CN216778418U - Dirty fermentation vat of excrement - Google Patents
Dirty fermentation vat of excrement Download PDFInfo
- Publication number
- CN216778418U CN216778418U CN202220315586.0U CN202220315586U CN216778418U CN 216778418 U CN216778418 U CN 216778418U CN 202220315586 U CN202220315586 U CN 202220315586U CN 216778418 U CN216778418 U CN 216778418U
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- Prior art keywords
- chamber
- pipe
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- air
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- 238000000855 fermentation Methods 0.000 title claims abstract description 30
- 230000004151 fermentation Effects 0.000 title claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 55
- 239000007921 spray Substances 0.000 claims abstract description 54
- 238000001035 drying Methods 0.000 claims abstract description 37
- 238000010521 absorption reaction Methods 0.000 claims abstract description 29
- 238000001179 sorption measurement Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 230000002550 fecal effect Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000002250 absorbent Substances 0.000 claims abstract description 4
- 230000002745 absorbent Effects 0.000 claims abstract description 4
- 239000003463 adsorbent Substances 0.000 claims abstract description 4
- 239000002781 deodorant agent Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002274 desiccant Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 210000005056 cell body Anatomy 0.000 claims description 3
- 241000411851 herbal medicine Species 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021488 crystalline silicon dioxide Inorganic materials 0.000 claims 1
- 230000001172 regenerating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000000741 silica gel Substances 0.000 description 9
- 229910002027 silica gel Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000004332 deodorization Methods 0.000 description 4
- 241000282898 Sus scrofa Species 0.000 description 3
- 241000272525 Anas platyrhynchos Species 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 229910002026 crystalline silica Inorganic materials 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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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
- 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
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a fecal sewage fermentation tank, which comprises a tank body for fecal sewage fermentation and a gas treatment unit communicated with the tank body and used for treating waste gas, wherein the gas treatment unit comprises a spray chamber, a drying chamber and an absorption chamber which are sequentially connected through pipelines, the spray chamber is communicated with the tank body, and the absorption chamber is communicated with the outside; wherein, be equipped with in the spray booth and be used for spraying deodorant mechanism that sprays to gas, be equipped with in the drying chamber and carry out dry drier layer to gas, be equipped with in the absorption chamber and carry out absorbent adsorbent layer to gas. According to the utility model, the structure of the gas treatment unit is improved, the drying chamber is arranged between the spray chamber and the absorption chamber, and the waste gas after spray treatment can be dried and then enters the absorption chamber for treatment, so that the influence of high humidity in the gas on the adsorption effect of the adsorption material layer is avoided, the waste gas treatment effect of the gas treatment unit on the use process of the fermentation tank is further ensured, and the gas treatment unit can be used in scenes with high requirements.
Description
Technical Field
The utility model relates to the technical field of fermentation tanks, in particular to a fecal sewage fermentation tank.
Background
In the process of breeding livestock (chicken, duck, goose, pig, etc.), the excrements of the livestock can be used as fertilizer; the fermented excrement of chicken, duck and goose may be mixed with inorganic fertilizer or used directly, and the fermented excrement of pig may be used directly in fertilizing to realize environment friendly breeding of farm animal.
The existing fermentation tank is built underground and also directly arranged on the ground, and has the main function of ensuring that the excrement in the tank is fermented and preset at a certain temperature and a certain humidity, so that harmful bacteria in the excrement can be conveniently removed, and the problems that the excrement is directly used without fermentation to cause crop seedling burning and the like are avoided.
