CN112358340A - Organic solid waste's good oxygen composting device convenient to clearance - Google Patents
Organic solid waste's good oxygen composting device convenient to clearance Download PDFInfo
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- CN112358340A CN112358340A CN202011345369.8A CN202011345369A CN112358340A CN 112358340 A CN112358340 A CN 112358340A CN 202011345369 A CN202011345369 A CN 202011345369A CN 112358340 A CN112358340 A CN 112358340A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/986—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being liquid
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/60—Heating or cooling during the treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/993—Arrangements for measuring process parameters, e.g. temperature, pressure or humidity
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Engineering & Computer Science (AREA)
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- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses an aerobic composting device of organic solid wastes convenient to clean, and relates to water treatment environmental protection equipment. In the implementation process of the invention, the composting platform for bearing the organic solid waste is convenient to be drawn out of the composting box through the sealing plate, so that the composting platform is cleaned, and the working difficulty of cleaning workers is reduced.
Description
Technical Field
The invention relates to water treatment environment-friendly equipment, in particular to an aerobic composting device of organic solid wastes, which is convenient to clean.
Background
The organic solid waste comprises kitchen waste, sludge of an urban sewage treatment plant, straw, landscaping waste and the like. The main modes for treating organic solid wastes in the past are landfill and incineration, wherein the landfill easily pollutes underground water, and the incineration can seriously pollute the atmosphere. The microbial aerobic composting is that under the aerobic condition, the aerobic bacteria absorb, oxidize and decompose the waste. The microbes oxidize part of the absorbed organic matter into simple inorganic matter and release the energy for the growth of microbes, and the other part of the organic matter is synthesized into new cytoplasm to make microbes grow and reproduce continuously to produce more organisms.
Compared with treatment modes such as incineration, landfill and the like, the organic solid waste is treated by using the microbial aerobic composting, so that secondary environmental pollution, food safety risks and methane explosion risks are avoided, and the method is one of clean technologies for solving the problem of the organic solid waste. In addition, a large amount of organic matters, elements such as nitrogen and phosphorus and the like in the organic solid waste can provide necessary nutrient components for crops, and can effectively relieve the problems of soil hardening and the like; therefore, the composting treatment of the organic solid waste to prepare the organic fertilizer is an effective way for realizing the reduction, reclamation and harmlessness of the biomass waste.
The chinese utility model specification of patent No. CN205774176U discloses an aerobic composting device of organic solid waste, though this technical scheme has solved to a certain extent among the prior art that the raw materials mixes inhomogeneously, the oxygen suppliment is not enough, the problem that the oxygen utilization ratio is low, nevertheless because screw extrusion dehydration discharging device sets up in the inside in compost storehouse, the degree of difficulty is very big when the clearance, this work degree of difficulty that has greatly improved the clearance workman.
Disclosure of Invention
The invention aims to provide an aerobic composting device of organic solid wastes convenient to clean, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an aerobic composting device of organic solid waste convenient to clean comprises a composting box and a base, wherein four corners of the bottom surface of the composting box are respectively and fixedly connected with the top end of a vertically installed supporting leg, the bottom ends of the supporting legs are all fixedly connected with the top surface of the base, an exhaust port is formed in the top of the composting box, a second water pump is fixed to the bottom of the outer wall of one side of the composting box through bolts, the input end of the second water pump extends into the bottom of the composting box, the output end of the second water pump is fixedly connected with the bottom end of a water inlet pipe fixedly installed on the outer wall of the composting box through a pipe clamp, a sealing plate is fixedly installed on the outer wall of the other side of the composting box through bolts, a plurality of composting platforms which are uniformly distributed are fixedly welded to the side face, facing the composting box, of the composting platform is provided with an opening for the composting platform to extend into the composting box, a water sprinkling plate which is horizontally arranged is fixed above each composting platform in the composting, the watering dish all with inlet tube fixed connection, one side bottom of compost case has the air pump through the bolt fastening, the end of giving vent to anger of air pump and the one end fixed connection of breather pipe, the other end of breather pipe stretches into the bottom rotation of compost case and installs the aeration head.
As a further scheme of the invention: and a valve is fixed on the exhaust port.
