CN212357237U - Continuous dry anaerobic fermentation system - Google Patents
Continuous dry anaerobic fermentation system Download PDFInfo
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- CN212357237U CN212357237U CN202020791132.1U CN202020791132U CN212357237U CN 212357237 U CN212357237 U CN 212357237U CN 202020791132 U CN202020791132 U CN 202020791132U CN 212357237 U CN212357237 U CN 212357237U
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Abstract
The utility model is suitable for an anaerobic fermentation equipment technical field provides a continuous dry process anaerobic fermentation system, including feeding module, dry process anaerobic reaction module and ejection of compact module, feeding and ejection of compact module all are the hollow tube connection of adopting between two sections spirals, remain the take altitude material at any time in the hollow tube, reach can the continuous type feeding, can seal the requirement such as again, realize airtight continuous type ejection of compact. The utility model discloses the device utilizes the characteristic that dry process fermentation material moisture content is about 60% ~ 80%, cooperatees with the special design in the business turn over material module to realize that the (dry process) continuous type business turn over material and the synchronous sealed requirement of high solid rate discarded object contain, realize dry process anaerobic fermentation system steady operation, reduce the fault rate, increase substantially the volume gas production rate of dry process anaerobic module, improve a large amount of material throughput, reduction in production cost.
Description
Technical Field
The utility model belongs to the technical field of organic waste anaerobic fermentation equipment, especially, relate to a continuous dry process anaerobic fermentation.
Background
The anaerobic fermentation technology can reduce and harmlessly convert wastes such as straws, excrement, sludge and the like into clean energy and organic fertilizer raw materials, is one of common technologies for resource utilization of agricultural wastes, and is divided into wet anaerobic fermentation and dry anaerobic fermentation (called dry fermentation for short) according to the content of Total Solids (TS). The dry fermentation refers to an anaerobic fermentation treatment technology with the mass fraction of TS being 20-40%, and the corresponding water content is about 60-80%. Compared with the wet fermentation technology, the dry fermentation technology has high volumetric gas production rate; the occupied area is small; the operation process is stable, and the problems of scum, precipitation and the like in a wet process are avoided; the water demand is low or no water is needed, so that water resources are saved; less biogas slurry is generated, the water content of waste residue is low, the subsequent treatment cost is low, and the like, and the method is more and more favored by the market. The application of patents such as domestic existing dry anaerobic fermentation equipment, patent CN 102242052B disclose a horizontal baffling formula dry anaerobic fermentation reaction unit, patent CN 206768095U the utility model discloses a garage formula anaerobic fermentation reactor, patent CN 209816130U the utility model provides a patent such as agitator for dry anaerobic fermentation has carried out the research from aspects such as fermentation cylinder structure, (mixing) shaft design respectively, mainly is batch formula business turn over material use. However, the current research on dry anaerobic fermentation engineering with high solid content finds that batch dry fermentation and continuous production of waste are contradictory and can not meet the requirements; the closed environment in the reactor is easily damaged in the continuous feeding and discharging process, so that the fermentation fails; the continuous dry anaerobic fermentation compound material with high solid content has poor fluidity and difficult feeding and discharging.
Therefore, how to solve the difficulty of continuous dry anaerobic fermentation in the practical process is a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a continuous dry process anaerobic fermentation system structurally adopts segmentation business turn over material, hollow tube to connect, and the certain material that contains the solid rate of collocation realizes the continuous business turn over material of the high solid rate discarded object of containing, and synchronous sealing does not destroy the sealed environment of reactor, realizes that the reactor produces gas continuous, stable, the efficient goes on.
The utility model discloses a realize through following technical scheme:
can carry out the continuous fermentation of anaerobism, it is convenient to business turn over material, and is sealed effectual, and process convenient operation need not carry out the operation of frequent oxygen removal to the anaerobic fermentation jar, and the material is in transmission process, also can look over the encapsulated situation of material passageway, also can calculate fermentation process parameters according to the material condition of hollow tube.
