New air supply fermentation equipment

Abstract

The present invention discloses a novel air supply fermentation equipment, comprising: a container, wherein a fermentation space is formed inside the container for materials to be fermented, and a plurality of first air outlets are also arranged at the bottom of the container, wherein the first air outlets are used to supply air into the airtight container at the bottom of the airtight container along a first direction; a stirring module, wherein the stirring module comprises a main shaft, a plurality of stirring blades and a driving mechanism, wherein the stirring blades are arranged on the main shaft, the driving mechanism is used to drive the main shaft to rotate, and a second air outlet is arranged on at least one stirring blade, wherein the second air outlet is used to discharge air away from the bottom of the airtight container; and an air supply module, wherein the air supply module is used to independently supply air to the first air outlet and the second air outlet respectively. By adopting the first air outlet at the bottom to cooperate with the second air outlet in the middle to supply air, the fermentation effect is optimized and the fermentation efficiency is improved.

Description

Technical Field

[0001] The invention relates to biological reaction equipment, in particular to a novel air supply fermentation equipment. Background Art

[0002] At present, with the promotion of industrialized farms, a large amount of organic waste such as feces and food residues will be generated in the farms. How to recycle organic waste harmlessly is an urgent problem to be solved. Chinese Patent No. 2009101777454 discloses a fermentation and drying treatment device for organic waste, which is provided with a rotating shaft in an airtight container, a stirring blade is provided on the rotating shaft, the stirring blade is used to stir the organic waste, and the air supply mechanism is used to output air through the air outlet on the stirring blade to achieve the fermentation of the organic waste in the airtight container. However, this prior art has defects: the stirring blade is intermittently moving during operation, usually rotating once in 1 hour, and after the air is output from the stirring blade, only a local area can be ventilated, and the aerobic fermentation process is also limited to the ventilated area, which leads to discontinuous air intake of the equipment, uneven fermentation, and serious impact on the fermentation efficiency; in addition, in a device with a large amount of organic waste treatment, under a large load condition, the low efficiency and high cost caused by the defects of the previous air supply method are particularly prominent. In some cases, the density of organic waste in the fermentation device is uneven, and the defects of low efficiency and high cost caused by the original air supply method are also obvious; the use of air outlet holes on the bottom-level stirring blades to output air limits the distance between the blades and the bottom of the container and the blade arrangement method, which is not conducive to improving the stirring effect; the method of forming an air duct inside the stirring blades is also unfavorable to the blade manufacturing process and the improvement of structural strength.

[0003] In view of this, how to design a technology with high fermentation efficiency, good fermentation effect and low production cost is the technical problem to be solved by the present invention. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a new air supply fermentation equipment to optimize the fermentation effect, improve the fermentation efficiency and reduce the production cost.

[0005] The technical solution provided by the present invention is a novel air supply fermentation equipment, comprising:

[0006] An airtight container, wherein a fermentation space for fermenting materials is formed inside the airtight container, a feed port, a discharge port and an exhaust port are arranged on the airtight container, and a plurality of first air outlets are arranged at the bottom of the airtight container, wherein the first air outlets are used to supply air into the airtight container at the bottom of the airtight container along a first direction;

[0007] A stirring module, the stirring module comprising a main shaft, a plurality of stirring blades and a driving mechanism, the main shaft is provided with an air flow channel, the stirring blades are arranged on the main shaft, the driving mechanism is used to drive the main shaft to rotate, at least one of the stirring blades is provided with a second air outlet, the second air outlet is used to leave the bottom of the airtight container to discharge air, and the second air outlet is communicated with the air inlet channel;

[0008] An air supply module, the air supply module is used to independently supply air to the first air outlet and the second air outlet respectively;

[0009] The first direction is consistent or substantially consistent with the direction in which the stirring blade rotates.

[0010] Furthermore, the stirring blade arranged at the bottom of the lower shaft body is not provided with the second air outlet.

[0011] Furthermore, the first air outlet portion includes a first air outlet hole arranged on the bottom of the airtight container and a wind cover cooperating with the first air outlet hole, the wind cover covers the top of the corresponding first air outlet hole, and the side of the wind cover forms an air outlet.

[0012] Furthermore, an inclined surface or a curved surface is formed on a portion of the air cover facing away from the air outlet.

[0013] Furthermore, a notch is provided on one side of the wind hood, and the notch forms the air outlet; or, the edge of the wind hood is distributed around the outer circumference of the air outlet, and the air outlet is opened on the side wall of the wind hood.

[0014] Furthermore, a closing device is provided on the first air outlet, and the closing device is used to close the first air outlet when the first air outlet is not emitting air.

[0015] Furthermore, a closing device is provided on the first air outlet, and the closing device is used to close the first air outlet when the first air outlet is not emitting air. The closing device is a baffle on the first air outlet that cooperates with the air outlet, and the upper part of the baffle is hinged on the wind cover, and the baffle is used to close the air outlet when the first air outlet is not emitting air.

[0016] Furthermore, an air inlet cavity is provided at the bottom of the airtight container, the first air outlet is connected to the air inlet cavity, and the airflow delivered by the air supply module enters the air inlet cavity and is then distributed to each of the first air outlets.

[0017] Furthermore, a plurality of support members are provided in the air intake cavity, and the support members are vertically arranged in the air intake cavity.

[0018] Furthermore, a ventilation hole is provided on the support member.

