CN111363669A - A continuous dry anaerobic-aerobic two-stage coupled fermentation system - Google Patents

Abstract

The invention is suitable for the field of organic waste resource utilization equipment, and provides a continuous dry anaerobic-aerobic two-stage coupled fermentation system, including a feeding module, a dry anaerobic reaction module, a discharging module and an aerobic reaction module. The reaction module, the feeding and discharging modules are all connected by a combination of two sections of spirals and a hollow tube. A certain high degree of fermentation material is kept in the hollow tube at any time. The discharging module connects the anaerobic reaction module and the aerobic reaction module in series. The bipolar coupled fermentation system of the present invention is applicable to the fermentation material with a solid content of 20-40%, and is matched with the design of the hollow tube to realize the (dry method) continuous feeding and discharging of agricultural wastes with a high solid content. , but also dynamic sealing and other requirements. The series connection of the anaerobic reaction module and the aerobic reaction module not only ensures the sealed continuous discharge function of the anaerobic fermentation module, but also completes the continuous feeding of aerobic fermentation, so that the bipolar fermentation can be dynamically adjusted according to the requirements of gas and fertilizer products. function of the process.

Description

A continuous dry anaerobic-aerobic two-stage coupled fermentation system

technical field

The invention belongs to the field of organic waste resource utilization equipment, in particular to a continuous dry anaerobic-aerobic two-stage coupled fermentation system.

Background technique

In recent years, with the continuous development of the planting and breeding industry, the output of straw and livestock and poultry manure has increased year by year. Due to the limitations of single technology and lack of equipment, most agricultural wastes have not been well treated and utilized, resulting in serious problems. The problems of environmental pollution and natural ecological deterioration have become increasingly prominent.

Anaerobic fermentation technology can reduce and harmless wastes such as straw and manure and convert them into clean energy and primary raw materials of organic fertilizer. It is one of the common technologies for resource utilization of agricultural wastes. The level of solid content (TS) is divided into wet anaerobic fermentation (TS≤12%) and dry anaerobic fermentation (abbreviated as "dry fermentation", TS≥20). Compared with wet fermentation technology, dry fermentation technology has high volume gas production rate; small footprint; stable operation process, no scum, sedimentation and other problems in wet process; low water demand or no water, saving water The advantages of less biogas slurry, low water content of waste residue and low cost of follow-up treatment are more and more favored by the market.

At present, in terms of dry fermentation, European countries and my country have carried out the development of anaerobic fermentation technology and equipment. The dry fermentation in Europe is mainly based on the German garage dry anaerobic technology. China discloses a horizontal baffled dry anaerobic fermentation reaction device with patent CN102242052 B, and patent CN 206768095 U discloses a garage Type anaerobic fermentation reactor, patent CN 209816130 U provides a stirrer for dry anaerobic fermentation, etc., mainly batch fermentation mode, the patent is carried out from the aspects of fermenter structure, stirring shaft design, etc. Research.

According to the current research on dry fermentation engineering with high solid content, it is found that batch dry fermentation is inconsistent with the continuous production of waste, and cannot meet the requirements; the closed environment in the reactor is easily damaged during the continuous feeding and discharging process. , resulting in the failure of fermentation; in addition, the continuous dry fermentation with high solid content has poor fluidity and difficulty in feeding and discharging materials; agricultural wastes only treated by anaerobic fermentation have problems of low conversion rate and low efficiency; currently the biogas residue produced by anaerobic fermentation It is often discarded, but it contains rich nitrogen, phosphorus, potassium and other nutrients. Comprehensive utilization of biogas residues has problems such as difficulty in dehydration and high cost of transfer and transportation. At present, there is no integrated dry anaerobic fermentation and aerobic fermentation at the same time. Complete system for organic fertilizer production.

