CN106396755B

CN106396755B - Fermentation equipment with agitating unit

Info

Publication number: CN106396755B
Application number: CN201610991531.0A
Authority: CN
Inventors: 满光明; 陈彤; 杨涛
Original assignee: Liaoning Dizhiyuan Environment Engineering Co ltd
Current assignee: Liaoning Dizhiyuan Environment Engineering Co ltd
Priority date: 2016-11-10
Filing date: 2016-11-10
Publication date: 2022-11-25
Anticipated expiration: 2036-11-10
Also published as: CN106396755A

Abstract

The invention relates to the field of organic fertilizer fermentation, in particular to fermentation equipment for treating livestock and poultry manure, which comprises a fermentation tank body and a stirring device, wherein the stirring device comprises: the fermentation tank is characterized in that the widths of the stirring arms of the fermentation layer stirring component and the preheating layer stirring component are gradually narrowed from the center to the edge of the fermentation tank body. By adopting the fermentation equipment, the energy consumption can be greatly reduced, and the water content of the decomposed material can be effectively reduced.

Description

Fermentation equipment with agitating unit

Technical Field

The invention relates to the field of organic fertilizer fermentation, in particular to a closed aerobic fermentation device with a stirring device for treating livestock and poultry manure.

Background

In China, the rapid development of livestock and poultry breeding plays an important role in rural economic development and farmer income increase, currently, livestock and poultry breeding enterprises in China carry out harmless treatment or resource utilization of livestock and poultry manure by less than 5 percent, most of livestock and poultry breeding enterprises in cities pollute the local environment, and the pollution of livestock and poultry manure is treated to an urgent degree. At present, the most common method for treating livestock and poultry manure in China is as follows: directly returning to the field, airing and drying for treatment. The method for directly applying the livestock and poultry manure is free from investment, simple and easy to operate, easy to utilize by farmers, inconvenient to apply in large quantities and limited in use. The method is the main method for treating the livestock and poultry manure at present, and accounts for more than 90 percent of the treatment mode. In addition, about 5 percent of the livestock and poultry manure is prepared by adopting a microbial composting method, which is to decompose and decompose the manure by utilizing microorganisms through artificially controlling conditions required by composting to produce high-efficiency organic fertilizer. The mode of microbial fermentation for treating the livestock and poultry manure is a universal method for treating the livestock and poultry manure internationally, and is a strong requirement for treating the livestock and poultry manure in China at present.

Closed high-efficient animal manure fermenting installation is present advanced animal manure treatment mode, and this type of fermenting installation is the key equipment that converts into the fertilizer behind the animal manure treatment, and it carries out aerobic fermentation to animal manure through actuating system's stirring and logical oxygen, discharges through the worm discharger to the organic material that becomes thoroughly decomposed again. The closed livestock and poultry manure fermentation device is totally closed by 'one inlet and one outlet', has no secondary pollution, high fermentation speed, direct production of organic fertilizer and low operation cost.

However, the closed livestock manure fermentation equipment available in the market still has the problems of insufficient fermentation, large energy consumption, high water content of the fermentation material and the like. Accordingly, there is a need in the art for an improved livestock manure treatment apparatus in one or more of the above aspects.

Disclosure of Invention

The invention unexpectedly discovers that the problems of insufficient fermentation, large energy consumption, high water content of fermented materials and the like commonly existing in the existing closed fermentation equipment for treating the livestock and poultry manure can be solved by reasonably designing the shape of the stirring arm of the stirring device in the fermentation equipment and optionally further configuring the number of the stirring arms on different stirring parts in the stirring device. In particular, the present invention provides a fermentation apparatus having a stirring device, thereby achieving the above-described effects.

Accordingly, in a first aspect, the present invention provides a fermentation apparatus comprising a fermenter and a stirring device, the stirring device comprising: the fermentation tank is characterized in that the width of the stirring arms of the fermentation layer stirring component and the preheating layer stirring component is gradually narrowed from the center to the edge of the fermentation tank.