As shown in fig. 1, a fermentation tank for fermenting pig manure in the prior art mainly comprises a tank body 10, wherein the tank body 10 is provided with a feeding pipe 101, a discharging pipe 102 and an exhaust pipe; because the feces can generate ammonia gas and other odor in the fermentation process, in order to deodorize the odor, the exhaust pipe is generally connected with a gas deodorization unit; the gas deodorization unit comprises a spray chamber 20 and an absorption chamber 30 which are communicated, wherein a spray pipe 201 is arranged in the spray chamber 20, and an adsorbing material 301 such as active carbon is arranged in the absorption chamber 30; the gas that the blast pipe was derived passes spray chamber 20 and passes through the ammonia molecule in the shower 201 spun water smoke with gas, realizes deodorant purpose, and the gas that passes spray chamber 20 gets into in the absorption chamber 30 further adsorbs the processing through adsorbing material 301 to the gas after removing ammonia, ensures that the gas of finally arranging outward is odorless and basically pollution-free.
However, because the humidity of the gas passing through the spraying chamber is high, the gas with high humidity entering the absorption chamber can affect the adsorption effect of the absorbent on harmful or odorous gas in the gas, and further affect the deodorization effect of the whole fermentation tank in the using process.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a fecal sewage fermentation tank, which solves the problem that a gas deodorization unit arranged in the fermentation tank in the prior art has an unsatisfactory effect on the treatment of harmful gases generated in the fermentation process.
In order to realize the purpose, the utility model adopts the following technical scheme: a fecal sewage fermentation tank comprises a tank body for fecal sewage fermentation and a gas treatment unit communicated with the tank body and used for treating waste gas, wherein the gas treatment unit comprises a spray chamber, a drying chamber and an absorption chamber which are sequentially connected through a pipeline, the spray chamber is communicated with the tank body, and the absorption chamber is communicated with the outside;
wherein, be equipped with in the spray booth and be used for spraying deodorant mechanism that sprays to gas, be equipped with in the drying chamber and carry out dry drier layer to gas, be equipped with in the absorption chamber and carry out absorbent adsorbent layer to gas.
The principle of the utility model is as follows: the waste gas that fermentation process produced in the cell body passes through air guide equipment such as exhaust fan and derives and get into the spray chamber, get into the waste gas in the spray chamber and carry out the water adsorption through the ammonia that sprays the mechanism in to waste gas earlier and handle, most stink gas is detached, the gaseous drier layer that gets into the dry chamber and pass in the dry chamber again after the spray chamber in handling, the drier layer is used for the waste gas drying of deriving the spray chamber, the gaseous reentrant adsorption chamber after the drying, the gaseous adsorption treatment that further carries out of adsorption chamber through the adsorbed material layer that gets into, the gaseous external row again after the processing.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the structure of the gas treatment unit is improved, the drying chamber is arranged between the spray chamber and the absorption chamber, and the waste gas after spray treatment can be dried and then enters the absorption chamber for treatment, so that the influence of high humidity in the gas on the adsorption effect of the adsorption material layer is avoided, the waste gas treatment effect of the gas treatment unit on the use process of the fermentation tank is further ensured, and the gas treatment unit can be used in scenes with high requirements.
Drawings
FIG. 1 is a schematic view of a fermentation tank according to the prior art;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a top view of the container and cartridge of the present invention.
In the figure: 1. a tank body; 11. a feed pipe; 12. a blow-off pipe; 13. a first exhaust fan; 14. an air inlet pipe; 2. a spray chamber; 21. a shower pipe; 22. a spray head; 23. a liquid discharge pipe; 24. a water storage chamber; 25. a water inlet pump; 26. a water inlet pipe; 27. an air duct; 271. a first valve; 28. a second exhaust fan; 3. a drying chamber; 31. a box body; 32. a box cover; 33. a desiccant layer; 34. an air outlet pipe; 341. a fourth valve; 35. a heat exchanger; 36. a blower; 37. a hot gas pipe; 371. a third valve; 38. an exhaust pipe; 381. a second valve; 4. an absorption chamber; 40. a layer of adsorbent material; 41. a Chinese herbal medicine medium adsorption layer; 42. a hydrophobic crystalline silica molecular sieve adsorption layer; 43. an activated carbon adsorption layer; 44. an air outlet pipe; 331. a barrel; 311. and a guide slide block.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 2, an embodiment of the present invention provides a fecal sewage fermentation tank, including a tank body 1 for fecal sewage fermentation and a gas treatment unit communicated with the tank body 1 for treating waste gas, wherein the tank body 1 is provided with a feeding pipe 11 and a sewage discharge pipe 12, and a stirring device, a temperature control unit, a humidity control unit, etc. may be further disposed in the tank body 1 according to the use requirements.