The utility model is realized in such a way, a continuous dry anaerobic fermentation system comprises a first feeding screw, a first hollow pipe, a second feeding screw, a dry anaerobic reaction module, a first material conveying screw, a second hollow pipe and a second material conveying screw;
the first feeding screw comprises a first feeding cylinder, a first feeding shaft and a feeding hopper, the first feeding shaft is arranged in the first feeding cylinder, the first feeding shaft and the first feeding cylinder are coaxially arranged, the top of one end of the first feeding cylinder is provided with one feeding hopper, and the bottom of the other end of the first feeding cylinder is provided with a first hollow pipe which is vertically arranged;
the second feeding screw comprises a second feeding cylinder and a second feeding shaft, the top of one end of the second feeding cylinder is provided with a feeding hole, the feeding hole is communicated with the first feeding cylinder through the first hollow pipe, the second feeding shaft is installed inside the second feeding cylinder, the second feeding shaft and the second feeding cylinder are coaxially arranged, and the lower surface of the upper end of the second feeding cylinder is provided with a discharging hole;
the dry anaerobic reaction module comprises an anaerobic fermentation tank and an anaerobic tank discharge pipe, the top of the anaerobic fermentation tank is connected with the discharge hole of the second feed cylinder, and the bottom of the anaerobic fermentation tank is connected with the anaerobic tank discharge pipe;
the first material conveying screw comprises a first material conveying cylinder and a first material conveying shaft, the first material conveying cylinder is arranged in an inclined mode, a feed inlet is formed in the upper surface of the lower end of the first material conveying cylinder and is communicated with a discharge pipe of the anaerobic tank through the discharge pipe of the anaerobic tank, the first material conveying shaft is installed inside the first material conveying cylinder, the first material conveying shaft and the first material conveying cylinder are arranged coaxially, the upper end of the lower surface of the first material conveying cylinder is connected with a second hollow pipe, the second hollow pipe is arranged vertically, and a pressure release valve is installed on the anaerobic fermentation tank;
the second feeding screw comprises a second feeding cylinder and a second feeding shaft, the second feeding cylinder is arranged in a tilted mode, a feeding hole is formed in the upper surface of the lower end of the second feeding cylinder, the feeding hole is communicated with the first feeding cylinder through a second hollow pipe, the second feeding shaft is installed in the second feeding cylinder, the second feeding shaft and the second feeding cylinder are coaxially arranged, and the lower surface of the upper end of the second feeding cylinder is provided with a discharging hole.
Preferably, one end of the first feeding shaft, one end of the second feeding shaft, one end of the first material conveying shaft and one end of the second material conveying shaft are fixedly connected with the output end of a driving motor respectively.
Preferably, a stirring shaft is installed in the anaerobic fermentation tank, one end of the stirring shaft extends out of the top of the anaerobic fermentation tank and is fixedly connected with the output end of a stirring motor, and a helical blade is fixed on the outer wall of the stirring shaft.
Preferably, the first hollow tube and the second hollow tube are both made of transparent toughened glass materials.
Preferably, the anaerobic fermentation tank is communicated with the discharge hole of the second feeding cylinder through an anaerobic tank feeding pipe.
Preferably, the first hollow tube and the second hollow tube are provided with height scales.
Preferably, the first hollow pipe and the second hollow pipe are both provided with bin wall vibrators.
Preferably, the first hollow pipe, the first feeding cylinder and the second feeding cylinder are connected in a welded manner, the second hollow pipe, the first feeding cylinder and the second feeding cylinder can also be connected through bolts, sealing gaskets are arranged at the joints to achieve a sealing effect, the first hollow pipe or the second hollow pipe can be spliced in sections, so that the length of the hollow pipe can be adjusted flexibly through the splicing in sections, and the use of different processes and the installation and construction of various scenes are facilitated.