In one embodiment, the number of stirring arms of the decomposing layer stirring part is greater than or equal to the number of stirring arms of the fermenting layer stirring part and greater than or equal to the number of stirring arms of the preheating layer stirring part. In a further embodiment, the decomposing layer stirring means comprises at least two or three stirring arms, such as two, three, four or five stirring arms, preferably three stirring arms; the fermenting layer agitating means and the preheating layer agitating means each comprise at least one agitating arm, such as one, two, three or four agitating arms, but preferably comprise one or two agitating arms.

In a preferred embodiment, the decomposing layer agitating part comprises three agitating arms, the fermenting layer agitating part comprises two agitating arms, and the preheating layer agitating part comprises two agitating arms.

In one embodiment, the distance between the fermenting layer agitating part and the decomposing layer agitating part is less than or equal to the distance between the fermenting layer agitating part and the preheating layer agitating part. The size of the distance can be set according to actual conditions. In the case where the stirring means in the fermentation apparatus of the present invention includes a plurality of decomposed layer stirring members, a plurality of fermentation layer stirring members, and/or a plurality of pre-heating layer stirring members, the "distance between the fermentation layer stirring members and the decomposed layer stirring members" referred to herein means the distance between the adjacent fermentation layer stirring members and the decomposed layer stirring members; similarly, the reference to "between the fermenting layer agitating member and the preheating layer agitating member" herein means a distance between the fermenting layer agitating member and the decomposing layer agitating member which are adjacent to each other.

In one embodiment, the width of the stirring arm of the decomposing layer stirring part is greater than the width of the stirring arm of the fermenting layer stirring part, and preferably does not vary from the center to the edge of the fermenting tank. In a preferred embodiment, the width of the stirring arm of the fermenting layer stirring part is greater than or equal to the width of the stirring arm of the preheating layer stirring part.

In one embodiment, the stirring device comprises at least one or two decomposed layer stirring elements, for example one, two, three, four or five decomposed layer stirring elements, preferably two decomposed layer stirring elements. In the case where the stirring device includes two or more stirring members for the decomposed layer, the distance between the stirring members for the adjacent decomposed layers may be set as the case may be. In this case, the number of stirring arms of each decomposed-layer stirring member may be the same or different, but the number of stirring arms of the lowest decomposed-layer stirring member is preferably larger than the number of stirring arms of the other decomposed-layer stirring members. For example, in the case where the stirring device includes two decomposed-layer stirring members, the lower decomposed-layer stirring member has three stirring arms, and the upper decomposed-layer stirring member has two stirring arms.

In one embodiment, the stirring device comprises at least one fermentation layer stirring element, such as one, two or three fermentation layer stirring elements, preferably one fermentation layer stirring element. In the case that the stirring apparatus includes two or more fermenting layer stirring members, the distance between the adjacent fermenting layer stirring members may be set according to actual conditions. In this case, the number of stirring arms of the stirring members of each fermentation layer may be the same or different.

In one embodiment, the stirring device comprises at least one preheating layer stirring element, such as one, two or three preheating layer stirring elements, preferably one preheating layer stirring element. In the case where the stirring apparatus includes two or more preheating-layer stirring members, the distance between the adjacent preheating-layer stirring members may be set according to actual conditions. In this case, the number of the stirring arms of the stirring members in the respective preheating layers may be the same or different.

In one embodiment, the stirring device is internally provided with a communicating gas passage, and the stirring arms of both the decomposed layer stirring part and the fermented layer stirring part are provided with a vent hole communicating with the gas passage. In a further embodiment, the number of vent holes on the stirring arm of the fermenting layer stirring part is greater than the number of vent holes on the stirring arm of the fermenting layer stirring part. In yet another embodiment, the pore size of the vent holes on the stirring arms of the decomposing layer stirring part is larger than the pore size of the vent holes on the stirring arms of the fermenting layer stirring part.

In a preferred embodiment, the diameter of the vent holes on the stirring arms of the decomposing layer stirring part is 1.0-3.0cm, preferably 1.4-2.4cm, most preferably 1.4cm, and the number of vent holes on each stirring arm is 5-8 per meter of radius of the fermenter, preferably 6-7 per meter of radius of the fermenter.