[0019] Furthermore, the air intake cavity is divided into a plurality of air intake sub-cavities that are independent of each other.

[0020] Furthermore, the air supply module includes a first air supply source and a second air supply source, the first air supply source is connected to the air inlet sub-cavity through an air supply pipeline, and the second air supply source is connected to the air flow channel through an air supply pipeline.

[0021] Furthermore, the second air outlet is arranged on a surface of the stirring blade that faces away from the rotation direction of the stirring blade.

[0022] Furthermore, the second air outlet portion discharges air along a second direction; wherein the second direction is arranged opposite to the first direction, or the second direction is opposite to the forward direction of the stirring blade and inclined toward the bottom of the airtight container.

[0023] Furthermore, a ventilation duct is arranged on the outer surface of the stirring blade, the ventilation duct is communicated with the air flow channel, a second air outlet is arranged on the wall of the ventilation duct, and the second air outlet is the second air outlet portion.

[0024] Furthermore, the cross-section of the ventilation duct is polygonal, arc-shaped or circular, and the second air outlet is arranged on a portion of the outer wall of the ventilation duct below the horizontal plane where the outermost point is located.

[0025] Furthermore, an inner ventilation duct is formed inside the stirring blade, and the inner ventilation duct is communicated with the air flow channel. A third air outlet hole communicated with the inner ventilation duct is formed on the stirring blade, and the third air outlet hole is the second air outlet portion.

[0026] Furthermore, a shielding inclined plate is also provided on the stirring blade, and the shielding inclined plate covers the second air outlet portion.

[0027] Furthermore, the main shaft includes a lower shaft body and an upper shaft body, the upper shaft body is coaxially arranged with the lower shaft body, the upper shaft body is connected to the upper end of the lower shaft body, and the stirring blades are respectively arranged on the lower shaft body and the upper shaft body; the lower shaft body is a solid shaft, the upper shaft body is a hollow shaft, and the air flow channel is formed in the upper shaft body.

[0028] Furthermore, the stirring blade includes: a first plate body, a second plate body and a third plate body, the first plate body is arranged vertically, the second plate body is arranged horizontally and one end of the second plate body is connected to the lower part of the first plate body, and the third plate body is arranged obliquely and connected to the upper part of the first plate body and the other end of the second plate body.

[0029] Furthermore, the thickness of the first plate body is greater than the thickness of the second plate body and the thickness of the third plate body.

[0030] Furthermore, a plurality of the first air outlets are evenly distributed at the bottom of the airtight container.

[0031] Furthermore, a distribution density of the plurality of first air outlets on the bottom of the airtight container close to the main axis is smaller than a distribution density away from the main axis.

[0032] Furthermore, a distribution density of the plurality of first air outlets on the bottom of the airtight container close to the main axis is greater than a distribution density away from the main axis.

[0033] Compared with the prior art, the advantages and positive effects of the present invention are: by using the first air outlet at the bottom of the airtight container, the organic waste is supplied with air from the bottom of the material, so that the air supply condition is greatly improved, continuous air supply can be achieved, and the fermentation efficiency is improved; the second air outlet on the stirring blade supplies air in the organic waste, and the first air outlet and the second air outlet cooperate with each other. On the one hand, ventilation can be performed at the bottom of the airtight container to ensure the oxygen demand of the organic waste at the bottom during fermentation, and on the other hand, the second air outlet on the stirring blade can provide enough oxygen in the middle layer to meet the requirements of full fermentation inside the organic waste; and, combined with the air output from the first air outlet at the bottom, the principle of hot air rising can be used to further accelerate the evaporation and release of water in the organic waste at the bottom to accelerate the fermentation efficiency. In addition, since there is no need to supply air through the stirring blade at the bottom, the arrangement of the blades can be more flexible, so that the stirring effect of the blades is also improved, and the production efficiency is also improved.

[0034] The air outlet direction of the first air outlet is consistent or basically consistent with the direction in which the stirring blade rotates, so that the air output from the first air outlet will flow in the direction of movement of the organic waste at the bottom, which is conducive to the flow of air and materials, so that the air can be more evenly mixed with the organic waste at the bottom, thereby improving the requirement for uniform air supply at the bottom.

[0035] Providing a closing device on the first air outlet can effectively prevent the material from flowing back into the air supply system when the air supply is stopped, reduce equipment operation failures and improve operation efficiency. When the material density in the container is relatively uniform, multiple first air outlets are evenly distributed at the bottom of the airtight container to achieve a better air supply effect; when the material density in the container is uneven and the density is higher near the edge of the container, the distribution density of multiple first air outlets at the bottom of the airtight container near the main axis is less than the distribution density away from the main axis, so that the air supply effect is better; when the material density in the container is uneven and the density is lower near the edge of the container, the distribution density of multiple first air outlets at the bottom of the airtight container near the main axis is greater than the distribution density away from the main axis, so that the air supply effect is better. The above schemes will effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 It is a structural schematic diagram of an embodiment of the novel air supply fermentation equipment of the present invention.

[0038] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0039] Figure 3 for Figure 1 A partial enlarged schematic diagram of area B in the middle.

[0040] Figure 4 It is a cross-sectional view of the stirring blade in the embodiment of the novel air supply fermentation equipment of the present invention.

[0041] Figure 5 It is a top view of the bottom plate of the airtight container in the embodiment of the novel air supply fermentation equipment of the present invention.