As shown in fig. 2, the gas treatment unit includes a spray chamber 2, a drying chamber 3 and an absorption chamber 4, the lower middle part of the spray chamber 2 is communicated with the tank body 1 through an air inlet pipe 14, the upper middle part of the spray pipe 21 is communicated with the drying chamber 3 through an air duct 27, the drying chamber 3 is communicated with the absorption chamber 4 through an air outlet pipe 38, and the absorption chamber 4 is externally communicated through an air outlet pipe 44. The air inlet pipe 14 is provided with a first exhaust fan 13, the air guide pipe 27 is provided with a second exhaust fan 28, so that waste gas can be guided out of the tank body 1 and sequentially passes through the spray chamber 2, the drying chamber 3 and the absorption chamber 4.
As shown in fig. 2, the spray chamber 2 is mainly used for spraying waste gas during fermentation, so a spray mechanism for spraying and deodorizing gas is arranged in the spray chamber 2, the spray mechanism comprises a spray pipe 21, a water inlet pipe 26 communicated with the spray pipe 21, and a water storage chamber 24 communicated with the water inlet pipe 26, the spray pipe 21 is located below the air inlet end of the air guide pipe 27 and is arranged close to the air inlet end of the air guide pipe 27, a plurality of spray heads 22 are arranged on the spray pipe 21, and a water inlet pump 25 is arranged on the water inlet pipe 26. The inlet pipe 26 runs through the side wall of the spray chamber 2, the inlet pump 25 is arranged outside the spray chamber 2, and the water storage chamber 24 is used for setting sufficient spray water or weak acid liquid. When the device is used, the water inlet pump 25 works to guide the spraying liquid in the water storage chamber 24 into the water inlet pipe 26 and then the spraying liquid is guided out from the plurality of spray heads 22 on the spraying pipe 21, the spraying liquid and the gas entering the spraying chamber 2 are in countercurrent flow to absorb ammonia in the gas, and the gas after absorbing the ammonia enters the drying chamber 3 from the gas guide pipe 27. The spray liquid that absorbs the ammonia concentrates on the bottom in spray chamber 2, derives from fluid-discharge tube 23 that spray chamber 2 bottoms set up, and the waste water of deriving can get into the sewage treatment plant of plant, also can directly arrange outward when concentration is lower.
As shown in fig. 2 and 3, the gas introduced into the drying chamber 3 through the gas guide tube 27 is dried by the desiccant bed 33 provided in the drying chamber 3. The drying chamber 3 comprises a box body 31 with an opening at the upper end and a box cover 32 detachably connected with the opening end of the box body 31, the drying agent layer 33 comprises a cylinder body 331 with a net structure and a drying agent arranged in the cylinder body 331, the cylinder body 331 is embedded in the box body 31 and the inner wall of the box body 31 is attached, the drying agent is dry silica gel which can be repeatedly used and is not easy to agglomerate or crush after absorbing water. A preset amount of silica gel particles are filled into the cylinder 331 and are properly vibrated and tamped, so that gaps among the silica gel particles are reduced; after the cylindrical body 331 containing silica gel particles is embedded in the box body 31, the outer wall of the cylindrical body 331 is provided with the guide slide block 311, the inner wall of the box body 31 is provided with the slide groove matched with the guide slide block 311, so that the cylindrical body 331 containing silica gel particles is embedded in the box body 31 conveniently, and after the cylindrical body 331 is installed, the box cover 32 is connected with the box body 31 in a sealing way through bolts or other connection modes. In the method in which the inlet end of the exhaust pipe 38 is disposed below the desiccant bed 33 and the outlet end of the air guide tube 27 is disposed below the desiccant bed 33, the gas introduced into the drying chamber 3 from the air guide tube 27 passes through the desiccant bed 33 and is dried by silica gel particles. The dried gas enters the absorption chamber 4 through the exhaust pipe 38.