Therefore, there is an urgent need for a new technical solution in the existing technical equipment to solve the difficulty of resource utilization of agricultural waste in the actual process.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention provides a continuous dry anaerobic-aerobic two-stage coupled fermentation system, which adopts a segmented spiral structure in structure, and is suitable for continuous feeding and discharging of wastes with high solid content; The spiral structure is connected with the hollow tube, and matched with materials with a certain solid content, to achieve synchronous sealing and linkage adjustment; the spiral structure and the hollow tube are matched to connect the dry anaerobic fermenter and the aerobic fermenter in two-stage coupling, realizing no Destroy the sealed environment of the anaerobic fermentation tank to achieve continuous, stable and efficient gas production. At the same time, it can carry out anaerobic gas production and aerobic fertilizer production and anaerobic gas and fertilizer co-production fermentation treatment for materials, which greatly improves the material quality. utilization rate, reducing environmental pollution.

The present invention is achieved through the following technical solutions:

It can carry out anaerobic and aerobic continuous fermentation, with convenient feeding and discharging, good sealing effect, and convenient operation. The fermentation process parameters can also be calculated according to the material conditions of the hollow tube. In addition, the materials can be fermented separately anaerobic and aerobic, which improves the utilization rate and production efficiency of materials and reduces environmental pollution.

The present invention is realized in this way, a continuous dry anaerobic-aerobic two-stage coupled fermentation system includes a first feeding screw, a first hollow tube, a second feeding screw, a dry anaerobic reaction module, the first feeding screw, the second hollow tube, the second feeding screw and the aerobic reaction module;

The first feeding screw includes a first feeding barrel, a first feeding shaft, and a feeding hopper, the first feeding shaft is installed inside the first feeding barrel, and the first feeding shaft is connected with the first feeding shaft. The first feeding cylinder is arranged coaxially, the top of one end of the first feeding cylinder is provided with a feeding hopper, and the bottom of the other end of the first feeding cylinder is provided with a vertical setting. the first hollow tube;

The second feeding screw includes a second feeding barrel and a second feeding shaft, and the top of one end of the second feeding barrel has a feeding port, and the feeding port passes through the first hollow tube communicate with the first feeding cylinder, the second feeding shaft is installed inside the second feeding cylinder, the second feeding shaft and the second feeding cylinder are coaxially arranged, the The lower surface of the upper end of the second feeding cylinder has a material outlet;

The dry anaerobic reaction module includes an anaerobic fermenter and a discharge pipe of the anaerobic tank, the top of the anaerobic fermenter is connected to the discharge port of the second feeding drum, and the bottom of the anaerobic fermenter is connected to the discharge port of the second feeding barrel. A discharge pipe of the anaerobic tank is connected;

The first feeding screw includes a first feeding cylinder and a first feeding shaft, the first feeding cylinder is inclined, and the upper surface of the lower end of the first feeding cylinder has a feeding port, so The feed port is communicated with the anaerobic tank discharge pipe through the anaerobic tank discharge pipe, the first feeding shaft is installed inside the first feeding cylinder, and the first feeding shaft is connected to the anaerobic tank. The first feeding cylinder is arranged coaxially, the upper end of the lower surface of the first feeding cylinder is connected with a second hollow tube, and the second hollow tube is vertically arranged;

The second feeding screw includes a second feeding cylinder and a second feeding shaft, the second feeding cylinder is inclined, and the upper surface of the lower end of the second feeding cylinder has a feeding port, so The feeding port communicates with the first feeding cylinder through the second hollow pipe, the second feeding shaft is installed in the second feeding cylinder, and the second feeding shaft is connected to the first feeding cylinder. The two feeding cylinders are arranged coaxially, and the lower surface of the upper end of the second feeding cylinder has a discharge port;

The aerobic reaction module includes an aerobic fermentation tank and an aerobic tank discharge pipe, the top of the aerobic fermentation tank is connected to the discharge port of the second feeding cylinder, and the bottom of the aerobic fermentation tank is connected with a discharge port. A discharge pipe of the aerobic tank, the discharge pipe of the aerobic tank is provided with a valve;

A first pressure relief valve is installed on the upper end of the anaerobic fermentation tank, and a second pressure relief valve is installed at the upper end of the aerobic fermentation tank.