[0042] Figure 6 It is a bottom view of the bottom plate of the airtight container in the embodiment of the novel air supply fermentation equipment of the present invention.

[0043] Figure 7 It is an exploded view of the bottom plate of the airtight container in the embodiment of the novel air supply fermentation equipment of the present invention.

[0044] Figure 8 This is one of the structural schematic diagrams of the air hood in the embodiment of the new air supply fermentation equipment of the present invention.

[0045] Fig. 9 This is the second structural schematic diagram of the air hood in the embodiment of the new air supply fermentation equipment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1-Figure 7 As shown, the novel air supply fermentation equipment of this embodiment includes:

[0048] An airtight container 1, wherein a fermentation space for materials to be fermented is formed inside the airtight container 1, a material feed port (not shown), a material discharge port (not shown) and an exhaust port (not shown) are provided on the airtight container 1, and a plurality of first air outlets are further provided at the bottom of the airtight container 1, wherein the first air outlets are used to supply air into the airtight container 1 at the bottom of the airtight container 1 along a first direction;

[0049] A stirring module 2, the stirring module 2 comprises a main shaft 21, a plurality of stirring blades 22 and a driving mechanism (not shown), the stirring blades 22 are arranged on the main shaft 21, the driving mechanism is used to drive the main shaft 21 to rotate, an air flow channel 210 is arranged in the main shaft 21, at least one stirring blade 22 is provided with a second air outlet, the second air outlet is used to leave the bottom of the airtight container 1 to discharge air, and the second air outlet is connected to the air inlet channel;

[0050] The air supply module 3 is used to independently supply air to the first air outlet and the second air outlet.

[0051] Specifically, two air supply methods are configured in the airtight container 1. One is to supply air from the bottom of the organic waste through the first air outlet at the bottom of the airtight container 1, and the air flow is output through the first air outlet and transported along the bottom of the airtight container 1; the other is to supply air inside the organic waste through the second air outlet configured on the stirring blade 22, and the air flow is output through the second air outlet and discharged away from the bottom of the airtight container 1.

[0052] Among them, the air supply method of the stirring blade 22 can meet the centralized air supply in a specific area inside the organic waste, and cooperate with the stirring function to fully mix the organic waste with the air output by the second air outlet. As for the air supply method of the first air outlet at the bottom, a more comprehensive and effective air supply can be performed at the bottom layer of the organic waste to ensure that the air supply at the bottom layer of the airtight container 1 is evenly distributed.

[0053] In addition, the air outlet direction of the first air outlet is set to be consistent or substantially consistent with the direction in which the stirring blade 22 rotates. In this way, when the stirring blade 22 drives the organic waste at the bottom to move, the airflow output from the first air outlet will follow the organic waste moving at the bottom of the airtight container 1, so that the air can be more evenly mixed with the organic waste at the bottom. When the stirring blade 22 does not move, the first air outlet located at the bottom of the airtight container 1 conveys air along the bottom surface, and the side air outlet method can avoid poor air outlet caused by the squeezing of the organic waste in the airtight container 1, and then effective air supply can be performed at the bottom, so that the air gradually rises to meet the fermentation oxygen requirements of the organic waste above, and maximizes the fermentation efficiency.

[0054] As for the air outlet direction of the second air outlet arranged on the stirring blade, the second air outlet is arranged on the surface of the stirring blade 22 that is opposite to the rotational forward direction of the stirring blade 22, and the second air outlet discharges air along the second direction; wherein the second direction is arranged opposite to the first direction, or the second direction is a direction inclined toward the bottom of the airtight container 1. Specifically, the first direction is the moving direction of the material in the airtight container 1, and the second direction is opposite to the moving direction of the material in the airtight container 1. In the process of the stirring blade 22 driving the organic waste to move in the airtight container 1, the air outlet direction of the first air outlet is the same as the moving direction of the organic waste in the airtight container 1, and then the airflow output by the first air outlet at the bottom assists the smooth movement of the organic waste at the bottom, so as to ensure that the organic waste at the bottom is evenly stirred and achieves uniform air supply, thereby solving the problem of uneven stirring of the organic waste at the bottom due to the pressure of the organic waste at the top. At the same time, for the second air outlet configured for the stirring blade 22, its air outlet direction is opposite to the moving direction of the organic waste in the airtight container 1. Especially during the movement of the stirring blade 22, the reverse output airflow is used to further blow and impact the material on the rear side of the stirring blade 22, which can meet the purpose of uniform stirring of the organic waste in the middle layer and achieve uniform air supply.

[0055] At the same time, the airflow output by the first air outlet and the airflow output by the second air outlet have opposite impact effects on the internal organic waste. The airflows in opposite directions can assist the stirring blades 22 to evenly stir the organic waste. The first air outlet and the second air outlet meet two air supply methods and can assist the stirring blades 22 to evenly stir the organic waste, which is more conducive to improving the fermentation efficiency.

[0056] In actual use, for the organic waste in the airtight container 1, on the one hand, the stirring blades 22 are used to supply air to meet the fermentation oxygen requirements of the organic waste in different height positions, and on the other hand, the bottom is supplied with air through the first air outlets 11 arranged at the bottom, so that uniform air supply is obtained on the cross section of the airtight container 1. In addition, heat will be generated during the fermentation process, and the principle of rising hot air will be used to make the air at the bottom gradually flow upward, and then uniform air will be supplied upward from the bottom to ensure that the part in the middle where the fermentation is most vigorous obtains sufficient and uniform air.