As shown in fig. 2, an adsorption material layer 40 for adsorbing gas is provided in the adsorption chamber 4. The absorption chamber 4 is provided with an air outlet pipe 44 opposite to the exhaust pipe 38, and the adsorption material layer 40 is arranged between the air outlet pipe 34 and the air outlet pipe 44 and comprises an activated carbon adsorption layer 43, a hydrophobic crystalline silica molecular sieve adsorption layer 42 and a Chinese herbal medicine medium adsorption layer 41 which are sequentially arranged according to the air flow direction. The adsorption material layer 40 adopts multi-stage adsorption sterilization, so that the quality of the discharged air is ensured, the culture environment is protected, and the gas treatment unit can be used in scenes with higher requirements.
As shown in fig. 2, after the silica gel particles in the drying chamber 3 are used for a period of time, the water absorption amount is saturated and the silica gel particles are not absorbed, and the fermentation process is not continuously deflated, in the process, the silica gel particles can be dried after being used for a period of time, namely, the drying agent regeneration process, so the utility model further comprises a regeneration unit, the regeneration unit comprises a heat exchanger 35 and a blower 36 which are arranged in a communicating manner, a first valve 271 arranged on the air duct 27 and a second valve 381 arranged on the exhaust pipe 38, the heat exchanger 35 is communicated with the drying chamber 3 through a hot air pipe 37 with a third valve 371, the drying chamber 3 is provided with an air outlet pipe 34 which is matched with the hot air pipe and is provided with a fourth valve 341, and the drying agent layer 33 is positioned between the air outlet end of the hot air pipe and the air inlet end of the air outlet pipe 34. The first valve 271, the second valve 381, the third valve 371, and the fourth valve 341 may be manual valves or electromagnetic valves, and if the four valves are manual valves, the start and stop of the four valves, the fan, and the heat exchanger 35 are manually controlled; if the four valves are electromagnetic valves, the start and stop of the four valves, the heat exchanger 35 and the fan can be controlled by a PLC control unit (single chip microcomputer). When the drying chamber 3 is used for drying, the fan, the heat exchanger 35, the third valve 371 and the fourth valve 341 are closed, the first valve 271 and the second valve 381 are opened, and the drying chamber 3 is used for drying gas; when the drying agent in the drying chamber 3 is regenerated, the fan, the heat exchanger 35, the third valve 371, and the fourth valve 341 are opened, the first valve 271 and the second valve 381 are closed, the fan operates to guide the external air cylinder conduit into the heat exchanger 35, the heat exchanger 35 may be an electric heater, an air heater, a liquid heater, or the like, and is used for heating the air guided by the fan, the heated air is guided into the drying chamber 3 to dry the drying agent in the drying chamber 3, and the dried air is guided out from the air outlet pipe 34, so that the drying agent is regenerated, and the drying agent can be used next time.
According to the utility model, the structure of the gas treatment unit is improved, the drying chamber 3 is arranged between the spray chamber 2 and the absorption chamber 4, and the waste gas after spray treatment can be dried and then enters the absorption chamber 4 for treatment, so that the adsorption effect of the adsorption material layer 40 is prevented from being influenced by high humidity in the gas, the waste gas treatment effect of the gas treatment unit on the fermentation tank in the use process is ensured, and the gas treatment unit can be used in a scene with high requirements.