Preferably, one end of the first feeding shaft, one end of the second feeding shaft, one end of the first feeding shaft and one end of the second feeding shaft are respectively fixedly connected to the output end of a drive motor.

Preferably, a first stirring shaft is installed in the anaerobic fermentation tank, and one end of the first stirring shaft extends from the top of the anaerobic fermentation tank and is fixedly connected to the output end of a first stirring motor, so A first helical blade is fixed on the outer wall of the first stirring shaft.

Preferably, a second stirring shaft is installed in the aerobic fermentation tank, and one end of the second stirring shaft extends from the top of the aerobic fermentation tank and is fixedly connected to the output end of a second stirring motor, so A second helical blade is fixed on the outer wall of the second stirring shaft.

Preferably, both the first hollow tube and the second hollow tube are made of transparent tempered glass material.

Preferably, both the first hollow tube and the second hollow tube are provided with height scales.

Preferably, the first hollow tube is provided with a first bin wall vibrator, and the second hollow tube is provided with a second bin wall vibrator.

Preferably, the anaerobic fermenter is connected to the discharge port of the second feeding barrel through an anaerobic tank feed pipe, and the aerobic fermenter is connected to the second feed pipe through an aerobic tank feed pipe The outlet of the barrel. Both the anaerobic tank feed pipe and the aerobic tank feed pipe are provided with a one-way valve, and the one-way valve includes a valve seat arranged on the corresponding feed pipe, a ball valve on the lower side of the valve seat, and The ball valve is connected and fixed to the spring corresponding to the inlet of the feed pipe.

Preferably, the connection between the first hollow tube and the first feeding cylinder and the second feeding cylinder, and the second hollow tube and the first feeding cylinder and the second feeding cylinder can be fixed by welding. It can also be connected by bolts, and a sealing gasket is installed at the connection to play a sealing role. The first hollow tube or the second hollow tube can be spliced in sections, so that the section splicing can be more flexible for the length of the hollow tube. Adjustment to facilitate the use of different processes and the installation and construction of various scenes.

Compared with the prior art, the beneficial effects of the present invention are: compared with the prior art, the beneficial effects of the present invention are: a continuous dry anaerobic-aerobic two-stage coupled fermentation system of the present invention, by setting The spiral feeding module and the feeding and discharging module input and output materials. The spiral feeding module and the feeding and discharging module are connected by a hollow tube between the two sections of the spiral. The hollow tube retains a certain height of material at any time, and uses the fermentation material to contain water. The characteristic of the rate of about 60%-80% is matched with the special design of the hollow tube in the feeding and discharging module to meet the requirements of both continuous feeding and sealing. The anaerobic reaction module and the aerobic reaction module are connected in series through the first discharging screw, the second hollow pipe and the second feeding screw, which not only ensures the closed and continuous discharging function of the anaerobic fermentation module, but also completes the aerobic The continuous feeding of fermentation realizes the function of dynamically adjusting the two-stage fermentation process according to the requirements of gas and fertilizer products. The system can realize continuous fermentation, has good sealing performance, high processing efficiency, and can dynamically adjust the effect of two-stage fermentation.

Description of drawings

1 is a schematic diagram of the overall structure of a continuous dry anaerobic-aerobic two-stage coupled fermentation system of the present invention;

FIG. 2 is an enlarged schematic diagram of a detail of part A in FIG. 1 .