[0057] The first air outlet and the second air outlet may have the following structural forms.

[0058] The first air outlet portion includes a first air outlet 11 arranged on the bottom of the airtight container 1 and a wind cover 12 cooperating with the first air outlet 11, the wind cover 12 covers the corresponding first air outlet 11, and the side of the wind cover 12 forms an air outlet; and as for the second air outlet portion, it is a second air outlet 220 formed on the stirring blade 22, and the second air outlet 220 is connected to the air flow channel 210.

[0059] The specific use process is as follows: when the organic waste is put into the airtight container 1, the first air outlet 11 always supplies air at the bottom of the airtight container, so as to supply air at the bottom of the airtight container 1 during the feeding stage. After the organic waste is put into the airtight container 1, the second air outlet 220 on the stirring blade 22 supplies air to the outside, and at the same time, the first air outlet 11 is always in an air supply state to ensure that there is always air supply at the bottom, thereby improving the overall fermentation efficiency.

[0060] Among them, for the first air outlet 11 configured at the bottom of the airtight container 1, tons of organic waste will be put into the airtight container 1 during actual use. In order to prevent the first air outlet 11 at the bottom from being blocked by organic waste and effectively reduce the organic waste from falling into the first air outlet 11, a wind hood 12 is configured above the first air outlet 11, and the first air outlet 11 is protected by the wind hood 12. Specifically, when organic waste is put into the airtight container 1, the organic waste put into the airtight container 1 falls to the bottom and gradually accumulates, and the first air outlet 11 at the bottom is protected by the wind hood 12, which can effectively reduce the organic waste from entering the first air outlet 11. In the process of conveying the airflow outward through the first air outlet 11, the airflow output from the first air outlet 11 is guided by the wind hood 12 and conveyed outward from the air outlet along the bottom surface of the airtight container 1. The airflow output from the side wall of the wind hood 12 will push the organic waste on the front side to move. Compared with exhausting the air directly upward, the air resistance is smaller, which is more conducive to the smooth flow of the airflow.

[0061] In addition, the first air outlets 11 can be evenly distributed at the bottom of the airtight container 1. Specifically, the first air outlets 11 are distributed around the main axis 21 and have the same distribution density, so as to achieve the requirement that the air outlet volume of the first air outlets 11 in different areas of the bottom remains basically consistent, thereby meeting the requirement of uniform air supply. For organic wastes with different viscosities, the following settings can also be adopted for the distribution of the first air outlets 11. The density of the first air outlets 11 distributed close to the main axis 21 is less than the density of the first air outlets 11 distributed away from the main axis 21. Specifically, for materials with lower viscosity, due to the centripetal force during the rotation of the stirring blades 22, there is a situation where the organic waste moves toward the outside. For this reason, more first air outlets 11 are arranged on the periphery of the upper bottom plate 1021 so that the organic waste in the peripheral area can obtain more air supply, thereby achieving the requirement of uniform distribution of organic waste air supply as a whole. Alternatively, the density of the first air outlet holes 11 distributed close to the main shaft 21 is greater than the density of the first air outlet holes 11 distributed away from the main shaft 21. Specifically, when the viscosity of organic waste is relatively high, more organic waste will accumulate at the main shaft 21 due to the rotation of the main shaft 21. Therefore, more first air outlet holes 11 are arranged near the main shaft 21 to increase the gas output at this location, so as to meet the fermentation requirements of the organic waste near the main shaft 21 and also meet the overall requirement of uniform gas supply distribution for organic waste.

[0062] Furthermore, since the bottom of the airtight container 1 is provided with a plurality of first air outlet holes 11 to meet the requirements of air outlet, for the stirring blades 22 on the main shaft 21, the stirring blades 22 at the bottom layer do not need to be provided with second air outlet holes 220.

[0063] For the main shaft 21, it is only necessary to supply air to the upper part of the stirring blades 22. To this end, the main shaft 21 includes a lower shaft body 211 and an upper shaft body 212. The upper shaft body 212 is coaxially arranged with the lower shaft body 211, and the upper shaft body 212 is connected to the upper end of the lower shaft body 211. The lower shaft body 211 and the upper shaft body 212 are respectively provided with stirring blades 22; the lower shaft body 211 is a solid shaft, the upper shaft body 212 is a hollow shaft, and an air flow channel 210 is formed in the upper shaft body 212. Specifically, for the main shaft 21, it adopts a split design and is configured with a lower shaft body 211 with a solid structure and an upper shaft body 212 with a hollow structure. In this way, for the need to drill a hole to form an air flow channel 210 to drive the upper shaft body 212, its overall length is effectively shortened, and then in the actual process of processing the hole, the difficulty of processing is effectively reduced. At the same time, for the lower shaft body 211, it itself is a solid structure. On the one hand, the processing difficulty of the lower shaft body 211 is relatively low, and on the other hand, the overall structural strength of the lower shaft body 211 is relatively high. In this way, the lower shaft body 211 is driven and connected to the driving mechanism to ensure operational reliability. As for the connection method between the lower shaft body 211 and the upper shaft body 212, conventional shaft connection methods such as flanges can be adopted, which are not limited or elaborated here. In addition, in the case where the upper shaft body 212 is relatively long, in order to reduce the difficulty of drilling processing, the upper shaft body 212 can also further adopt a segmented design, that is, the upper shaft body 212 includes a plurality of sub-hollow shafts (not shown), each of which is provided with a stirring blade 22, and two adjacent sub-hollow shafts are connected together.

