all set, and the angle between tilting plane 33 and fermentation vat 1 bottom surface is 45 °-60 °.Fertilizer can slide to fermentation vat 1 bottom surface voluntarily on tilting plane 33, is convenient to material casting roller 6 and turns over throwing.
The present invention is in order to eliminate the long concentricity deviation causing of material casting roller 6, material casting roller 6 can be made to multi-segment structure, and between adjacent material casting roller 6, arm 5 is set, concrete structure is as follows: cantilever comprises the arm 5 that many one end and traversing platform 3 are hinged, between adjacent arm 5, material casting roller 6 is all installed, arm 5 lower end installation shaft bearing sleeves 34, the interior installation rotating shaft 35 of bearing housing 34, rotating shaft 35 one end are connected with the material casting roller 6 of arm 5 one sides, rotating shaft 35 the other ends arrange spline 36, on the material casting roller 6 of arm 5 opposite sides, offer spline 37, spline 36 matches with spline 37.Said structure can prevent that material casting roller 6 is because own wt reason causes distortion, cause concentricity to occur deviation, situation about significantly swinging while causing rotation, between adjacent material casting roller 6, be connected and can eliminate the stress between adjacent material casting roller 6 by spline 36 and spline 37, guarantee the smooth and easy rotation of material casting roller 6.
The present invention is in order can automatically to measure the temperature and humidity of fertilizer heap, and the piston rod that the 3rd hydro-cylinder 38, the three hydro-cylinders 38 can be installed on cantilever is positioned at cantilever lower end, and temperature, humidity detection probe 39 are installed in the piston rod end of the 3rd hydro-cylinder.In fertilizer fermenting process, can by hydro-cylinder, temperature, humidity detection probe 39 be inserted in fertilizer heap at any time, temperature, humidity detection probe 39 real time datas that record are for adjusting stirring speed and rate of water make-up.

Claims (5)

1. a fertilizer fermentation equipment, comprise fermentation vat (1), it is characterized in that: fermentation vat (1) one end arranges discharge port (9), fermentation vat two side roof parts arrange track (2), the upper traversing platform (3) of installing of track (2), the upper road wheel (4) of installing of traversing platform (3), road wheel (4) is connected with travel driving motor (19), road wheel (4) coordinates with track (2), cantilever is installed in traversing platform (3) below, cantilever one end and traversing platform (3) are hinged, between cantilever and traversing platform (3), the first hydro-cylinder (18) is installed, the cantilever the other end is installed material casting roller (6), material casting roller (6) is connected with stirring drive-motor (20), material casting roller (6) periphery wall arranges multiple agitator arms (7), material casting plate (8) is installed in agitator arm (7) end, the discharge port top of fermentation vat (1) one end arranges crossbeam (10), crossbeam (10) below mounting block bin gate (11), stock stopping door (11) is hinged with crossbeam (10), between crossbeam (10) and stock stopping door (11), the second hydro-cylinder (12) is installed, the second hydro-cylinder (12) can drive stock stopping door (11) to rotate around crossbeam (10), the first groove (13) is offered in fermentation vat (1) bottom surface of discharge port (9) bottom, the first rotary conveyor (14) is installed in the first groove (13), the first rotary conveyor (14) one end is positioned at fermentation vat (1), the first rotary conveyor (14) the other end is positioned at the hopper top of wrapping machine (15), the second groove (16) is offered in the other end bottom surface that fermentation vat (1) is relative with discharge port (9), the second rotary conveyor (17) is installed in the second groove (16), the width of the first rotary conveyor (14) and the second rotary conveyor (17) is all identical with fermentation vat (1) bottom width, the first rotary conveyor (14) is positioned at the inner part end face of fermentation vat (1) and the end face of the second rotary conveyor (17) all flushes with fermentation vat (1) bottom surface, rotating shaft (43) and motor (40) are installed in traversing platform (3) bottom, the upper passive gear (42) of installing of rotating shaft (43), driving toothed gear (41) is installed on the output shaft of motor (40), passive gear (42) is meshed with driving toothed gear (41), one end of rotating shaft (43) upper fixed installation union lever (44), the other end of union lever (44) connects shower (21), shower (21) is connected with water storage box (23) by flexible pipe (22).
2. a kind of fertilizer fermentation equipment according to claim 1, it is characterized in that: stock stopping door (11) comprises the first sway brace (24) and the second sway brace (25), the upper end of the first sway brace (24) and the second sway brace (25) is hinged with crossbeam (10) respectively, the first sway brace (24) is connected by supporting beam (29) with the second sway brace (25) top, between supporting beam (29) and crossbeam (10), the second hydro-cylinder (12) is installed, between the first sway brace (24) and the second sway brace (25) top, the first supporting roll (26) is installed, between the first sway brace (24) and the second sway brace (25) lower end, the second supporting roll (27) is installed, the first supporting roll (26) and the second supporting roll (27) all can be around central shaft rotations separately, the first supporting roll (26) is connected by the first cycloconveyor belt (28) with the second supporting roll (27), the other end side wall upper part that fermentation vat (1) is relative with discharge port (9) is installed the 3rd supporting roll (30), the 4th supporting roll (31) is installed near the position of the second rotary conveyor (17) in the 3rd supporting roll (30) below, the 3rd supporting roll (30) and the 4th supporting roll (31) all can be around central shaft rotations separately, the 3rd supporting roll (30) is connected by the second cycloconveyor belt (32) with the 4th supporting roll (31).
3. a kind of fertilizer fermentation equipment according to claim 1, it is characterized in that: between fermentation vat (1) both sides, bottom surface and the sidewall of fermentation vat (1), tilting plane (33) is all set, the angle between tilting plane (33) and fermentation vat (1) bottom surface is 45 °-60 °.
4. a kind of fertilizer fermentation equipment according to claim 1, it is characterized in that: cantilever comprises the arm (5) that many one end and traversing platform (3) are hinged, material casting roller (6) is all installed between adjacent arm (5), arm (5) lower end installation shaft bearing sleeve (34), rotating shaft (35) is installed in bearing housing (34), rotating shaft (35) one end is connected with the material casting roller (6) of arm (5) one sides, rotating shaft (35) the other end arranges spline (36), on the material casting roller (6) of arm (5) opposite side, offer spline (37), spline (36) matches with spline (37).
5. a kind of fertilizer fermentation equipment according to claim 1, it is characterized in that: the 3rd hydro-cylinder (38) is installed on cantilever, the piston rod of the 3rd hydro-cylinder (38) is positioned at cantilever lower end, and temperature, humidity detection probe (39) are installed in the piston rod end of the 3rd hydro-cylinder.
CN201410498898.XA 2014-09-26 2014-09-26 A kind of fertilizer Zymolysis Equipment Expired - Fee Related CN104193440B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410498898.XA CN104193440B (en) 2014-09-26 2014-09-26 A kind of fertilizer Zymolysis Equipment