In a preferred embodiment, the diameter of the vent holes on the stirring arms of the stirring part of the fermentation layer is 0.7-1.3cm, preferably 0.9-1.1cm, most preferably 1.0cm, and the number of vent holes on each stirring arm is 3-6 per meter of radius of the fermenter, preferably 4-5 per meter of radius of the fermenter.

In the present application, the inventors have improved the stirring device in the fermentation apparatus of the present invention from the following aspects: (1) The width and relative width of each stirring arm in each stirring component; (2) the number of stirring arms in each stirring part; (3) the distance between the stirring parts.

The width of the stirring arm in the fermentation layer stirring part and the preheating layer stirring part is set to be gradually reduced from the center to the edge of the fermentation tank body, so that the stirring arm can be relatively more firmly fixed on the stirring shaft through the reinforcing plate structure. In addition, because the width is gradually reduced, the contact area between the stirring arm and the material is smaller, so that the resistance encountered by the stirring device of the fermentation equipment in operation can be greatly reduced, and the energy consumption is further greatly reduced, for example, the energy consumption can be reduced by up to 35 percent. For example, for a fermentation device with a capacity of 80 tons, the structural change can reduce the power consumption of the hydraulic stirring motor from 11.5kw to 7.5kw, and the electricity is saved by about 100 degrees in one day.

Furthermore, the relatively smaller number of stirring arms in the preheating zone stirring section and/or the fermenting zone stirring section further reduces the energy consumption of the fermentation apparatus of the present invention. By providing relatively more thoroughly decomposed layer stirring members and/or having each thoroughly decomposed layer stirring member contain relatively more stirring arms, more thorough tumbling and stirring at the thoroughly decomposed layer can be achieved. And furthermore, the stirring arms of the stirring parts of the decomposed layer are provided with more vent holes and/or larger vent holes, so that sufficient gas can be in full contact with the decomposed materials to take away the moisture in the decomposed materials, and the moisture content of the final decomposed materials can be about 35%.

Drawings

FIG. 1 is a cut-away perspective view of an exemplary embodiment of a fermentation apparatus of the present invention.

FIG. 2 is a schematic configuration diagram further illustrating an exemplary embodiment of a stirring device of the fermentation apparatus shown in FIG. 1.

FIG. 3 is a schematic view showing the overall structure of a decomposed layer stirring part of a stirring apparatus in a fermentation apparatus of the present invention.

FIG. 4 is a schematic view showing a part of the structure of a decomposing layer stirring part of a stirring apparatus in a fermentation apparatus according to the present invention.

FIG. 5 is a schematic view showing a part of the structure of a fermentation layer stirring part of a stirring apparatus in a fermentation apparatus of the present invention.

Detailed Description

Exemplary embodiments of the fermentation apparatus of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for purposes of illustration only and is not intended to limit the invention, its application, or uses. Also, the sizes and proportions of the respective components in the drawings are merely schematic and do not strictly correspond to actual products.

As described above, the existing apparatuses for treating livestock and poultry excrements are generally energy-consuming. How to reduce energy consumption while achieving sufficient stirring and reducing the water content of decomposed materials has been a great concern to those skilled in the art. The invention unexpectedly discovers that the problems of large energy consumption, insufficient fermentation, large moisture content of decomposed materials and the like commonly existing in the existing closed fermentation equipment for treating the livestock and poultry manure can be solved by reasonably designing the shape of the stirring arm of the stirring device in the fermentation equipment and optionally further configuring the number of the stirring arms of the stirring parts in each layer of the stirring device.

Accordingly, the present invention provides a fermentation apparatus comprising a fermenter and a stirring device, the stirring device comprising: the fermentation tank is characterized in that the width of the stirring arms of the fermentation layer stirring component and the preheating layer stirring component is gradually narrowed from the center to the edge of the fermentation tank.

A detailed description of a particular embodiment of the fermentation apparatus of the present invention will now be given with reference to the drawings accompanying the present specification.

FIG. 1 is a cut-away perspective view of an exemplary embodiment of a fermentation apparatus of the present invention. As can be seen from this figure, the fermentation apparatus 1 comprises a fermenter 11 and a stirring device 12.