[0064] In some embodiments, when the height dimension of the airtight container 1 is relatively large, the second air outlet 220 also needs to be configured for part of the stirring blades 22 on the lower shaft body 211. For this purpose, a blind hole (not shown) can be provided at the upper end of the upper shaft body 212, and the blind hole is connected to the air flow channel 210; the stirring blade 22 arranged at the upper end of the lower shaft body 211 is provided with a second air outlet 220, and the blind hole is connected to the second air outlet 220. Specifically, for the lower shaft body 211, a blind hole is formed on its upper end surface, and the blind hole is connected to the second air outlet 220 on the stirring blade 22 arranged on the upper part of the lower shaft body 211. After the lower shaft body 211 and the upper shaft body 212 are docked together, the blind hole is connected to the air flow channel 210, so that the airflow through the air flow channel 210 can further flow into the stirring blade 22 arranged on the lower shaft body 211 through the blind hole and output from the second air outlet 220.

[0065] Further, in the case where the circumferential dimension of the airtight container 1 is large, the length of the matching stirring blade 22 also needs to be lengthened accordingly. For this reason, the bottom plate edge of the airtight container 1 is also provided with a support rail 14, and the support rail 14 is located below the free end of the bottom stirring blade 22. Specifically, in actual use, the stirring blade 22 will rotate intermittently, and for the stirring blade 22 located at the bottom, on the one hand, its free end is easily deflected downward by its own gravity, and on the other hand, the downward deflection of its free end will be aggravated by the squeezing of organic waste inside the airtight container 1. The free end of the stirring blade 22 is supported by the support rail 14 configured at the bottom of the airtight container 1, which can effectively reduce the deflection of the bottom stirring blade 22. At the same time, under the support of the support rail 14, the stirring blade 22 can be prevented from contacting the bottom plate of the airtight container and interfering with the wind cover 12, which is more conducive to improving the operating reliability of the equipment. Preferably, the support rail 14 surrounds the outside of the wind hood 12 and the height of the support rail 14 is greater than the height of the wind hood 12. With this design, the stirring blade 22 can be prevented from contacting and colliding with the bottom of the wind hood 12 due to deformation after long-term operation, which is more conducive to improving reliability of use.

[0066] In some embodiments, in order to improve the overall structural strength of the stirring blade 22 and the connection strength with the main shaft 21, the stirring blade 22 includes: a first plate 221, a second plate 222 and a third plate 223, the first plate 221 is arranged vertically, the second plate 222 is arranged horizontally and welded to the lower part of the first plate 221, the third plate 223 is arranged obliquely and welded to the first plate 221 and the second plate 222, the thickness of the first plate 221 is greater than the thickness of the second plate 222 and the thickness of the third plate 223; the ends of the first plate 221, the second plate 222 and the third plate 223 are respectively welded to the main shaft 21.

[0067] Specifically, during the welding process of the stirring blade 22 and the main shaft 21, since the thickness of the first plate 221 is relatively large, a larger welding area is formed between the first plate 221 and the main shaft 21. In this way, after the first plate 221 and the main shaft 21 are welded together, more solder can be filled in the welding area formed between the first plate 221 and the main shaft 21, so that the welding of the first plate 221 and the main shaft 21 is more firm and reliable. Since the thickness of the first plate 221 is relatively thick and the first plate 221 is arranged vertically, the weld between the first plate 221 and the main shaft 21 will be substantially parallel to the axis of the main shaft 21, which makes it easier for operators to operate during welding.

[0068] When the stirring blade 22 drives the organic waste in the airtight container 1 to move, the weld formed between the first plate 221 and the main shaft 21 can effectively meet the requirement of the force applied by the stirring blade 22 to the main shaft 21 to ensure the stirring reliability.

[0069] In addition, since the first plate 221 is arranged vertically, the bearing capacity of the first plate 221 is greatly improved in the height direction, and the bending resistance of the first plate 221 is further improved, thereby improving the bending resistance of the stirring blade 22 as a whole. In this way, after the length of the stirring blade 22 is lengthened according to the stirring needs, the deformation amount of the stirring blade 22 along the length direction is small, so as to further improve the reliability of the stirring blade 22.

[0070] As for the second plate 222 and the third plate 223, the second plate 222 and the third plate 223 are both welded to the edge of the first plate 221 and the main shaft 21. Taking the second plate 222 as an example, a welding area will be formed between the edge of the second plate 222 and the edge of the first plate 221, and the edge of the second plate 222 is fixed to the first plate 221 by welding; at the same time, a welding area will also be formed between the end of the second plate 222 and the main shaft 21, and the end of the second plate 222 is welded and fixed to the main shaft 21 by welding.

[0071] When the stirring blade 22 is assembled, in order to improve the connection strength between the three plates, a plurality of reinforcing plates 224 may be provided between the first plate 221, the second plate 222 and the third plate 223, and the plurality of reinforcing plates 224 are arranged along the length direction of the stirring blade 22. Specifically, a space having a cross section similar to a triangle is formed between the first plate 221, the second plate 222 and the third plate 223, and a plurality of reinforcing plates 224 are arranged in the space along the length direction of the stirring blade 22, and the reinforcing plates 224 will increase the structural strength and connection strength between the three plates. In actual assembly, the reinforcing plates 224 may be welded between the first plate 221 and the second plate 222, and then the third plate 223 may be welded; or the reinforcing plates 224 may be welded between the first plate 221 and the third plate 223, and then the second plate 222 may be welded.