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Application Number Priority Date Filing Date Title
CN201410498898.XA CN104193440B (en) 2014-09-26 2014-09-26 A kind of fertilizer Zymolysis Equipment

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CN104193440A true CN104193440A (en) 2014-12-10
CN104193440B CN104193440B (en) 2017-06-13

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CN104773936A (en) * 2015-03-27 2015-07-15 成都科仪同创环保科技有限公司 Milling cutter type automatic turner
CN108467283A (en) * 2018-04-28 2018-08-31 南充禾香生物科技有限公司 A kind of box deodoration system
CN110786254A (en) * 2018-08-03 2020-02-14 广东德兴食品股份有限公司 Breeding pig breeding method and fine breeding system for breeding pigs before hybridization
CN111480552A (en) * 2020-03-16 2020-08-04 惠州海洋汇科技有限公司 Method for producing plant culture medium by aerobic fermentation of corn straws
CN114832983A (en) * 2022-04-26 2022-08-02 王彬 Polymer flame retardant spraying equipment for lignite processing

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104773936A (en) * 2015-03-27 2015-07-15 成都科仪同创环保科技有限公司 Milling cutter type automatic turner
CN108467283A (en) * 2018-04-28 2018-08-31 南充禾香生物科技有限公司 A kind of box deodoration system
CN110786254A (en) * 2018-08-03 2020-02-14 广东德兴食品股份有限公司 Breeding pig breeding method and fine breeding system for breeding pigs before hybridization
CN110786254B (en) * 2018-08-03 2022-09-06 广东德兴食品股份有限公司 Breeding pig breeding method and fine breeding system for breeding pigs before hybridization
CN111480552A (en) * 2020-03-16 2020-08-04 惠州海洋汇科技有限公司 Method for producing plant culture medium by aerobic fermentation of corn straws
CN114832983A (en) * 2022-04-26 2022-08-02 王彬 Polymer flame retardant spraying equipment for lignite processing

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