Fig. 2 further shows the structure of the stirring device 12 of the fermentation apparatus 1 shown in fig. 1. As can be seen from this figure, the stirring device 12 includes a stirring shaft 120 longitudinally disposed at the center of the fermenter 11, and a decomposed layer stirring part 123, a fermented layer stirring part 122 and a preheated layer stirring part 121 transversely disposed on the stirring shaft 120 from bottom to top, the decomposed layer stirring part 123 includes three stirring arms 1231, the fermented layer stirring part 122 includes one stirring arm 1221, and the preheated layer stirring part 121 includes three stirring arms 1211. It should be noted that the stirring device 12 shown in fig. 2 is merely exemplary, and in the case where the number of the stirring arms of the decomposed layer stirring means is more than or equal to the number of the stirring arms of the fermented layer stirring means and more than or equal to the number of the stirring arms of the preheated layer stirring means, the decomposed layer stirring means, the fermented layer stirring means, and the preheated layer stirring means may include other numbers of stirring arms. For example, the decomposed layer agitating members 123 may include at least two agitating arms, such as two, three, four, or five agitating arms, but preferably include three agitating arms; each of the fermenting layer agitating part 122 and the preheating layer agitating part 121 may include at least one agitating arm, for example, one, two, three, or four agitating arms, but preferably each includes one or two agitating arms.

The distance between the fermentation layer stirring member 122 and the decomposed layer stirring member 123 is not more than the distance between the fermentation layer stirring member 122 and the preheating layer stirring member 121. The specific size of the distance can be set according to actual conditions. For example, the distance between the fermenting layer stirring member and the decomposing layer stirring member, and the distance between the fermenting layer stirring member and the preheating layer stirring member may be 50 to 70cm, preferably 55 to 65cm, and most preferably 60cm.

The stirring apparatus 12 shown in fig. 2 is an example including only one decomposed layer stirring part 123, one fermented layer stirring part 122, and one pre-heated layer stirring part 121. However, the stirring means in the fermentation apparatus of the present invention may include more than one decomposed layer stirring member, fermented layer stirring member and preheated layer stirring member. For example, the fermentation apparatus of the present invention may comprise: at least one, e.g. one, two, three, four or five, decomposing layer agitating element, preferably comprising two decomposing layer agitating elements; at least one fermenting layer agitating member, such as one, two or three fermenting layer agitating members, preferably including one fermenting layer agitating member; and at least one, e.g., one, two or three, preheating-layer stirring members, preferably comprising one preheating-layer stirring member.

In the case that the stirring device in the fermentation apparatus of the present invention includes more than one decomposed layer stirring part, fermentation layer stirring part and preheating layer stirring part, the distance between the respective decomposed layer stirring parts, the distance between the respective fermentation layer stirring parts, and the distance between the respective preheating layer stirring parts may be set according to actual conditions. For example, if the stirring device comprises two decomposed layer stirring parts, two fermentation layer stirring parts, and two pre-heating layer stirring parts, the distance between the two decomposed layer stirring parts may be 40-65cm, preferably 50-55cm, most preferably 50cm; the distance between the two fermentation layer stirring members may be 50-80cm, preferably 55-75cm, most preferably 60cm; the distance between the two preheating layer stirring members may be 50 to 80cm, preferably 60 to 70cm, most preferably 65cm.

In addition, the stirring shaft 120, the decomposed layer stirring part 123 and the fermentation layer stirring part 122 are internally provided with communicated gas channels, and the stirring arm 1231 of the decomposed layer stirring part 123 and the stirring arm 1221 of the fermentation layer stirring part 122 are both provided with vent holes communicated with the gas channels, so that the materials can be fully ventilated and stirred. The stirring arm 1211 of the preheating layer stirring member 121 may be provided with or without a vent hole communicating with the gas passage. However, for the purpose of energy saving, it is preferable that no vent hole is provided on the stirring arm 1211 of the preheating layer stirring member 121.

Finally, the specific structure of each stirring member will be described in more detail.