Preferably, the anaerobic tank feed pipe is provided with a squeeze opening structure.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a continuous dry process anaerobic fermentation system, through setting up the anaerobic fermentation jar by the spiral feeding section of thick bamboo input material of two slopes, feeding and ejection of compact module all are that the hollow tube that adopts between two sections spirals connects, remain the take the altitude material at any time in the hollow tube, reach can continuous type feeding, can seal the requirement such as again, realize airtight continuous type ejection of compact. The utility model discloses the device utilizes the characteristic of fermentation material moisture content about 65% ~ 88%, cooperatees with the special design in the business turn over material module to realize that the (dry process) continuous type business turn over material and the synchronous sealed requirement of high solid content discarded object realizes dry process anaerobic fermentation system steady operation, reduces the fault rate, increases substantially the volume gas production rate of dry process anaerobism module, improves a large amount of material handling capacity, reduction in production cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a continuous dry anaerobic fermentation system of the present invention;
FIG. 2 is an enlarged view of detail A in FIG. 1;
fig. 3 is a detail enlarged schematic diagram at B of bitmap 1.
In the figure: 1 first feeding spiral, 2 second feeding spiral, 3 dry anaerobic reaction module, 4 first feeding spiral, 5 second feeding spiral, 6 feed hopper, 7 first feeding cylinder, 8 first feeding shaft, first hollow tube, 10 second feeding cylinder, 11 second feeding shaft, 12 anaerobic jar inlet pipe, 13 agitator motor, 14 anaerobic fermentation tank, 15 helical blade, 16 anaerobic jar discharging pipe, 17 first feeding cylinder, 18 first feeding shaft, 19 second hollow tube, 20 second feeding cylinder, 21 second feeding shaft, 22 relief valve, 23 bulkhead vibrator, 24 bolt, 25 sealing washer, 26 rubber ring, 27 air cock.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: a continuous dry anaerobic fermentation system comprises a first feeding screw 1, a second feeding screw 2, a dry anaerobic reaction module 3, a first material conveying screw 4 and a second material conveying screw 5.
First feeding spiral 1 includes first feeding cylinder 7, first feeding axle 8, feeder hopper 6 and first hollow tube 9, and first feeding axle 8 is installed inside first feeding cylinder 7, and first feeding axle 8 is coaxial setting with first feeding cylinder 7, and the top of the one end of first feeding cylinder 7 is provided with a feeder hopper 6, and the bottom of the other end of first feeding cylinder 7 is provided with a first hollow tube 9 of perpendicular setting.
The second feeding screw 2 comprises a second feeding cylinder 10 and a second feeding shaft 11, a feeding hole is formed in the top of one end of the second feeding cylinder 10, the feeding hole is communicated with the first feeding cylinder 7 through a first hollow pipe 9, the second feeding shaft 11 is installed inside the second feeding cylinder 10, the second feeding shaft 11 and the second feeding cylinder 10 are coaxially arranged, and a discharging hole is formed in the lower surface of the upper end of the second feeding cylinder.
The dry anaerobic reaction module 3 comprises an anaerobic fermentation tank 14 and an anaerobic tank discharge pipe 16, the top of the anaerobic fermentation tank 14 is connected with the discharge hole of the second feed cylinder 10, and the bottom of the anaerobic fermentation tank 14 is connected with an anaerobic tank discharge pipe 16.
First defeated material spiral 4 includes first feed cylinder 17, first defeated material axle 18 and second hollow tube 19, first feed cylinder 17 is the slope setting, the upper surface of the lower extreme of first feed cylinder 17 has a feed inlet, the feed inlet passes through anaerobic jar discharging pipe 16 intercommunication anaerobic fermentation jar 14, first defeated material axle 18 is installed inside first feed cylinder 17, first defeated material axle 18 is coaxial setting with first feed cylinder 17, the upper end of the lower surface of first feed cylinder 17 is connected with a second hollow tube 19, second hollow tube 19 is the perpendicular setting, anaerobic fermentation jar 14 installs a relief valve 22.