In the picture:

11 feed hopper, 12 first feed drum, 13 first feed shaft, 14 first hollow tube, 141 first bin wall vibrator, 15 second feed drum, 16 second feed shaft, 21 exhaust Oxygen fermentation tank, 22 anaerobic tank discharge pipe, 23 anaerobic tank feeding pipe, 24 first stirring motor, 211 first pressure relief valve 25 first stirring shaft, 26 first spiral blade, 31 first feeding drum , 32 the first feeding shaft, 33 the second hollow tube, 331 the second warehouse wall vibrator, 34 the second feeding cylinder, 35 the second feeding shaft, 41 aerobic fermentation tank, 42 aerobic tank discharge pipe , 43, aerobic tank feed pipe, 44, second stirring motor, 411 second pressure relief valve, 45 second stirring shaft, 46 second spiral blade, 421 valve, 5 one-way valve, 51 valve seat, 52 ball valve , 53 springs.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Please refer to Figure 1-2, the present invention provides a technical solution: a continuous dry anaerobic-aerobic two-stage coupled fermentation system, including a first feeding screw, a second feeding screw, a dry anaerobic reaction Module, first feed screw, second feed screw and aerobic reaction module.

The first feeding screw includes a first feeding barrel 12, a first feeding shaft 13, a feeding hopper 11 and a first hollow tube 14. The first feeding shaft 13 is installed inside the first feeding barrel 12. The feeding shaft 13 and the first feeding cylinder 12 are arranged coaxially, a feeding hopper 11 is provided on the top of one end of the first feeding cylinder 12, and a vertical feeding hopper 11 is provided at the bottom of the other end of the first feeding cylinder 12 The first hollow tube 14, the outer wall of the first hollow tube 14 is provided with a first bin wall vibrator 141.

The second feeding screw includes a second feeding barrel 15 and a second feeding shaft 16 , the top of one end of the second feeding barrel 15 has a feeding port, and the feeding port communicates with the first feeding port through the first hollow tube 14 The material barrel 12 and the second feeding shaft 16 are installed inside the second feeding barrel 15 , and the second feeding shaft 16 and the second feeding barrel 15 are arranged coaxially.

The dry anaerobic reaction module includes an anaerobic fermenter 21 and an anaerobic tank discharge pipe 22. The top of the anaerobic fermenter 21 is connected to the discharge port of the second feeding barrel 15, and the bottom of the anaerobic fermenter 21 is connected with a Anaerobic tank discharge pipe 22.

The first feeding screw includes a first feeding cylinder 31, a first feeding shaft 32 and a second hollow tube 33. The first feeding cylinder 31 is inclined and the upper surface of the lower end of the first feeding cylinder 31 has a The feeding port is connected to the anaerobic fermentation tank 21 through the anaerobic tank discharge pipe 22. The first feeding shaft 32 is installed inside the first feeding cylinder 31, and the first feeding shaft 32 is connected to the first feeding cylinder. 31 is arranged coaxially, the upper end of the lower surface of the first feeding cylinder 31 is connected with a second hollow tube 33, the second hollow tube 33 is arranged vertically, and the outer wall of the second hollow tube 33 is provided with a second warehouse Wall vibrator 331 .

The second feeding screw includes a second feeding cylinder 34 and a second feeding shaft 35, the second feeding cylinder 34 is inclined, and the upper surface of the lower end of the second feeding cylinder 34 has a feeding port. The first feeding cylinder 31 is communicated with the second hollow tube 33 , the second feeding shaft 35 is installed in the second feeding cylinder 34 , and the second feeding shaft 35 and the second feeding cylinder 34 are coaxially arranged.

The aerobic reaction module includes an aerobic fermentation tank 41 and an aerobic tank discharge pipe 42, the top of the aerobic fermentation tank 41 is connected to the discharge port of the second feeding cylinder 34, and the bottom of the aerobic fermentation tank 41 is connected with a The aerobic tank discharge pipe 42, the aerobic tank discharge pipe is provided with a valve 421.