1. Decomposed layer stirring part:

as shown in fig. 3, the decomposed layer stirring member 123 is provided with three stirring arms 1231, and the three stirring arms 1231 are spaced by 120 degrees in pairs. However, it should be noted that other numbers of stirring arms may be provided on the decomposed layer stirring member, for example, two, four or five stirring arms may be provided, and the stirring arms may be spaced apart from each other by another number of degrees.

Fig. 4 is a schematic view of a part of the structure of the decomposed layer agitating member 123. As shown, the stirring arm 1231 is fixedly connected to the stirring shaft 120 by means of a reinforcing plate 1232. Specifically, the reinforcing plate 1232 is fixedly connected to the stirring shaft 120 by, for example, welding, and the stirring arm 1231 is also fixedly connected to the reinforcing plate 1232 by, for example, welding, so that the stirring arm 1231 and the stirring shaft 120 are more stably and firmly connected.

The stirring arms 1231 of the decomposing layer stirring member 123 may be of any suitable shape, and in this application, illustrated are flat stirring arms having a cross section of an obtuse isosceles triangle.

The width of the agitating arm 1231 of the decomposed layer agitating member 123 does not vary from the center to the edge of the fermenter 11, and thus more sufficient agitation can be ensured. However, the width of the stirring arm 1231 of the decomposed layer stirring member 123 may be gradually narrowed from the center to the edge of the fermenter body 11. As shown in fig. 2, the width of the stirring arm 1231 of the decomposed layer stirring member 123 is larger than the width of the stirring arm 1221 of the fermented layer stirring member 122, in order to achieve sufficient stirring and stirring.

A plurality of vent holes communicated with the gas passage in the stirring device 12 are distributed below the stirring arm 1231 of the decomposed layer stirring member 123. By way of example, the diameter of the vent may be 1.0-3.0cm, preferably 1.4-2.4cm, most preferably 1.4cm. In addition, the number of the vent holes on each stirring arm can be 5-8 in terms of the radius of each meter of the fermentation tank body, and is preferably 6-7 in terms of the radius of each meter of the fermentation tank body.

The stirring arm 1231 of the decomposed layer stirring member 123 may be made as an integral structure, but may be made as several parts, for example, two, three or four parts, for the purpose of convenient transportation. In case the stirring arm 1231 of the decomposed layer stirring member 123 is made in several parts, which are fixedly connected to each other by means of, for example, welding, etc. at the time of assembly, forming a complete stirring arm.

In addition, a plurality of auxiliary stirring members 1233 are provided on the stirring arm 1231 of the decomposed layer stirring member 123 to further assist the stirring. The auxiliary stirring member 1233 may have any shape suitable for stirring, but it is also possible to provide no auxiliary stirring member 1233. In the present application, the auxiliary agitating member 1233 is rectangular in a shape folded along the long side into a triangle in cross section, and is opened toward the agitating arm 1231 and fixed to the agitating arm 1231 by means such as welding.

2. Fermentation layer stirring part:

as shown in fig. 2, the fermenting layer agitating member 122 is provided with an agitating arm 1221. However, it should be noted that other numbers of stirring arms may be provided on the fermenting layer stirring member, for example, two, three, four or five stirring arms may be provided. The agitator arms may be uniformly arranged around the agitator shaft 120 or may be non-uniformly arranged around the agitator shaft 120.

Fig. 5 is a schematic view of a part of the structure of the fermenting layer agitating member 122. As shown, the stirring arm 1221 of the fermenting layer stirring part 122 is fixedly connected to the stirring shaft 120 by means of a reinforcing plate 1222. The connecting manner of the stirring arm 1221 and the stirring shaft 120 provided on the fermentation layer stirring part 122 is the same as the connecting manner of the stirring arm 1231 and the stirring shaft 120 provided on the decomposed layer stirring part 123, specifically, see the description related to the above subheading "decomposed layer stirring part".

Like the arms 1231 of the matured layer stirring part 123, the stirring arms 1221 of the fermenting layer stirring part 122 may also be of any suitable shape, in this application illustrated as flat stirring arms with a cross-section that is an obtuse isosceles triangle.