[0072] For the stirring blade 22, in order to meet the requirements of air outlet, an internal ventilation channel can be formed inside the stirring blade 22, and a second air outlet hole 220 is opened on the first plate body 221 of the stirring blade 22. Correspondingly, the internal ventilation channel is connected with the airflow channel 210 on the main shaft 21 to supply air to the second air outlet hole 220. Alternatively, a ventilation duct 225 is provided on the outer surface of the first plate body 221 in at least one stirring blade 22, and a plurality of second air outlet holes 220 are also provided on the conveying channel, and the ventilation duct 225 is connected with the airflow channel 210. Specifically, the airflow introduced by the airflow channel 210 enters the ventilation duct 225 configured on the stirring blade 22 for conveying, and the airflow in the ventilation duct 225 is finally output to the airtight container 1 through each second air outlet hole 220. Since the ventilation duct 225 is outside the stirring blade 22, the air flow cross section of the external ventilation duct 225 is small, which makes the air flow speed larger, and finally makes the second air outlet 220 output high-speed air flow to supply air to the organic waste in the airtight container 1. At the same time, the second air outlet 220 is arranged on the outer wall of the ventilation duct 225 below the horizontal plane where the outermost point is located, so that the second air outlet 220 is shielded by the ventilation duct 225 itself, so as to reduce the organic waste from blocking the second air outlet 220.

[0073] As for the specific structural form of the ventilation duct 225, there can be many ways. For example: an air duct cover plate 226 is provided on the outer surface of the first plate body 221, and a ventilation duct 225 is formed between the air duct cover plate 226 and the first plate body 221, and a second air outlet 220 is provided on the air duct cover plate 226. Specifically, the cross-section of the air duct cover plate 226 is L-shaped or semicircular, and the air duct cover plate 226 is welded to the outer surface of the first plate body 221 so that a ventilation duct 225 is formed between the two. Among them, the two ends of the air duct cover plate 226 are respectively provided with end plates, and the end close to the main shaft 21 is provided with an air inlet, and the air inlet can be connected to the air flow channel 210 through a conventional air path connection method such as a pipeline. Alternatively, an air pipe (not shown) is provided on the outer surface of the first plate body 221, and a second air outlet 220 is provided on the pipe wall of the air pipe.

[0074] As for the wind cover 12, it is mainly used to block the top of the first air outlet 11 and to supply air flow output. Therefore, for the shape of the wind cover 12, it can adopt a rectangular or semicircular structure, etc., which is not limited or repeated here. In order to reduce the wind cover 12 blocking the movement of organic waste at the bottom, an inclined surface or an arc surface can be formed at the position of the wind cover 12 facing away from the first air outlet. Specifically, during the rotation of the stirring blade 22, the organic waste at the bottom rotates with the stirring blade 22, and because the wind cover 12 protrudes from the bottom of the airtight container 1, when the organic waste moves to the position of the wind cover 12, the organic waste can move along the inclined surface or the arc surface formed on the rear side of the wind cover 12 to ensure that the organic waste can smoothly cross the wind cover 12, thereby reducing or avoiding the accumulation of materials on the rear side of the wind cover 12, and at the same time, it is also conducive to reducing the resistance to the stirring blade 22.

[0075] In another embodiment, in order to meet the requirement of uniform air outlet of the first air outlet 11, an air inlet cavity 1000 is formed at the bottom of the airtight container 1, and the first air outlet 11 is connected to the air inlet cavity 1000. Specifically, the airflow output by the air supply module 3 first enters the air inlet cavity 1000, and each first air outlet 11 is connected to the air inlet cavity 1000, so that uniform air outlet of the first air outlet 11 at different positions can be ensured.

[0076] In order to meet the air supply requirements of the stirring blade 22 and the first air outlet 11, the air supply module 3 includes a first air supply source 31 and a second air supply source 32. The first air supply source 31 is connected to the air inlet cavity 1000 through an air supply pipeline, and the second air supply source 32 is connected to the air flow channel 210 through an air supply pipeline. Specifically, the first air supply source 31 includes a first fan 311 and a first air supply pipe 312. The first fan 311 is connected to the air inlet cavity 1000 through the first air supply pipe; similarly, the second air supply source 32 includes a second fan 321 and a second air supply pipe 322. The second fan 321 is connected to the air flow channel 210 through the second air supply pipe 322.

[0077] In a certain embodiment, the following structure can be adopted for the specific structural form of the bottom of the airtight container 1. The bottom plate of the airtight container 1 adopts a splicing structure, specifically including a plurality of assembling units 13, the assembling unit 13 includes an upper plate 131, a lower plate 132 and a connecting component 133, the upper plate 131 is located above the corresponding lower plate 132, the upper plate 131 and the lower plate 132 are connected together by the connecting component 133, an air inlet sub-cavity is formed between the upper plate 131, the lower plate 132 and the connecting component 133, and a plurality of air inlet sub-cavities constitute an air inlet cavity 1000; wherein, the upper plate 131 is provided with a plurality of first air outlet holes 11 connected to the air inlet sub-cavity, each first air outlet hole 11 is covered with a wind cover 12, and a first air outlet portion is provided on the side of the wind cover 12; the lower plate 132 is provided with at least one air inlet 1321; two adjacent assembling units 13 are connected and fixed together.