In this embodiment, the first feeding cylinder 12 and the second feeding cylinder 15 are arranged obliquely, and the second feeding cylinder 15 is located below the first feeding cylinder 12 . Both the first hollow tube 14 and the second hollow tube 33 are arranged vertically. Two ends of the first hollow tube 14 are connected to the first feeding cylinder 12 and the second feeding cylinder 15 by welding. Two ends of the second hollow tube 33 are connected to the first feeding cylinder 31 and the second feeding cylinder 34 by welding. The feeding hopper 11 is used for the user to input the material to be fermented. The material enters the first feeding barrel 12, and the first hollow tube 14 conveys the material when the first feeding shaft 13 rotates, and then enters the second feeding Drum 15, when the second feeding shaft 16 rotates, the material is transferred to the anaerobic fermentation tank 21, and after the material is anaerobic fermentation in the anaerobic fermentation tank 21, the material is transported from the first feeding shaft 32 through the first feeding shaft 32. The barrel 31 conveys the second hollow pipe 33 , the material in the second hollow pipe 33 flows into the second feeding barrel 34 , and when the second feeding shaft 35 rotates, the material is transported to the aerobic fermentation tank 41 . When the fermentation of the aerobic fermentation tank 41 is completed, the fermented material is passed through the discharge pipe 42 of the aerobic tank, and the valve 421 is opened to discharge the fermented organic fertilizer. During the fermentation process, a certain height of material is kept in the first hollow tube 14 and the second hollow tube 33 at any time, blocking the direct communication between the first feeding cylinder 12, the second feeding cylinder 34 and the anaerobic fermentation tank 21. , prevent the air from entering the anaerobic fermentation tank, and realize the dynamic sealing of the material and the hollow tube. In other embodiments, the first feeding screw 1 , the second feeding screw 2 , the first feeding screw 4 , and the second feeding screw 5 may adopt other forms of conveying devices. In addition, a level measuring instrument for detecting the height of the material can be arranged on the top wall of the anaerobic fermentation tank 21 , so as to facilitate the user to obtain the material height in the anaerobic fermentation tank 21 in real time. In other embodiments, 1-2 observation windows may be provided on the anaerobic fermentation tank 21 for the user to observe the height of the material.

Further, one end of the first feeding shaft 13, one end of the second feeding shaft 16, one end of the first feeding shaft 32 and one end of the second feeding shaft 35 are respectively fixedly connected to the output end of a driving motor.

In this embodiment, a drive motor is installed at the ends of the first feeding cylinder 12 , the second feeding cylinder 15 , the first feeding cylinder 31 and the second feeding cylinder 34 , and the driving motor is used to drive the first feeding cylinder 31 . The feeding shaft 13, the second feeding shaft 16, the first feeding shaft 32 and the second feeding shaft 35 rotate, and the drive motor is connected to an external power source.

Further, a first stirring shaft 25 is installed in the anaerobic fermentation tank 21, and one end of the first stirring shaft 25 protrudes from the top of the anaerobic fermentation tank 21 and is fixedly connected to the output end of a first stirring motor 24. A first helical blade 26 is fixed on the outer wall of the stirring shaft 25 .

Further, a second stirring shaft 45 is installed in the aerobic fermentation tank 41, and one end of the second stirring shaft 45 protrudes from the top of the aerobic fermentation tank 41 and is fixedly connected to the output end of a second stirring motor 44. A second helical blade 46 is fixed on the outer wall of the stirring shaft 45 .

In this embodiment, the first stirring motor 24 is used to drive the first stirring shaft 25 to rotate, and the first stirring shaft 25 stirs the material in the anaerobic fermentation tank 21 through the first helical blade 26 to improve the fermentation effect. The stirring motor 24 is connected to an external power source. The second stirring motor 44 is used to drive the second stirring shaft 45 to rotate. The second stirring shaft 45 stirs the material in the aerobic fermentation tank 41 through the second helical blade 46 to improve the fermentation effect. The second stirring motor 44 is connected to an external power source .

Further, both the first hollow tube 14 and the second hollow tube 33 are made of transparent tempered glass material.

In this embodiment, the first hollow tube 14 and the second hollow tube 33 made of tempered glass have stable structures and good light transmission effect, which is convenient for users to observe the state of the materials.