As shown in fig. 5, the width of the agitating arm 1221 of the fermenting layer agitating member 122 gradually narrows from the center to the edge of the fermenter body 11. The width of the agitating arm 1221 of the fermenting layer agitating part 122 is less than or equal to the width of the agitating arm 1231 of the decomposing layer agitating part 123 and greater than or equal to the width of the agitating arm 1211 of the preheating layer agitating part 121. Through the structure, the energy consumption of the fermentation equipment can be effectively reduced, for example, the energy consumption can be reduced by 35 percent. For example, for a fermentation device with a capacity of 80 tons, the structural change can reduce the power consumption of the hydraulic stirring motor from 11.5kw to 7.5kw, and the electricity is saved by about 100 degrees in one day.

A plurality of vent holes communicated with the gas channel in the stirring device 12 are distributed below the stirring arm 1221 of the fermentation layer stirring part 122. The number of the vent holes distributed on the agitating arms 1221 of the fermenting layer agitating member 122 is smaller and/or the pore size thereof is smaller than the vent holes distributed on the agitating arms of the decomposing layer agitating member. By way of example, the diameter of the vent holes may be 0.7-1.3cm, preferably 0.9-1.1cm, most preferably 1.0cm. The number of the vent holes on each stirring arm can be 3-6 in terms of the radius of the fermentation tank body per meter, and is preferably 4-5 in terms of the radius of the fermentation tank body per meter.

As with the stirring arms 1231 provided on the decomposed layer stirring part 123, the stirring arms 1221 provided on the fermentation layer stirring part 122 may also be made as an integral structure, or as several parts, see in particular the description relating to the subheading "decomposed layer stirring part" above.

The agitating arm 1221 of the fermentation layer agitating unit 122 may be provided with a plurality of auxiliary agitating members 1223 to further assist the agitation, like the agitating arm 1231 of the decomposed layer agitating unit 123, but it is also possible not to provide the auxiliary agitating members 1223. For further details, see the description relating to the subheading "decomposed layer stirring section" above.

3. Preheating layer stirring part:

as shown in fig. 2, the preheating layer agitating member 121 is provided with three agitating arms 1211 arranged at a distance of 120 degrees from each other. However, it should be noted that other numbers of stirring arms may be disposed on the preheating layer stirring member, for example, one, two, four or five stirring arms may be disposed, and the stirring arms may be spaced apart by another degree.

Like the stirring arms 1231 of the stirring element 123 of the decomposing layer, the stirring arms 1211 of the stirring element 121 of the preheating layer are also fixedly connected to the stirring shaft 120 by means of the reinforcing plate 1212. For more details see the description related to the subheading "decomposed layer stirring section" above.

As with the stirring arms 1231 of the decomposed layer stirring member 123, the stirring arms 1211 of the preheated layer stirring member 121 may also be of any suitable shape, exemplified in this application as flat stirring arms having a cross section of an obtuse isosceles triangle.

As shown in FIG. 2, the width of the agitating arm 1211 of the preheating layer agitating member 121 is gradually narrowed from the center to the edge of the fermenter body 11, but it is also possible, although not preferable, that the width is not changed from the center to the edge of the fermenter body 11. As shown in fig. 2, the width of the stirring arm 1211 of the preheating-layer stirring member 121 is smaller than or equal to the width of the stirring arm 1221 of the fermentation-layer stirring member 122, but is more preferably smaller than the width of the stirring arm 1221 of the fermentation-layer stirring member 122. Through adopting above structure, can reduce the area of contact of rabbling arm and material effectively, reduce the resistance from this, and then reduce the power consumption.

The stirring arm 1211 of the preheating-layer stirring member 121 may be provided with a vent hole, but preferably is not provided with a vent hole for the purpose of reducing power consumption.

The stirring arm 1211 provided in the preheating layer stirring part 121 may be formed as an integral structure or as several parts, like the stirring arm 1231 provided in the decomposed layer stirring part 123. For further details, see the description related to the subheading "decomposing bed agitation means" above.