The second feeding screw 5 comprises a second feeding cylinder 20 and a second feeding shaft 21, the second feeding cylinder 20 is arranged obliquely, a feeding hole is formed in the upper surface of the lower end of the second feeding cylinder 20 and communicated with the first feeding cylinder 17 through a second hollow tube 19, the second feeding shaft 21 is installed in the second feeding cylinder 20, the second feeding shaft 21 and the second feeding cylinder 20 are coaxially arranged, and a discharging hole is formed in the lower surface of the upper end of the second feeding cylinder 20.
In the present embodiment, the first and second feeders 7 and 10 are disposed obliquely, and the second feeder 10 is located below the first feeder 7. The first hollow tube 9 and the second hollow tube 19 are both vertically arranged. The two ends of the first hollow pipe 9 are connected with the first feeding cylinder 7 and the second feeding cylinder 10 through flanges. The second hollow tube 19 is connected at both ends thereof to the first feed cylinder 17 and the second feed cylinder 20 by flanges. The feed hopper 6 is used for a user to input materials to be fermented, the materials enter the first feed cylinder 7, the first feed shaft 8 conveys the materials in the first hollow pipe 9 when rotating and then enters the second feed cylinder 10, the second feed shaft 11 conveys the materials in the anaerobic fermentation tank 14 when rotating, after the materials are subjected to anaerobic fermentation in the anaerobic fermentation tank 14, the materials are conveyed to the second hollow pipe 19 from the first feed cylinder 17 through the first feed shaft 18, the materials in the second hollow pipe 19 flow into the second feed cylinder 20, and the materials are conveyed to other butt-jointed equipment when the second feed shaft 21 rotates. The materials in the first hollow pipe 9, the anaerobic fermentation tank 14 and the second hollow pipe 19 can seal the feeding and discharging ports of the second feeding cylinder 10, the first feeding cylinder 17 and the second feeding cylinder 20, and prevent air circulation. In other embodiments, the first feeding screw 1, the second feeding screw 2, the first transporting screw 4 and the second transporting screw 5 may adopt other types of conveying devices. And a material level measuring instrument for detecting the height of the material can be arranged on the top wall in the anaerobic fermentation tank 14, so that a user can conveniently obtain the height of the material in the anaerobic fermentation tank 14 in real time. In other embodiments, 1-2 observation windows can be provided on the anaerobic fermentation tank 14 for users to observe the material height.
Further, one end of the first feeding shaft 8, one end of the second feeding shaft 11, one end of the first feeding shaft 18 and one end of the second feeding shaft 21 are fixedly connected to an output end of a driving motor, respectively.
In this embodiment, a driving motor is installed at the end of each of the first feeding cylinder 7, the second feeding cylinder 10, the first feeding cylinder 17 and the second feeding cylinder 20, and is used for driving the first feeding shaft 8, the second feeding shaft 11, the first feeding shaft 18 and the second feeding shaft 21 to rotate, and the driving motor is connected with an external power supply.
Furthermore, a stirring shaft is installed in the anaerobic fermentation tank 14, one end of the stirring shaft extends out of the top of the anaerobic fermentation tank 14 and is fixedly connected with the output end of a stirring motor 13, and a helical blade 15 is fixed on the outer wall of the stirring shaft.
In this embodiment, the stirring motor 13 is used for driving the stirring shaft to rotate, the stirring shaft stirs the materials in the anaerobic fermentation tank 14 through the helical blades 15 so as to improve the fermentation effect, and the stirring motor 13 is connected with an external power supply.
Further, the first hollow tube 9 and the second hollow tube 19 are both made of transparent tempered glass material.
In the embodiment, the first hollow tube 9 and the second hollow tube 19 made of the tempered glass material have stable structures and good light transmission effect, so that a user can conveniently observe the material state.
Further, the anaerobic fermentation tank 14 is communicated with the discharge port of the second feeding cylinder 10 through an anaerobic tank feeding pipe 12, and the material can enter the anaerobic fermentation tank 14 through the anaerobic tank feeding pipe 12.
