CN202181301U - Overground methane tank capable of adjusting methane pressure - Google Patents
Overground methane tank capable of adjusting methane pressure Download PDFInfo
- Publication number
- CN202181301U CN202181301U CN201120288688XU CN201120288688U CN202181301U CN 202181301 U CN202181301 U CN 202181301U CN 201120288688X U CN201120288688X U CN 201120288688XU CN 201120288688 U CN201120288688 U CN 201120288688U CN 202181301 U CN202181301 U CN 202181301U
- Authority
- CN
- China
- Prior art keywords
- methane
- pond
- holder
- gas
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/26—Constructional details, e.g. recesses, hinges flexible
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Biomedical Technology (AREA)
- Sustainable Development (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Clinical Laboratory Science (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses an overground methane tank capable of adjusting methane pressure, which includes an air storage tank (1) and a fermenting tank (6) provided with a feed opening (2), a discharge opening (3), an air outlet (4) and an air inlet (5), wherein the air storage tank (1) and the fermenting tank (6) are separated structures and communicated through an air pipe (7); an air vent (8) is arranged at the upper end of the air storage tank (1), the lower end thereof is placed in a water tank (8); and the bottom of the air storage tank (1) is communicated with the water tank (8). The methane tank adopts the fermenting tank and the air storage tank which are separated structures to adjust the methane pressure inside the air storage tank to balance with the atmospheric pressure all along, can be directly manufactured and formed through rolling up a flexible material, so that the overground methane tank is not limited to volume, is suitable for mass production and popularization, facilitates manufacture and has simple structure and convenience in use.
Description
Technical field
The utility model belongs to the biogas production field, is specifically related to a kind of ground methane-generating pit of adjustable biogas pressure.
Background technology
Generally adopt airtight methane-generating pit so that organic substance is fermented into biogas on the market now; Its benefit is to have cut off the route of transmission that ight soil is propagated infectious intestinal disease, parasitosis or other diseases; Reduce and controlled of the pollution of random discharging ight soil environment; Be the comprehensive construction of an energy, health, fertilizer, simultaneously, natural pond liquid, natural pond slag can be used for livestock-raising industry and infertile field.
But the methane-generating pit of this sealing adopts fermentation vat and air storage chamber integral structure usually, promptly; Fermentation vat and air storage chamber form enclosed space jointly, and this enclosed space is usually located at underground, place some organic substances at this enclosed space; Such as stalk, weeds, leaf or human and animal excreta the like waste; Make them become biogas at certain temperature, humidity, acidity condition bottom fermentation, its shortcoming is mainly: fermentation vat and air storage chamber integral structure can cause the output of biogas and influence that pressure usually receives fermentation vat internal temperature, humidity and acidity and instability, when temperature, humidity, acidity are comparatively moderate; The biogas of air storage chamber is on the increase; Pressure constantly increases, and when temperature, humidity and acidity were not moderate, the biogas quantity of air storage chamber descended, pressure also descends to some extent; Therefore the pressure of biogas is very unbalanced, and is very inconvenient to cause productive life to be used; Further be, this methane-generating pit is positioned at underground, can receive the restriction of volume usually, its method of manufacture is complicated, incompatibility scale operation also is not easy to remove at the remaining organic materials of accomplishing after biogas make in fermentation, also inconvenience is keeped in repair in more not environmental protection.
The utility model content
To above-mentioned deficiency, but the purpose of the utility model provides a kind of flexible biogas pressure, makes it keep balance, and does not receive the ground methane-generating pit of volume restrictions.
The purpose of the utility model is to realize through such technical scheme: a kind of ground methane-generating pit of adjustable biogas pressure; Comprise gas-holder and the fermentation vat that has opening for feed, discharge port, air outlet, water outlet; Said gas-holder and fermentation vat are split-type structural, and both are communicated with through tracheae, and the upper end of gas-holder is provided with venting port; The lower end places the pond, and the bottom of gas-holder is communicated with the pond.