As a further scheme of the invention: the sealing plate is fixed with the sealing strip of rubber material through glue with the junction of compost case, improves the leakproofness between sealing plate and the compost case.
Through the above design, place organic solid waste on the compost platform, then send into the inside of compost case through the opening with the compost platform, and it is fixed with the closing plate through the bolt, start second water pump and air pump simultaneously, the filtrating that will set up in compost bottom of the case portion is passed through the inlet tube and is input to the watering dish, thereby spray the compost platform, and the air pump pours into oxygen into the filtrating, improve the oxygen content in the filtrating, thereby improve the compost effect, and through dismantling the closing plate, thereby conveniently clear up the compost platform of installing on the closing plate, high durability and convenient use.
As a further scheme of the invention: the bottom surface of compost case is fixed with the heating pipe through the pipe strap, is fixed with the heater strip in the heating pipe, and the inside bottom of compost case is fixed with heat transfer coil, heat transfer coil's one end and the one end fixed connection of heating pipe, the other end of heating pipe and the input fixed connection of first water pump, the output of first water pump and heat transfer coil's other end fixed connection, first water pump passes through the bolt fastening in the bottom surface of compost case.
As a further scheme of the invention: and a thermometer is fixed on the inner wall of the compost box through bolts.
As a further scheme of the invention: the thermometer and the first water pump are electrically connected with an external temperature control system, so that the temperature inside the compost bin is controlled, and the fermentation effect of the organic solid waste is improved.
As a further scheme of the invention: the bottom surface welding of watering dish has a plurality of evenly distributed's sprinkler bead, offers the apopore of intercommunication sprinkler bead in the bottom of watering dish between sprinkler bead and the watering dish, and the sprinkler bead is hemispherical casing, and evenly offers the hole for water spraying on a plurality of perpendicular to sprinkler bead surfaces on the sprinkler bead to when the sprinkler bead blowout is followed to filtrating, can be to each direction blowout, make filtrating evenly spray on the organic solid waste on the compost platform, improve the compost effect.
As a further scheme of the invention: a plurality of fumaroles have evenly been seted up to the side of aeration head, and the aeration head is discoid, and arranges along the tangential direction of aeration head after the fumarole bending, can promote the aeration head rotation after oxygen is spout from the fumarole to improve the effect that oxygen fused into in the filtrating.
As a further scheme of the invention: the top surface welded fastening of aeration head has vertical pivot, and welded fastening has horizontally stirring leaf in the pivot, when the aeration head rotated under oxygen spun pushing action, drives pivot and stirring leaf and rotates to stir filtrating, further improved the effect that oxygen fused into filtrating.
As a further scheme of the invention: the compost platform includes compost box, the inside welded fastening of compost box has the level to set up the end net that is used for bearing organic solid waste, the tip welded fastening of end net has the side net between compost box, the bottom of compost box sets up to the inclined plane, and the compost box that is located end net below has seted up the outlet, when spraying, filtrating enters into on the inclined plane that compost box bottom set up through end net, and discharge through the outlet, avoided setting up the filtrating on the compost platform of top like this and continued to spray the compost platform of setting in the below, thereby cause to spray inhomogeneous condition and take place.
Compared with the prior art, the invention has the beneficial effects that:
1) a compost platform for bearing organic solid waste is convenient for take out outside the compost case through the closing plate to clear up the compost platform, reduced clearance workman's the work degree of difficulty.
2) Through the end water outlet design of the composting platforms, each composting platform is provided with a sprinkling plate, and through the structural design of the spray head arranged at the bottom of each sprinkling plate, the composting platform achieves the effect of uniform sprinkling when filtrate is sprinkled, so that the composting effect is improved.
3) The heating pipe that sets up through compost bottom of the case portion cooperates the design of the thermometer that sets up in the compost incasement, can regulate and control the inside temperature of compost incasement to make the inside temperature of compost incasement keep being favorable to the within range that the fermentation reaction goes on, thereby improve the compost effect.
4) Through the design of aeration head, make oxygen enter into the compost incasement after, can effectively improve the effect that oxygen fuses into the filtrating to further improve the fermentation effect of compost incasement.