Furthermore, the first hollow tube 9 and the second hollow tube 19 are provided with height scales, so that an operator can conveniently observe the height of the materials in the hollow tubes, the process optimization and research are facilitated, and other various automatic height detection devices, such as an infrared height detection device and the like, can be installed.
Furthermore, the first hollow tube 9 and the second hollow tube 19 are both provided with a bin wall vibrator 23, the bin wall vibrator 23 is an energy-saving universal product taking a vibration motor as an excitation source, and the phenomena of bridging, arching, blocking and the like caused by internal friction, deliquescence, electrification, composition segregation and the like are effectively eliminated by high-frequency vibration and impact force, so that materials are smoothly discharged from a bin opening, and one of necessary devices for stable feeding is ensured. The bin vibrator 23 is used here to make the solid or semi-solid raw material not easy to hang on the wall and to improve the density of the settled material and the air tightness.
Furthermore, the first hollow tube 9, the first feeding cylinder 7 and the second feeding cylinder 10, the second hollow tube 19, the first feeding cylinder 17 and the second feeding cylinder 20 can be welded and fixed together, and can also be connected through bolts 24, a sealing washer 25 is installed at the joint to play a sealing role, the first hollow tube 9 or the second hollow tube 19 can be spliced in sections, so that the length of the hollow tube can be adjusted more flexibly through the splicing in sections, and the use of different processes and the installation and construction of various scenes are facilitated.
Further, the anaerobic tank feed pipe 12 is provided with a squeeze-open structure. The squeeze-open configuration may increase the density of the material in the second feed screw 2, thereby improving the overall gas tightness.
Further, the squeezing opening structure is a rubber ring 26, the outer side of the rubber ring 26 is fixed on the inner wall of the anaerobic tank feeding pipe 12, the inner side of the rubber ring 26 is squeezed together when no material passes through, a closed state is formed, when the material passes through, the material is squeezed out because the pressure is spread by the material, and therefore the whole air tightness is improved, and gas in the anaerobic fermentation tank 14 is prevented from flowing backwards into the second feeding cylinder 10.
Further, the rubber ring 26 is hollow and is provided with an air tap 27, so that the discharge pressure in the anaerobic tank feeding pipe 12 can be adjusted by inflating the air tap 27 of the rubber ring 26, and the process optimization in the aspect of air tightness of solid or semi-solid raw materials with different densities is facilitated.
The utility model discloses a theory of operation and use flow: the utility model discloses the installation is good after, carries out the preliminary treatment of raw materials earlier, makes its fermentation material moisture content reach about 60% ~ 80%. The user will wait that the fermented material drops into feeder hopper 6, the material gets into first feed cylinder 7, first feed shaft 8 is rotatory in the first hollow tube 9 with the material conveying, then get into second feed cylinder 10, second feed shaft 11 is rotatory in conveying the material to anaerobic fermentation jar 14, the material carries out anaerobic fermentation back in anaerobic fermentation jar 14, carry the second hollow tube 19 with the material from first feed cylinder 17 through first feed shaft 18, the material in the second hollow tube 19 flows into second feed cylinder 20, when second feed shaft 21 is rotatory, carry the material in the device that needs the processing on next step. The utility model provides a fermentation system can carry out the continuous fermentation of anaerobism, it is convenient to input and output, the material is in transmission process, also can look over whether there is the material through first hollow tube 9 and second hollow tube 19, with confirm whether be in encapsulated situation, then decide whether start subsequent defeated material passageway, also can be through the required parameter of the supplementary calculation process flow of data that obtains, material through in first hollow tube 9 and the second hollow tube 19 provides sealed function, reduce material pollution, relief valve 22 can carry out the pressure release when anaerobic fermentation tank 14's atmospheric pressure is too high, the device operation is safer.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A continuous dry anaerobic fermentation system is characterized in that: comprises a feeding module, a dry anaerobic reaction module and a discharging module;
the feed module comprises a first feed screw, a first hollow tube, and a second feed screw;