Said fermentation vat is divided into three parts, comprise the spill pond at the bottom of, tubular pond body and dome shape Chi Ding, wherein; The two ends up and down of pond body are respectively with overlap joint at the bottom of Chi Ding and the pond and through bolt, because fermentation vat is that three parts assemble, therefore; At the bottom of the pond, pond body and Chi Dingke machine-shaping respectively; Its manufacturing and assembling all do not receive the restriction of volume, can directly make on ground and assembling, are applicable to scale operation and popularization.
Because fermentation vat is that three parts assemble; Therefore; Can at the bottom of whole pond body, pond, all twine the strip glass fiber yarn,, make fermentation vat cause the swelling fracture of fermentation vat too greatly because of biogas pressure with intensity and the stopping property that strengthens above-mentioned junction with the junction of pond body, pond body and Chi Ding.
Said gas-holder also is divided into three parts, comprises can body, End Pieces, and jar end perforate also places the pond; With the End Pieces overlap joint and through bolt, therefore, can body, End Pieces can be distinguished machine-shaping respectively at the two ends up and down of can body; Its manufacturing and assembling all do not receive the restriction of volume; The same with fermentation vat, also can directly make and assembling on ground, be applicable to scale operation and popularization.
Likewise, for the two ends up and down that strengthen can body and the intensity and the stopping property of End Pieces lap-joint, all twine the strip glass fiber yarn at can body, can body and cover and can body and a jar junction, the end.
As the further improvement of the utility model, the bottom in said pond fixedly installs at least 2 pillar stiffeners, and said gas-holder places on these pillar stiffeners, thereby operator can get into the operation of being correlated with of the inside of gas-holder easily.
For organic materials is mixed, the fermenting process of biogas is carried out smoothly, be provided with agitated pool at the front end of opening for feed.
Be provided with sump pump between said agitated pool and the opening for feed; Thereby can make the mixing organic materials in the agitated pool enter in the fermentation vat better; The front end of opening for feed is provided with vacuum breaker; When organic materials quantity is comparatively suitable in fermentation vat, close vacuum breaker, prevent that organic materials is back to agitated pool.
Said fermentation vat is by curling bonding the forming of fiberglass products, and its thickness is more preferably greater than 2cm, to increase its intensity and work-ing life; Certainly fermentation vat also can adopt the bonding making of other flexible materialss than easy-formation with practical situation as required.
Owing to adopted said structure, the beneficial effect of the utility model is following:
(1) the ground methane-generating pit that provides of the utility model adopts split type fermentation vat and gas-holder; Therefore; The organic materials fermentation separates with depositing of gas to be carried out, and can keep like this remaining certain biogas storage in the gas-holder, has prevented that effectively the organic materials in the fermentation vat is low because of the biogas production amount that the detrimentally affect that receives temperature, humidity or acidity causes; Supply is not enough, helps carrying out smoothly of productive life.
(2) the utility model places the pond with gas-holder, and its bottom is communicated with the pond, therefore; When the biogas pressure in the gas-holder was higher, gas-holder moved upward with respect to the pond, when the biogas pressure in the gas-holder is low; Gas-holder moves downward with respect to the pond; Change the useful space that gas-holder is used to store biogas thus, regulate the biogas pressure in the gas-holder, make itself and normal atmosphere remain balance with this.
(3) further be that the method for manufacture of above-mentioned fermentation vat and gas-holder is assembled, at the bottom of wherein fermentation vat comprises the pond, pond body and Chi Ding; When making moulding, need not molding, the making moulding of its pond body can directly adopt square material to curl into; Chi Ding adopts fan-shaped material to curl into; Form such as adopting the composite glass fiber that forms by synthetic resin-bound to curl, therefore do not receive the restriction of volume, be adapted to scale operation and popularization as material; It is simple in structure, and is easy to use.
(4) the ground methane-generating pit that provides of the utility model has overcome in the prior art and has been arranged at underground methane-generating pit and inconvenience that bring; Methane-generating pit is arranged on the ground; This not only is beneficial to operator whole methane-generating pit is overhauled, and also can from discharge port residue the fermentation vat or remaining organic materials be removed from fermentation vat easily simultaneously, is beneficial to the next batch organic materials of packing into; Also very environmental protection simultaneously, safety performance is also better.
Description of drawings
Fig. 1 is the structure diagram of methane-generating pit among the utility model embodiment.