Further, the first hollow tube 14 and the second hollow tube 33 are both provided with a height scale, which is convenient for the operator to observe the height of the material in the hollow tube, provides convenience for process optimization and research, and can also be installed. Various other automatic height detection devices, such as infrared height detection devices, etc.

Further, the outer wall of the first hollow tube 14 is provided with a first bin wall vibrator 141 , and the second hollow tube 33 is provided with a second bin wall vibrator 331 . The warehouse wall vibrator is an energy-saving general-purpose product with a vibration motor as the excitation source. It relies on high-frequency vibration and impact force to effectively eliminate bridging and bridging caused by internal friction, deliquescence, electrification, and component segregation. It is one of the necessary equipments to ensure the stable supply of materials, so that the materials can be discharged smoothly from the silo mouth. The use of the silo vibrator here can make the solid or semi-solid raw materials not easy to hang on the wall and increase the density of the settled materials and improve the air tightness.

Further, the anaerobic fermentation tank 21 is connected to the discharge port of the second feeding cylinder 15 through an anaerobic tank feeding pipe 23, and the material can enter the anaerobic fermentation tank 21 through the anaerobic tank feeding pipe 23; the aerobic fermentation tank 41 is connected to the discharge port of the second feeding cylinder 34 through an aerobic tank feeding pipe 43, and the material can enter the aerobic fermentation tank 41 through the aerobic tank feeding pipe 43. The feed pipe can be easily disassembled and assembled the whole dry continuous fermentation device, and other devices such as on-off valves can also be set to facilitate the later optimization and improvement of the device.

Further, the anaerobic fermenter 21 is connected to the discharge port of the second feeding cylinder 15 through an anaerobic tank feed pipe 23 , and the aerobic fermenter 41 is communicated through an aerobic tank feed pipe 43 The discharge port of the second feeding cylinder 34 . The anaerobic tank feed pipe 23 and the aerobic tank feed pipe 43 are both provided with a one-way valve 5, and the one-way valve 5 includes a valve seat 51 arranged on the corresponding feed pipe, and is placed under the valve seat A ball valve 52 on the side and a spring 53 connected to the ball valve 52 and fixed to the corresponding feed pipe opening.

In this embodiment, the one-way valve 5 prevents the fermenter, whether it is the aerobic fermenter 41 or the anaerobic fermenter 21, from flowing back into the corresponding hollow tube. In addition, the one-way valve 5 can be adjusted by the spring 53 To adjust the pressure at the outlet of the second feeding cylinder 15 and the second feeding cylinder 34, by increasing the pressure at the outlet of the second feeding cylinder 15 and the second feeding cylinder 34, increase the pressure of the second feeding cylinder 15 and the second feeding cylinder 34. The density of the material in the feeding cylinder 34 can improve the air tightness, and the pressure of the spring can be adjusted, which is convenient for the optimization of different material processes. The rotation speed of the shaft 35 is optimized for the design of the process, and the fermentation equipment is more convenient to use.

Further, the first hollow tube 14 is connected with the first feeding cylinder 12 and the second feeding cylinder 15 , and the second hollow tube 33 is connected with the first feeding cylinder 31 and the second feeding cylinder 34 They can be fixed together by welding, or they can be connected by bolts. The sealing gasket is installed at the connection to play a sealing role. The first hollow tube 14 or the second hollow tube 33 can also be spliced in sections, so that the splicing can be more flexible. The adjustment of the length of the hollow tube is convenient for the use of different processes and the installation and construction of various scenarios.