the first feeding screw is arranged inside a first feeding cylinder through a first feeding shaft, the first feeding shaft and the first feeding cylinder are coaxially arranged, a feeding hopper is arranged at the top of one end of the first feeding cylinder, and the bottom of the other end of the first feeding cylinder is connected with a first hollow pipe which is vertically arranged;
the second feeding screw comprises a second feeding cylinder and a second feeding shaft, a feeding hole is formed in the top of one end of the second feeding cylinder, the feeding hole is communicated with the first feeding cylinder through the first hollow pipe, the second feeding shaft is installed inside the second feeding cylinder, the second feeding shaft and the second feeding cylinder are coaxially arranged, and a discharging hole is formed in the lower surface of the upper end of the second feeding cylinder;
the dry anaerobic reaction module comprises an anaerobic fermentation tank and an anaerobic tank discharge pipe, the top of the anaerobic fermentation tank is connected with the discharge hole of the second feed cylinder, and the bottom of the anaerobic fermentation tank is connected with the anaerobic tank discharge pipe;
the discharging module comprises a first material conveying spiral, a second hollow pipe and a second material conveying spiral;
the first material conveying screw comprises a first material conveying cylinder and a first material conveying shaft, a material inlet is formed in the upper surface of the lower end of the first material conveying cylinder, the material inlet is communicated with a material outlet pipe of the anaerobic tank through a material outlet pipe of the anaerobic tank, the first material conveying shaft is installed inside the first material conveying cylinder, the first material conveying shaft and the first material conveying cylinder are coaxially arranged, and the upper end of the lower surface of the first material conveying cylinder is connected with a second hollow pipe which is vertically arranged;
a pressure release valve is arranged on the anaerobic fermentation tank;
the second material conveying screw comprises a second material conveying cylinder and a second material conveying shaft, a material inlet is formed in the upper surface of the lower end of the second material conveying cylinder, the material inlet is communicated with the first material conveying cylinder through the second hollow pipe, the second material conveying shaft is installed in the second material conveying cylinder, and the second material conveying shaft and the second material conveying cylinder are coaxially arranged;
the lower surface of the upper end of the second material conveying cylinder is provided with a material outlet.
2. A continuous dry anaerobic fermentation system according to claim 1, wherein: one end of the first feeding shaft, one end of the second feeding shaft, one end of the first material conveying shaft and one end of the second material conveying shaft are fixedly connected with the output end of a driving motor respectively.
3. A continuous dry anaerobic fermentation system according to claim 1, wherein: install a (mixing) shaft in the anaerobic fermentation jar, the one end of (mixing) shaft is followed anaerobic fermentation jar's top stretches out and fixed connection a agitator motor's output, be fixed with helical blade on the outer wall of (mixing) shaft.
4. A continuous dry anaerobic fermentation system according to claim 1, wherein: the first hollow tube and the second hollow tube are both made of transparent toughened glass materials.
5. A continuous dry anaerobic fermentation system according to claim 1, wherein: the anaerobic fermentation tank is communicated with the discharge hole of the second feeding cylinder through an anaerobic tank feeding pipe.
6. A continuous dry anaerobic fermentation system according to claim 4, wherein: the first hollow pipe and the second hollow pipe are provided with height scales.
7. A continuous dry anaerobic fermentation system according to claim 4, wherein: the first hollow pipe and the second hollow pipe are both provided with bin wall vibrators.
8. A continuous dry anaerobic fermentation system according to claim 5, wherein: the anaerobic jar inlet pipe is equipped with the extrusion structure of opening.
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| CN202020791132.1U CN212357237U (en) | 2020-05-13 | 2020-05-13 | Continuous dry anaerobic fermentation system |
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| CN202020791132.1U CN212357237U (en) | 2020-05-13 | 2020-05-13 | Continuous dry anaerobic fermentation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363670A (en) * | 2020-05-13 | 2020-07-03 | 中国热带农业科学院农业机械研究所 | Continuous dry anaerobic fermentation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363670A (en) * | 2020-05-13 | 2020-07-03 | 中国热带农业科学院农业机械研究所 | Continuous dry anaerobic fermentation system |
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