Fig. 2 is the structure iron after twining with pond body overlap joint and with glass fiber yarn at the bottom of the pond of fermentation vat among Fig. 1.
Fig. 3 is the vertical view in pond.
Embodiment
For purpose, technical scheme and the beneficial effect that is expressly understood the utility model more, below in conjunction with accompanying drawing the utility model is done further explanation, but the protection domain of the utility model is not limited in following examples.
Like Fig. 1, Fig. 2 and shown in Figure 3; A kind of ground methane-generating pit of adjustable biogas pressure comprises gas-holder 1 and the fermentation vat 6 that has opening for feed 2, discharge port 3, air outlet 4, water outlet 5, and said gas-holder 1 is split-type structural with fermentation vat 6; Both are communicated with through tracheae 7; The upper end of gas-holder 1 is provided with venting port 11, and the lower end places pond 8, and the bottom of gas-holder 1 is communicated with pond 8; Said fermentation vat 6 is divided into three parts, comprises 6-1 at the bottom of the spill pond, tubular pond body 6-2 and top, dome shape pond 6-3, and wherein, the two ends up and down of pond body 6-2 overlap with 6-1 at the bottom of top, pond 6-3 and the pond respectively and pass through bolt; Strip glass fiber yarn 12 is all twined in the junction of 6-1 and pond body 6-2 and pond body 6-2 and pond top 6-3 at the bottom of pond body 6-2, pond; Said gas-holder 1 is divided into three parts, comprises can body 1-1, cover 1-2 and jar end 1-3, and jar end 1-3 perforate also places pond 8, the two ends up and down of can body 1-1 respectively with cover 1-2 with jar end 1-3 overlap joint and pass through bolt; All twine strip glass fiber yarn 12 at can body 1-1, can body 1-1 and cover 1-2 and can body 1-1 with a jar end 1-3 junction; The bottom in said pond 8 fixedly installs at least 2 pillar stiffeners 9, and said gas-holder 1 places on these pillar stiffeners 9; Front end at opening for feed 2 is provided with agitated pool 10; Be provided with sump pump 13 between said agitated pool 10 and the opening for feed 2, the front end of opening for feed 2 is provided with vacuum breaker 14; Said fermentation vat 6 is fiberglass products with gas-holder 1, and its thickness is all greater than 2cm.
And this methane-generating pit can be produced and assemble through following steps:
The first step: the moulding of fermentation vat 6:
At first carry out the moulding of pond body 6-2, promptly earlier make square matrix with glasscloth and synthetic resins, should square matrix curling and be fixedly connected into tubular through shaper again;
Next carries out the moulding of 6-1 at the bottom of the pond, and promptly according to the diameter adhering glass cloth of tubular pond body 6-2, its edge upsweeps in order to fixing with pond body 6-2 overlap joint;
Carry out the moulding of pond top 6-3 then, promptly according to the diameter of tubular pond body 6-2 with the bonding one-tenth dome shape of glasscloth;
Then 6-1 at the bottom of in type pond body 6-2, pond top 6-3 and the pond is overlapped and use bolt again, and strip glass fiber yarn 12 is twined with wrapping machine in the junction of 6-1 at the bottom of above-mentioned pond body 6-2, pond body 6-2 and pond top 6-3 and pond body 6-2 and pond;
Second step: on the 6-3 of pond top, set out gas port 4, on the body 6-2 of pond, offer opening for feed 2, discharge port 3 and water outlet 5, and be connected to agitated pool 10 after opening for feed 2 assembled vacuum breaker 14 and sump pump 13, wherein, water outlet 5 is opened in the middle and upper part of pond body 6-2;
The 3rd step: the moulding of gas-holder 1: adopt the method identical to carry out the moulding of gas-holder 1, offer the communication port and the venting port 11 of tracheae 7 then at the top of gas-holder 1, jar end 1-3 perforate with the first step;
The 4th step: 2 above pillar stiffeners 9 of cast in pond 8;
The 5th step: with tracheae 7 fermentation vat 6 is communicated with gas-holder 1,, at last gas-holder 1 is placed on the pillar stiffener 9 in pond 8 toward pond 8 water fillings.