The working principle and use process of the present invention: after the present invention is installed, the pretreatment of the raw materials is carried out first, so that the moisture content of the fermented material reaches 60% to 80%. The user puts the material to be fermented into the feeding hopper 11 , the material enters the first feeding cylinder 12 , the first hollow tube 14 conveys the material when the first feeding shaft 13 rotates, and then enters the second feeding cylinder 15 , when the second feeding shaft 16 rotates, the material is transferred to the anaerobic fermentation tank 21. After the material undergoes anaerobic fermentation in the anaerobic fermentation tank 21, the anaerobic fermentation tank 21 during the first fermentation needs to be deoxygenated. , the operation of removing oxygen from the research and development fermentor 21 will not be required in the subsequent fermentation of the same batch of materials. The material is transported from the first feeding cylinder 31 to the second hollow tube 33 through the first feeding shaft 32, and the material in the second hollow tube 33 flows into the second feeding cylinder 34. When the second feeding shaft 35 rotates, The material is transported to the aerobic fermentation tank 41, the fermentation of the aerobic fermentation tank 41 is completed, the fermented material is passed through the aerobic tank discharge pipe 42, and the valve 421 is opened to discharge the waste material.

The two-stage coupled fermentation system provided by the present invention can carry out dry anaerobic-aerobic two-stage continuous fermentation, and the feeding and discharging of materials is convenient. There is always a certain height of material in the aerobic fermentation tank 21, so that the aerobic fermentation tank 21 can be always in a sealed state during the feeding and discharging process, and can continuously feed and discharge materials, which greatly improves the fermentation efficiency and the utilization rate of materials. The first pressure relief valve 211 can release the pressure when the air pressure of the anaerobic fermentation tank 21 is too high, and the second pressure relief valve 411 can release the pressure when the air pressure of the aerobic fermentation tank 41 is too high, so that the device operates more safely.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. A continuous dry anaerobic-aerobic two-stage coupling fermentation system is characterized in that: comprises a feeding module, a dry anaerobic reaction module, a discharging module and an aerobic reaction 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;

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, the second material conveying shaft and the second material conveying cylinder are coaxially arranged, and a material outlet is formed in the lower surface of the upper end of the second material conveying cylinder;

the aerobic reaction module comprises an aerobic fermentation tank and an aerobic tank discharge pipe, the top of the aerobic fermentation tank is connected with the discharge hole of the second feed delivery cylinder, the bottom of the aerobic fermentation tank is connected with the aerobic tank discharge pipe, and the aerobic tank discharge pipe is provided with a valve;

and the aerobic fermentation tank and the anaerobic fermentation tank are respectively provided with a pressure release valve.

2. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of 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. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 1, wherein: install a first (mixing) shaft in the anaerobic fermentation jar, the one end of first (mixing) shaft is followed anaerobic fermentation jar's top stretches out and the output of a fixed connection first agitator motor, be fixed with first helical blade on the outer wall of first (mixing) shaft.

4. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 1, wherein: the aerobic fermentation tank is internally provided with a second stirring shaft, one end of the second stirring shaft extends out of the top of the aerobic fermentation tank and is fixedly connected with the output end of a second stirring motor, and a second helical blade is fixed on the outer wall of the second stirring shaft.

5. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 1, wherein: the first hollow tube and the second hollow tube are both made of transparent toughened glass materials.

6. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 5, wherein: the first hollow pipe and the second hollow pipe are provided with height scales.

7. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 6, wherein: the first hollow pipe and the second hollow pipe are both provided with bin wall vibrators.

8. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 1, wherein: the anaerobic fermentation tank is communicated with a discharge port of the second feed cylinder through an anaerobic tank feed pipe, and the aerobic fermentation tank is communicated with a discharge port of the second feed cylinder through an aerobic tank feed pipe.

9. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 8, wherein: the anaerobic jar inlet pipe with the aerobic jar inlet pipe all is equipped with the check valve, the check valve is including establishing the disk seat that corresponds the inlet pipe, the top in disk seat downside the ball valve and with the ball valve is connected and is fixed in and corresponds the orificial spring of feeding.

10. The continuous dry anaerobic-aerobic two-stage coupled fermentation system of claim 1, wherein: the first feeding screw, the first hollow pipe and the second feeding screw are connected in a welding mode; the first material conveying spiral, the second hollow pipe and the second material conveying spiral are connected in a welding mode.

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