Drawings
FIG. 1 is a schematic structural view of an aerobic composting apparatus for organic solid waste which is easy to clean.
FIG. 2 is a schematic view showing a structure of a sprinkling plate in an aerobic composting apparatus for organic solid wastes which is easy to clean.
FIG. 3 is a schematic structural view of a sprinkler head in an aerobic composting apparatus for organic solid waste convenient to clean.
Fig. 4 is a top view of an aeration head in an aerobic composting apparatus for organic solid waste that is easy to clean.
FIG. 5 is a schematic structural diagram of a stirring blade mounted on an aeration head in an aerobic composting apparatus for organic solid waste convenient to clean.
FIG. 6 is a schematic structural view of a composting platform in an aerobic composting apparatus for organic solid waste that is easy to clean.
As shown in the figure: the composting device comprises a base 1, supporting legs 2, a heating pipe 3, a heating wire 4, a first water pump 5, a heat exchange coil 6, an air pump 7, an air pipe 8, an aeration head 9, a sealing plate 10, an opening 11, a composting platform 12, a composting box 121, a water outlet 122, a side net 123, a bottom net 124, an air outlet 13, a composting box 14, a watering plate 15, a water inlet pipe 16, a second water pump 18, a water outlet hole 19, a water spraying head 20, a water spraying hole 21, a rotating shaft 22, stirring blades 23 and an air spraying hole 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in the embodiment of the present invention, an aerobic composting device for organic solid waste convenient to clean includes a composting box 14 and a base 1, four corners of the bottom surface of the composting box 14 are respectively and fixedly connected to the top end of a vertically installed supporting leg 2, the bottom ends of the supporting legs 2 are all and fixedly connected to the top surface of the base 1, the top of the composting box 14 is provided with an exhaust port 13, a valve is fixed on the exhaust port 13, the bottom of the outer wall of one side of the composting box 14 is fixed with a second water pump 18 through a bolt, the input end of the second water pump 18 extends into the bottom of the composting box 14, the output end of the second water pump 18 is fixedly connected to the bottom end of a water inlet pipe 16 fixedly installed on the outer wall of the composting box 14 through a pipe clamp, a sealing plate 10 is fixedly installed on the outer wall of the other side of the composting box 14 through a bolt, a plurality of composting platforms 12 uniformly distributed are welded and fixed, the position that compost case 14 corresponds compost platform 12 has been seted up and has been supplied compost platform 12 to stretch into the opening 11 in compost case 14, the top of every compost platform 12 is at the water spray dish 15 that the compost case 14 internal fixation has the level to set up, water spray dish 15 all with inlet tube 16 fixed connection, one side bottom of compost case 14 is fixed with air pump 17 through the bolt, the end of giving vent to anger of air pump 17 and the one end fixed connection of breather pipe 8, the bottom rotation that the other end of breather pipe 8 stretched into compost case 14 installs aeration head 9.
It should be noted that, organic solid waste is placed on the composting platform 12, then the composting platform 12 is sent into the composting box 14 through the opening 11, the sealing plate 10 is fixed through the bolt, the second water pump 18 and the air pump 7 are started simultaneously, filtrate arranged at the bottom of the composting box 14 is input into the sprinkling disc 15 through the water inlet pipe 16, so that the composting platform 12 is sprinkled, the air pump 7 injects oxygen into the filtrate, the oxygen content in the filtrate is improved, so that the composting effect is improved, and the sealing plate 10 is detached, so that the composting platform 12 installed on the sealing plate 10 is conveniently cleaned, and the use is convenient.
In order to improve the sealing performance between the sealing plate 10 and the compost bin 14, a rubber sealing strip is fixed at the joint of the sealing plate 10 and the compost bin 14 by glue.
The underrun pipe strap of compost case 14 is fixed with heating pipe 3, and 3 internal fixations of heating pipe have heater strip 4, and the inside bottom of compost case 14 is fixed with heat exchange coil 6, heat exchange coil 6's one end and the one end fixed connection of heating pipe 3, the other end of heating pipe 3 and the input fixed connection of first water pump 5, the output of first water pump 5 and heat exchange coil 6's other end fixed connection, first water pump 5 passes through the bolt fastening in the bottom surface of compost case 14.