The principle of work of above-mentioned ground methane-generating pit is: after methane-generating pit is in place on the ground; Through in the sump pump 13 suction fermentation vats 6, temperature, humidity, acidity and other correlated conditions regulated in the fermentation vat 6 make these organic materialss fermentations with the organic materials that mixes in the agitated pool 10, and the biogas that fermentation produces floats among top, the pond 6-3 of fermentation vat and through tracheae 7 and is transported in the gas-holder 1; Biogas in gas-holder 1 is more; When pressure was big, gas-holder 1 moved upward with respect to pond 8, because the bottom of gas-holder 1 is communicated with pond 8; Therefore be used to deposit the useful area increase of biogas in the gas-holder 1; Thereby reduce biogas pressure, otherwise can increase biogas pressure, and then make the biogas pressure in the gas-holder 1 keep balance with normal atmosphere all the time.
Claims (9)
1. the ground methane-generating pit of an adjustable biogas pressure; Comprise gas-holder (1) and have the fermentation vat (6) of opening for feed (2), discharge port (3), air outlet (4), water outlet (5); It is characterized in that: said gas-holder (1) is split-type structural with fermentation vat (6), and both are communicated with through tracheae (7), and the upper end of gas-holder (1) is provided with venting port (11); The lower end places pond (8), and the bottom of gas-holder (1) is communicated with pond (8).
2. ground as claimed in claim 1 methane-generating pit; It is characterized in that: said fermentation vat (6) is divided into three parts; Comprise (6-1) at the bottom of the spill pond, tubular pond body (6-2) and dome shape Chi Ding (6-3); Wherein, the two ends up and down of pond body (6-2) overlap with Chi Ding (6-3) He Chidi (6-1) respectively and pass through bolt.
3. ground as claimed in claim 2 methane-generating pit is characterized in that: (6-1) all twines strip glass fiber yarn (12) with pond body (6-2) and pond body (6-2) with the junction of Chi Ding (6-3) at the bottom of pond body (6-2), pond.
4. like claim 1,2 or 3 described ground methane-generating pits; It is characterized in that: said gas-holder (1) is divided into three parts; Comprise can body (1-1), cover (1-2) and jar end (1-3); Jar end (1-3) perforate also places pond (8), and the two ends up and down of can body (1-1) overlap with cover (1-2) and a jar end (1-3) respectively and pass through bolt.
5. ground as claimed in claim 4 methane-generating pit is characterized in that: all twine strip glass fiber yarn (12) with cover (1-2) and can body (1-1) with jar (1-3) junction, the end at can body (1-1), can body (1-1).
6. ground as claimed in claim 5 methane-generating pit is characterized in that: the bottom of said pond (8) fixedly installs at least 2 pillar stiffeners (9), and said gas-holder (1) places on these pillar stiffeners (9).
7. ground as claimed in claim 6 methane-generating pit is characterized in that: the front end at opening for feed (2) is provided with agitated pool (10).
8. ground as claimed in claim 7 methane-generating pit is characterized in that: be provided with sump pump (13) between said agitated pool (10) and the opening for feed (2), the front end of opening for feed (2) is provided with vacuum breaker (14).