[0078] Specifically, the bottom plate of the airtight container 1 is spliced ​​with a plurality of splicing units 13. Since the bottom of the airtight container 1 is split, the volume of a single splicing unit 13 is small, which is convenient for modular production in the factory. After the processing is completed, the splicing unit 13 is also convenient for road transportation. At the same time, the modularly designed splicing unit 13 can be spliced ​​in multiple pieces to meet the requirements of airtight containers 1 of different specifications and sizes as needed, thereby realizing the fermentation of larger tonnage of organic waste.

[0079] During the on-site assembly process, since the splicing unit 13 has already connected and assembled the upper plate 131 and the lower plate 132 together through the connecting component 133 at the factory stage, during the on-site assembly, it is only necessary to align the various splicing units 13 and then perform simple external connection and fixation. This will greatly simplify the on-site assembly process, effectively reduce the difficulty of assembly, and at the same time be more conducive to improving assembly accuracy and efficiency. For the connection method of the splicing unit 13, bolts are usually used for fixed connection. For this purpose, bolt holes (not shown) are provided on the connecting component 133, and the bolts pass through the bolt holes to fix two adjacent connecting components 133 together. After the multiple splicing units 13 are fixedly connected together by bolts, the multiple assembly units 13 are assembled together to form a disc-shaped structure.

[0080] For a single assembly unit 13, it forms the air inlet sub-cavity by itself, and each air inlet sub-cavity is connected to the air supply module 3 respectively, so as to realize independent air supply for each air inlet sub-cavity. For a relatively large airtight container 1, the use of independent air inlet sub-cavities for air intake can better meet the air supply requirements of the first air outlet 11 at different positions. Preferably, in order to further separate the air inlet sub-cavity, a partition 134 can be further provided in the air inlet sub-cavity, and the partition 134 divides the air inlet sub-cavity into two air inlet areas, and an air inlet matching the air inlet area is provided on the lower plate 132.

[0081] In addition, in order to meet the installation requirements of the main shaft 21 in the stirring module 2, it is necessary to set an upper shaft hole 1311 on the upper plate body 131 in one of the assembly units 13, and correspondingly, set a lower shaft hole 1322 on the lower plate body 132, and the upper shaft hole 1311 is coaxially arranged with the lower shaft hole 1322. Specifically, the main shaft 21 is inserted into the upper shaft hole 1311 and the lower shaft hole 1322 to meet the installation requirements of the main shaft 21 in the airtight container 1.

[0082] Furthermore, a plurality of support members 135 are provided between the upper plate body 131 and the lower plate body 132. Specifically, the upper bottom plate needs to carry the organic waste in the airtight container 1, and therefore, the upper bottom plate needs to have sufficient structural strength to support the organic waste thereon. By disposing support members 135 between the upper bottom plate and the lower bottom plate, and using a plurality of support members 135 to connect the upper bottom plate 131 and the lower bottom plate 132, the structural strength requirement of the upper bottom plate 131 for carrying organic waste can be met. Preferably, in order to meet the requirements of air circulation inside the air inlet cavity 1000 and to ensure uniform air discharge from the first air outlets 11 at different positions, a vent 1351 can also be provided on the support member 135. Specifically, the arrangement of the support member 135 will generate a certain wind resistance in the air intake cavity 1000, and the use of the vent 1351 can ensure the smooth flow of air. At the same time, the support member 135 can also disperse the airflow in the air intake cavity 1000 to achieve a uniform airflow in the air intake cavity 1000.

[0083] In an optional embodiment, in order to further improve the anti-blocking capability of the first air outlet 11 and reduce the amount of organic waste entering the air inlet cavity 1000 through the first air outlet 11, as shown in FIG. Figure 8-Figure 9As shown, a closing device may be provided on the first air outlet, and the closing device is used to close the first air outlet when the first air outlet is not emitting air. Specifically, for the closing device, when the first air outlet is not emitting air, it will automatically close the side of the wind hood 12 to form an air outlet; and when the first air outlet is emitting air, the closing device opens the air outlet of the wind hood 12 due to the effect of air pressure. As for the manifestation entity of the closing device, a variety of structural forms may be adopted. For example: the closing device is a baffle 121 on the first air outlet that cooperates with the air outlet, and the upper end of the baffle 121 is connected to the wind hood 12 in a hinged manner. During use, when the first air outlet 11 delivers gas to the outside, under the effect of air pressure, Figure 8 As shown, the baffle 121 is turned upward at a certain angle to open so that air is output from the first air outlet. Fig. 9 As shown, the baffle 121 will be squeezed by the external organic waste and will automatically close the first air outlet, thereby minimizing the entry of organic waste into the first air outlet.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fermentation equipment with air supply, characterized in that: include: An airtight container, wherein a fermentation space for fermenting materials is formed inside the airtight container, a feed port, a discharge port and an exhaust port are arranged on the airtight container, and a plurality of first air outlets are arranged at the bottom of the airtight container, wherein the first air outlets are used to supply air into the airtight container at the bottom of the airtight container along a first direction; A stirring module, the stirring module comprising a main shaft, a plurality of stirring blades and a driving mechanism, the main shaft is provided with an air flow channel, the stirring blades are arranged on the main shaft, the driving mechanism is used to drive the main shaft to rotate, at least one of the stirring blades is provided with a second air outlet, the second air outlet is used to leave the bottom of the airtight container to discharge air, and the second air outlet is connected to the air flow channel; An air supply module, the air supply module is used to independently supply air to the first air outlet and the second air outlet respectively; Wherein, the first direction is consistent with the direction in which the stirring blade rotates; The first air outlet portion includes a first air outlet hole provided on the bottom of the airtight container and a wind cover matched with the first air outlet hole, the wind cover covers the top of the corresponding first air outlet hole, the side of the wind cover forms an air outlet, and the part of the wind cover facing away from the air outlet is formed with an inclined surface or an arc surface; a notch is provided on one side of the wind cover, and the notch forms the air outlet, or the edge of the wind cover is distributed around the outer circumference of the first air outlet, and the air outlet is opened on the side wall of the wind cover; The second air outlet is arranged on the surface of the stirring blade facing away from the rotation direction of the stirring blade; The main shaft includes a lower shaft body and an upper shaft body, the upper shaft body is coaxially arranged with the lower shaft body, the upper shaft body is connected to the upper end of the lower shaft body, and the stirring blades are respectively arranged on the lower shaft body and the upper shaft body; the lower shaft body is a solid shaft, the upper shaft body is a hollow shaft, and the air flow channel is formed in the upper shaft body.