In the explanation of the present invention, it should be noted that the terms "first", "second", "third", "fourth", "upper", "lower", and the like are only used for convenience of description and understanding, and do not limit the application of technical features, nor imply the importance of different technical features.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. The utility model provides a dirty fermentation vat of excrement, is used for the dirty fermented cell body of excrement and communicates with each other with the cell body and be used for handling the gaseous processing unit of waste gas, its characterized in that: the gas treatment unit comprises a spray chamber, a drying chamber and an absorption chamber which are sequentially connected through pipelines, the spray chamber is communicated with the tank body, and the absorption chamber is communicated with the outside;
wherein, be equipped with in the spray booth and be used for spraying deodorant mechanism that sprays to gas, be equipped with in the drying chamber and carry out dry drier layer to gas, be equipped with in the absorption chamber and carry out absorbent adsorbent layer to gas.
2. A fecal sewage fermentation tank according to claim 1 characterized in that: a liquid discharge pipe is arranged at the bottom of the spray chamber, an air inlet pipe communicated with the tank body is arranged at the middle lower part of the spray chamber, and an air guide pipe communicated with the drying chamber is arranged at the middle upper part of the spray chamber;
the spraying mechanism comprises a spraying pipe, an inlet pipe and a water storage chamber, the inlet pipe is communicated with the spraying pipe, the water storage chamber is communicated with the inlet pipe, the spraying pipe is arranged below the air inlet end of the air guide pipe and close to the air inlet end of the air guide pipe, a plurality of spray heads are arranged on the spraying pipe, and a water inlet pump is arranged on the inlet pipe.
3. A fecal sewage fermentation tank according to claim 2 characterized in that: the drying chamber comprises a box body with an opening at the upper end and a box cover detachably connected with the opening end of the box body,
the drying agent layer comprises a cylinder body with a net structure and a drying agent arranged in the cylinder body, the cylinder body is embedded in the box body and is attached to the inner wall of the box body,
the drying chamber is arranged above the drying agent layer and communicated with the air duct, and the drying chamber is arranged below the drying agent layer and communicated with the absorption chamber through the exhaust pipe.
4. A fecal sewage fermentation tank according to claim 3 characterized in that: also comprises a regeneration unit which is used for regenerating the air conditioner,
the regeneration unit comprises a heat exchanger and an air blower which are communicated, a first valve arranged on the air guide pipe and a second valve arranged on the exhaust pipe, the heat exchanger is communicated with the drying chamber through a hot air pipe with a third valve, the drying chamber is provided with an air outlet pipe which is matched with the hot air pipe and is provided with a fourth valve, and the drying agent layer is positioned between the air outlet end of the hot air pipe and the air inlet end of the air outlet pipe.
5. A fecal sewage fermentation tank according to claim 3 characterized in that: the absorption chamber is provided with an air outlet pipe opposite to the exhaust pipe, and the adsorption material layer is arranged between the air outlet pipe and comprises an activated carbon adsorption layer, a hydrophobic crystalline silicon dioxide molecular sieve adsorption layer and a Chinese herbal medicine medium adsorption layer which are sequentially arranged according to the air flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220315586.0U CN216778418U (en) | 2022-02-16 | 2022-02-16 | Dirty fermentation vat of excrement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220315586.0U CN216778418U (en) | 2022-02-16 | 2022-02-16 | Dirty fermentation vat of excrement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216778418U true CN216778418U (en) | 2022-06-21 |
Family
ID=82017966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220315586.0U Expired - Fee Related CN216778418U (en) | 2022-02-16 | 2022-02-16 | Dirty fermentation vat of excrement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216778418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115282756A (en) * | 2022-08-17 | 2022-11-04 | 安徽科技学院 | Gaseous high-efficient circulation ammonia removal device in airtight meat products fermentation workshop |
-
2022
- 2022-02-16 CN CN202220315586.0U patent/CN216778418U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115282756A (en) * | 2022-08-17 | 2022-11-04 | 安徽科技学院 | Gaseous high-efficient circulation ammonia removal device in airtight meat products fermentation workshop |
| CN115282756B (en) * | 2022-08-17 | 2023-12-12 | 安徽科技学院 | Efficient circulating ammonia removal device for gas in sealed meat product fermentation workshop |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220621 |