9. ground as claimed in claim 8 methane-generating pit is characterized in that: said fermentation vat (6) and gas-holder (1) are fiberglass products.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201120288688XU CN202181301U (en) | 2011-08-10 | 2011-08-10 | Overground methane tank capable of adjusting methane pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201120288688XU CN202181301U (en) | 2011-08-10 | 2011-08-10 | Overground methane tank capable of adjusting methane pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202181301U true CN202181301U (en) | 2012-04-04 |
Family
ID=46174344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201120288688XU Withdrawn - After Issue CN202181301U (en) | 2011-08-10 | 2011-08-10 | Overground methane tank capable of adjusting methane pressure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202181301U (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102321526A (en) * | 2011-08-10 | 2012-01-18 | 德阳好韵复合材料有限公司 | Ground methane tank capable of regulating methane pressure and manufacturing method thereof |
CN102994376A (en) * | 2013-01-07 | 2013-03-27 | 王柱石 | Domestic pregnant type liquid communicating vessel biogas digester |
CN103525691A (en) * | 2013-10-15 | 2014-01-22 | 方青海 | Pressure slagging machine |
CN103627629A (en) * | 2013-12-06 | 2014-03-12 | 攀枝花市龙腾四海农牧业有限公司 | Methane tank positive-pressure protector |
CN103820309A (en) * | 2014-03-13 | 2014-05-28 | 方青海 | Water level regulating valve for anaerobic fermentation pool |
CN104513788A (en) * | 2013-10-08 | 2015-04-15 | 苏玉龙 | Large-scale biomass pool |
-
2011
- 2011-08-10 CN CN201120288688XU patent/CN202181301U/en not_active Withdrawn - After Issue
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102321526A (en) * | 2011-08-10 | 2012-01-18 | 德阳好韵复合材料有限公司 | Ground methane tank capable of regulating methane pressure and manufacturing method thereof |
CN102321526B (en) * | 2011-08-10 | 2013-10-16 | 德阳好韵复合材料有限公司 | Ground methane tank capable of regulating methane pressure and manufacturing method thereof |
CN102994376A (en) * | 2013-01-07 | 2013-03-27 | 王柱石 | Domestic pregnant type liquid communicating vessel biogas digester |
CN104513788A (en) * | 2013-10-08 | 2015-04-15 | 苏玉龙 | Large-scale biomass pool |
CN103525691A (en) * | 2013-10-15 | 2014-01-22 | 方青海 | Pressure slagging machine |
CN103627629A (en) * | 2013-12-06 | 2014-03-12 | 攀枝花市龙腾四海农牧业有限公司 | Methane tank positive-pressure protector |
CN103627629B (en) * | 2013-12-06 | 2015-08-19 | 攀枝花市龙腾四海农牧业有限公司 | Methane tank positive-pressure protector |
CN103820309A (en) * | 2014-03-13 | 2014-05-28 | 方青海 | Water level regulating valve for anaerobic fermentation pool |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN202181301U (en) | Overground methane tank capable of adjusting methane pressure | |
CN103740585B (en) | Straw methane fermentation system | |
CN208807387U (en) | A kind of photovoltaic fish and vegetable symbiotic system | |
CN203960073U (en) | Fertilizer canopy slot type static fermentation device | |
CN100389097C (en) | Assembled movable manure producing and energy source utilizing apparatus | |
CN215380306U (en) | Winter jujube inoculation AM fungi breeding device | |
CN206308366U (en) | A kind of biogas stalk makes organic fertilizer integrated apparatus | |
CN202643689U (en) | Plant straw solar energy gasification and waste residue and waste water collection and utilization device | |
CN204702750U (en) | A kind of methane-generating pit automatic cycling feeding apparatus | |
CN106148171B (en) | A kind of device and application method of straw degradation and anaerobic ferment for methane | |
CN202208720U (en) | Foldable methane and biogas manure anaerobic reaction device | |
CN201834914U (en) | Mobile biogas fermentation apparatus | |
CN101723524B (en) | Biogas slurry pretreatment method and device for foliar fertilizer and drip irrigation fertilizer | |
CN201890831U (en) | Greenhouse biogas manure fermenter | |
CN101318853B (en) | Process and equipment for solar energy gasification of plant stalk and comprehensive utilization of waste slag | |
CN102321526B (en) | Ground methane tank capable of regulating methane pressure and manufacturing method thereof | |
CN206940757U (en) | A kind of method and apparatus that organic fertilizer is produced using edible fungus culturing waste material | |
CN205473749U (en) | Straw fermentation methane -generating pit | |
CN201873673U (en) | Large-sized reinforced concrete methane fermentation tank | |
CN201534839U (en) | Closed-basking type efficient straw and excrement methane tank | |
CN107868754A (en) | A kind of methane-generating pit | |
CN1718719A (en) | Continuous feeding discharging material sludge gas dry fermentation device and its temperature rising and maintaining method | |
CN103555770B (en) | A kind of agricultural byproducts processing and domestic refuse processing method and processing device | |
CN207070663U (en) | Breeding integration ecological system | |
CN105670910A (en) | Household semicontinuous straw anaerobic fermentation device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20120404 Effective date of abandoning: 20131016 |
|
RGAV | Abandon patent right to avoid regrant |