The heated water is input into the heat exchange coil 6 by the first water pump 5, and the filtrate at the bottom of the compost bin 14 is heated by circulating the heating pipe 3 and the heat exchange coil 6.
The thermometer 17 is fixed on the inner wall of the compost box 14 through bolts, and the thermometer 17 and the first water pump 5 are both electrically connected with an external temperature control system, so that the temperature inside the compost box 14 is controlled, and the fermentation effect of the organic solid waste is improved.
The bottom surface welding of watering dish 15 has a plurality of evenly distributed's sprinkler bead 20, and the apopore 19 of intercommunication sprinkler bead 20 is seted up in the bottom of watering dish 15 between sprinkler bead 20 and the watering dish 15, and sprinkler bead 20 is hemispherical casing, and evenly sets up the hole for water spraying 21 on a plurality of perpendicular to sprinkler bead 20 surfaces on the sprinkler bead 20 to when the 20 blowout of sprinkler bead is followed to filtrating, can spout to all directions, make on the organic solid waste of filtrating can evenly spray on compost platform 12, improve the compost effect.
A plurality of fumaroles 24 have evenly been seted up to aeration head 9's side, and aeration head 9 is discoid, and arranges along aeration head 9's tangential direction after 24 bending of fumarole, can promote aeration head 9 to rotate after oxygen is spout from fumarole 24 to improve the effect that oxygen melts into in the filtrating.
The top surface welded fastening of aeration head 9 has vertical pivot 22, and welded fastening has horizontally stirring leaf 23 in the pivot 22, when aeration head 9 rotated under oxygen spun pushing action, drives pivot 22 and stirring leaf 23 and rotates to stir filtrating, further improved the effect that oxygen fused into filtrating.
The composting platform 12 comprises composting boxes 121, a bottom net 124 horizontally arranged and used for bearing organic solid wastes is welded and fixed inside the composting boxes 121, side nets 123 are welded and fixed at the end parts of the bottom net 124 between the composting boxes 121, the bottom of the composting boxes 121 is arranged to be an inclined plane, a water outlet 122 is formed in the composting box 121 below the bottom net 124, when spraying, filtrate enters the inclined plane formed at the bottom of the composting box 121 through the bottom net 124 and is discharged through the water outlet 122, and therefore the situation that the filtrate arranged on the composting platform 12 above continues to spray the composting platform 12 below is avoided, and spraying is not uniform.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (10)
1. An aerobic composting device of organic solid waste convenient to clean comprises a composting box (14) and a base (1), and is characterized in that four corners of the bottom surface of the composting box (14) are respectively fixedly connected with the top ends of vertically-installed supporting legs (2), the bottom ends of the supporting legs (2) are fixedly connected with the top surface of the base (1), an exhaust port (13) is formed in the top of the composting box (14), a second water pump (18) is fixed to the bottom of the outer wall of one side of the composting box (14) through a bolt, the input end of the second water pump (18) extends into the bottom of the composting box (14), the output end of the second water pump (18) is fixedly connected with the bottom end of a water inlet pipe (16) fixedly installed on the outer wall of the composting box (14) through a pipe clamp, a sealing plate (10) is fixedly installed on the outer wall of the other side of the composting box (14) through a bolt, a plurality of composting platforms (12) which are uniformly distributed are welded and fixed to the sealing plate (10) towards the side surface, compost case (14) correspond the position of compost platform (12) and seted up confession compost platform (12) and stretch into opening (11) in compost case (14), the top of every compost platform (12) is at watering dish (15) that compost case (14) internal fixation has the level to set up, watering dish (15) all with inlet tube (16) fixed connection, there is air pump (17) one side bottom of compost case (14) through the bolt fastening, the one end fixed connection of giving vent to anger end and breather pipe (8) of air pump (17), the other end of breather pipe (8) stretches into the bottom rotation of compost case (14) and installs aeration head (9).
2. An aerobic composting device of organic solid waste that is easy to clean as claimed in claim 1, characterised in that the valve is fixed to the exhaust port (13).
3. The aerobic composting apparatus of organic solid waste convenient to clean as claimed in claim 1, wherein the joint of the sealing plate (10) and the compost bin (14) is fixed with a rubber sealing strip by glue.