Like the stirring arms 1231 of the decomposed layer stirring member 123, the stirring arms 1211 of the preheating layer stirring member 121 may be provided with a plurality of auxiliary stirring pieces to further assist the stirring, but it is also possible not to provide the auxiliary stirring pieces. For further details, see the description relating to the subheading "decomposed layer stirring section" above.

By using a fermentation device with a stirring apparatus as disclosed herein, it is possible to provide targeted and efficient stirring and aeration to different parts of the fermentation device, thereby providing for a more adequate aerobic fermentation, an efficient reduction of energy consumption and a required moisture content of the matured material, e.g. 35%.

In addition, although the fermentation apparatus of the present invention is originally intended for the treatment of livestock manure, its use is not limited thereto. The fermentation equipment can also be used for fermenting other sapropel such as municipal refuse, fallen leaves, agricultural refuse and the like.

In the present specification, when referring to "an exemplary embodiment", "a preferred embodiment", "one embodiment", and the like, it is intended that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in other ones of all the embodiments described. The embodiments of the present invention have been described above in detail. However, the aspects of the present invention are not limited to the above-described embodiments. Various modifications and substitutions may be made to the above embodiments without departing from the scope of the invention.

Claims

1. The utility model provides a fermentation equipment, fermentation equipment includes the fermenter body and agitating unit, agitating unit includes: the fermentation tank comprises a stirring shaft longitudinally arranged at the center of the fermentation tank body, and a decomposed layer stirring part, a fermentation layer stirring part and a preheating layer stirring part which are transversely arranged on the stirring shaft from bottom to top and are provided with stirring arms, wherein the widths of the stirring arms of the fermentation layer stirring part and the preheating layer stirring part are gradually narrowed from the center to the edge of the fermentation tank body; the width of the stirring arm of the decomposed layer stirring part is larger than that of the fermentation layer stirring part; and the width of the stirring arm of the fermentation layer stirring part is greater than or equal to that of the preheating layer stirring part;

a communicated gas channel is arranged in the stirring device, and vent holes communicated with the gas channel are arranged on the stirring arms of the decomposed layer stirring part and the fermentation layer stirring part;

the number of the vent holes on the stirring arm of the decomposing layer stirring part is more than that of the vent holes on the stirring arm of the fermenting layer stirring part; and/or the aperture of the vent hole on the stirring arm of the decomposing layer stirring part is larger than that of the vent hole on the stirring arm of the fermenting layer stirring part.

2. The fermentation apparatus of claim 1, wherein the number of the mixing arms of the decomposing layer mixing part is greater than or equal to the number of the mixing arms of the fermenting layer mixing part and greater than or equal to the number of the mixing arms of the preheating layer mixing part.

3. The fermentation apparatus of claim 2, wherein the maturity layer agitation component includes at least two agitation arms; the fermenting layer agitating part and the preheating layer agitating part each include at least one agitating arm.

4. The fermentation arrangement of claim 3, wherein the maturity layer agitation component includes at least three agitation arms.

5. The fermentation arrangement of claim 3, wherein the fermentation layer agitation means and the pre-heating layer agitation means each comprise at least two agitation arms.

6. The fermentation apparatus according to claim 1 or 2, wherein a distance between the fermentation layer stirring part and the decomposed layer stirring part is less than or equal to a distance between the fermentation layer stirring part and the preheated layer stirring part.

7. The fermentation apparatus according to claim 1 or 2, wherein the width of the stirring arm of the decomposed layer stirring member does not vary from the center to the edge of the fermenter body.

8. A fermentation arrangement according to claim 1 or 2, wherein the agitation means comprises at least one maturity level agitation member.

9. The fermentation arrangement of claim 8, wherein the agitation means comprises at least two maturity level agitation components.

10. Fermentation installation according to claim 1 or 2, characterized in that the stirring device comprises at least one fermentation layer stirring element.

11. The fermentation arrangement of claim 10, wherein the agitation means includes a fermentation layer agitation member.

12. Fermentation installation according to claim 1 or 2, characterised in that the stirring device comprises at least one preheating layer stirring element.

13. The fermentation apparatus of claim 12, wherein the stirring device comprises a preheating layer stirring member.