2. The air supply fermentation equipment according to claim 1, characterized in that: The stirring blade disposed at the bottom of the lower shaft body is not provided with the second air outlet.

3. The air supply fermentation equipment according to claim 1 or 2, characterized in that: The first air outlet is provided with a closing device, and the closing device is used to close the first air outlet when the first air outlet is not emitting air.

4. The air supply fermentation equipment according to claim 1, characterized in that: The first air outlet is provided with a closing device, which is used to close the first air outlet when no air is emitted from the first air outlet. The closing device is a baffle on the first air outlet that cooperates with the air outlet, and the upper part of the baffle is hinged on the wind cover. The baffle is used to close the air outlet when no air is emitted from the first air outlet.

5. The air supply fermentation equipment according to claim 1, characterized in that: An air inlet cavity is disposed at the bottom of the airtight container, the first air outlet is communicated with the air inlet cavity, and the airflow delivered by the air supply module enters the air inlet cavity and is then distributed to each of the first air outlets.

6. The air supply fermentation equipment according to claim 5, characterized in that: A plurality of support members are also provided in the air intake cavity, and the support members are vertically arranged in the air intake cavity.

7. The air supply fermentation equipment according to claim 6, characterized in that: The support member is provided with a ventilating opening.

8. The air supply fermentation equipment according to any one of claims 5 to 7, characterized in that: The air intake cavity is divided into a plurality of air intake sub-cavities which are independent of each other.

9. The air supply fermentation equipment according to claim 8, characterized in that: The air supply module includes a first air supply source and a second air supply source. The first air supply source is connected to the air inlet sub-cavity through an air supply pipeline, and the second air supply source is connected to the air flow channel through an air supply pipeline.

10. The air supply fermentation equipment according to claim 1, characterized in that: The second air outlet portion discharges air along a second direction; wherein the second direction is arranged opposite to the first direction, or the second direction is opposite to the advancing direction of the stirring blade and inclined toward the bottom of the airtight container.

11. The air supply fermentation equipment according to claim 1, characterized in that: A ventilation duct is arranged on the outer surface of the stirring blade, the ventilation duct is communicated with the air flow channel, a second air outlet is arranged on the wall of the ventilation duct, and the second air outlet is the second air outlet portion.

12. The air supply fermentation equipment according to claim 11, characterized in that: The cross section of the ventilation duct is polygonal, arc-shaped or circular, and the second air outlet is arranged on the outer wall of the ventilation duct at a position below the horizontal plane where the outermost point is located.

13. The air supply fermentation equipment according to claim 1, characterized in that: An inner ventilation duct is formed inside the stirring blade, and the inner ventilation duct is communicated with the air flow channel. A third air outlet hole communicated with the inner ventilation duct is formed on the stirring blade, and the third air outlet hole is the second air outlet portion.

14. The air supply fermentation equipment according to any one of claims 10 to 13, characterized in that: The stirring blade is also provided with a shielding inclined plate, and the shielding inclined plate covers the second air outlet portion.

15. The air supply fermentation equipment according to claim 1 or 2, characterized in that: The stirring blade includes: a first plate body, a second plate body and a third plate body, the first plate body is arranged vertically, the second plate body is arranged horizontally and one end of the second plate body is connected to the lower part of the first plate body, and the third plate body is arranged obliquely and connected to the upper part of the first plate body and the other end of the second plate body.

16. The air supply fermentation equipment according to claim 15, characterized in that: The thickness of the first plate body is greater than the thickness of the second plate body and the thickness of the third plate body.

17. The air supply fermentation equipment according to claim 1 or 2, characterized in that: A plurality of the first air outlets are evenly distributed at the bottom of the airtight container.

18. The air supply fermentation equipment according to claim 1 or 2, characterized in that: The distribution density of the plurality of first air outlets on the bottom of the airtight container close to the main axis is smaller than the distribution density away from the main axis.

19. The air supply fermentation equipment according to claim 1 or 2, characterized in that: The distribution density of the plurality of first air outlets on the bottom of the airtight container close to the main axis is greater than the distribution density away from the main axis.

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