4. The aerobic composting device of organic solid waste convenient to clean as claimed in claim 1, wherein the bottom surface of the composting box (14) is fixed with a heating pipe (3) through a pipe clamp, a heating wire (4) is fixed in the heating pipe (3), a heat exchange coil (6) is fixed at the bottom inside the composting box (14), one end of the heat exchange coil (6) is fixedly connected with one end of the heating pipe (3), the other end of the heating pipe (3) is fixedly connected with the input end of a first water pump (5), the output end of the first water pump (5) is fixedly connected with the other end of the heat exchange coil (6), and the first water pump (5) is fixed on the bottom surface of the composting box (14) through bolts.
5. An aerobic composting device of organic solid waste that is easy to clean up as claimed in claim 1, characterised in that the thermometer (17) is bolted to the inner wall of the compost bin (14).
6. An aerobic composting device of organic solid waste convenient to clean up as claimed in claim 4 or 5 where the first water pump (5) and the thermometer (17) are both electrically connected to an external temperature control system.
7. The aerobic composting device of organic solid waste convenient to clean as claimed in claim 1, wherein the bottom of the sprinkling plate (15) is welded with a plurality of sprinkling heads (20) distributed uniformly, the bottom of the sprinkling plate (15) between the sprinkling heads (20) and the sprinkling plate (15) is provided with water outlet holes (19) communicated with the sprinkling heads (20), the sprinkling heads (20) are hemispherical shells, and the sprinkling heads (20) are provided with a plurality of sprinkling holes (21) uniformly vertical to the surfaces of the sprinkling heads (20).
8. The aerobic composting apparatus of organic solid waste convenient for cleaning as claimed in claim 1, wherein the aeration head (9) has a plurality of air injection holes (24) uniformly formed on the side surface thereof, the aeration head (9) is disc-shaped, and the air injection holes (24) are arranged along the tangential direction of the aeration head (9) after being bent.
9. The aerobic composting device of organic solid waste convenient for cleaning as claimed in claim 8, wherein the top surface of the aeration head (9) is welded and fixed with a vertical rotating shaft (22), and the rotating shaft (22) is welded and fixed with a horizontal stirring blade (23).
10. The aerobic composting device of organic solid waste convenient for cleaning as claimed in claim 1, wherein the composting platform (12) comprises composting boxes (121), a bottom net (124) horizontally arranged for bearing organic solid waste is welded and fixed in the composting boxes (121), a side net (123) is welded and fixed at the end of the bottom net (124) between the composting boxes (121), the bottom of the composting boxes (121) is an inclined plane, and a water outlet (122) is opened on the composting box (121) below the bottom net (124).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011345369.8A CN112358340A (en) | 2020-11-26 | 2020-11-26 | Organic solid waste's good oxygen composting device convenient to clearance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011345369.8A CN112358340A (en) | 2020-11-26 | 2020-11-26 | Organic solid waste's good oxygen composting device convenient to clearance |
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| CN112358340A true CN112358340A (en) | 2021-02-12 |
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| CN202011345369.8A Pending CN112358340A (en) | 2020-11-26 | 2020-11-26 | Organic solid waste's good oxygen composting device convenient to clearance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939648A (en) * | 2021-04-16 | 2021-06-11 | 李正婷 | Fermentation box equipment |
| CN113860932A (en) * | 2021-09-17 | 2021-12-31 | 同济大学 | A device that is used for solid waste compost intelligence moisturizing oxygenation |
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2020
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| CN105646023A (en) * | 2016-02-26 | 2016-06-08 | 铁道第三勘察设计院集团有限公司 | Aerobic fermentation composting device for sludge |
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| CN206553422U (en) * | 2017-03-07 | 2017-10-13 | 天津农学院 | A kind of drawer type aerobic composting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939648A (en) * | 2021-04-16 | 2021-06-11 | 李正婷 | Fermentation box equipment |
| CN113860932A (en) * | 2021-09-17 | 2021-12-31 | 同济大学 | A device that is used for solid waste compost intelligence moisturizing oxygenation |
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Application publication date: 20210212 |