JP2003010818A - Apparatus for decomposing organic waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for decomposing organic waste and sawdust in a treatment tank to raise the degrading treatment efficiency of by uniformly stirring with a high reliability on durability of a stirring blade. SOLUTION: This apparatus for decomposing the organic waste has a rotating shaft 20 laid horizontally in the treatment tank 10 with an opening 11 on the top. A helically strip-shaped outer conveying blade 30 and an inner conveying blade 40 are installed around the rotating shaft 20. The inner conveying blade 40 is wider than that of the outer conveying blade 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic waste decomposition treatment apparatus for decomposing organic waste such as manure and livestock waste, and particularly suitable for large-scale decomposition of livestock excrement. The present invention relates to a waste decomposition processing apparatus.

[0002]

2. Description of the Related Art As a conventional decomposition processing apparatus, there is one disclosed in Japanese Patent Application Laid-Open No. 11-300324 by the applicant of the present application. This decomposing device is a device for stirring and mixing organic waste such as manure and garbage together with sawdust in the radial direction inside and outside, which are opposite to each other, to stir and mix, and to activate microorganisms and highly efficient microorganisms. Many excellent actions and effects are highly evaluated at academic conferences and various events, as they can be decomposed, and organic waste and sawdust after decomposition can be effectively used as high-quality fertilizers and soil conditioners. It is used for toilets, nursing care toilets, pet toilets, garbage processing machines, etc.

By the way, in recent years, studies have been made on the microbial decomposition treatment of excrement of livestock and the like by the above-mentioned decomposition treatment apparatus. For the microbial decomposition treatment of a large amount of material containing litter such as straw and sawdust in manure, microbial decomposition is performed by allowing the material to be uniformly conveyed and stirred in the treatment tank, thereby further decomposing it. It is necessary to improve processing efficiency. Furthermore,
It is also necessary to devise a method that prevents the conveying blade in the processing tank from being damaged or deformed by the reaction force received from a large amount of objects to be processed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to uniformly stir organic waste and sawdust in a processing tank, Another object of the present invention is to provide an apparatus for decomposing an organic waste, which can improve the efficiency of decomposing an organic waste and which has a highly reliable durability of a stirring blade.

[0005]

As a technical means of the present invention for solving the above-mentioned problems, a first aspect of the present invention is to provide a horizontally rotatable rotary shaft that can be driven and rotated in a processing tank having an opening on its upper surface. In the organic waste decomposition apparatus supporting the outer conveying blade and the inner conveying blade formed in a spiral band around the rotating shaft, the outer conveying blade is substantially the same as the rotating shaft. While being arranged on both sides of the central portion as a boundary, the first outer conveying blade and the second outer conveying blade formed so that the spiral directions are opposite to each other on the both sides, the inner conveying blade, A first inner conveying blade that is arranged inside the first outer conveying blade and is formed so that the spiral direction is opposite to the first outer conveying blade, and the inside of the second outer conveying blade. And a second conveyor blade formed so that the spiral direction is opposite to the second conveyor blade, and both of the inner conveyor blades have a width of the conveyor surface. It is formed to be wider than the width of the transfer surface of the outer transfer blade,
Between the outer and inner conveying blades and the inner surface on the axial side of the processing tank, there is a stirring unit that stirs the organic waste and sawdust in the circumferential direction so as not to adhere to the inner surface. It is characterized by being supported by.

The second invention is characterized in that the inner carrying blade is formed in a spiral band shape having a pitch larger than that of the outer carrying blade.

Further, in the third invention, each of the first outer conveying blade, the second outer conveying blade, the first inner conveying blade, and the second inner conveying blade is divided into a plurality in the axial direction. It is characterized by being

Further, in the fourth aspect of the present invention, the lower part of the processing tank is provided so that the inside of the processing tank communicates with the inside of the processing tank of another organic waste decomposing / processing apparatus, so that the water in the processing tank can be removed. It is characterized in that a water dispersion passage is provided for dispersion into another organic waste dispersion treatment apparatus.

Further, in the fifth invention, the agitating portion is a main agitating rod portion fixed to both sides of the rotating shaft so as to project substantially in axial symmetry, and a main bracing main portion from the center side of the rotating shaft. It is characterized by comprising a reinforcing stirrer portion fixed to reinforce the stirring rod portion, and a plurality of scraping portions protruding from the main stirring rod portion toward the inner side surface of the processing tank.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an example of an apparatus for decomposing organic waste according to the present invention. In this organic waste decomposition processing apparatus A, a rotating shaft 20 which can be driven and rotated by a motor 21 is horizontally installed in a processing tank 10 having an opening 11 with a lid on the upper surface, and the rotating shaft 20 is provided around the rotating shaft 20. An organic waste between the outer transport blade 30 and the inner transport blade 40 and the inner surface 10a on the axial side of the processing tank 10 that supports the outer transport blade 30 and the inner transport blade 40 formed in a spiral band. And a stirring unit 5 for stirring the sawdust in the circumferential direction so as not to adhere to the inner surface 10a.
0 is supported by the rotary shaft 20 and is configured to be capable of being transported by a 4-ton truck. Further, the inside of the treatment tank 10 is communicated with the inside of the treatment tank of another organic waste decomposing apparatus at the lower part of the treatment tank 10 to disperse the water in the treatment tank 10 into another organic waste. A water dispersion passage 60 is provided for dispersion into the processing device.

In the processing tank 10, a curved bottom plate 13 made of a corrosion-resistant metal plate such as stainless steel is fixed in a box-shaped housing 12 having an upper opening, and the upper opening of the housing 12 is closed by an upper plate 14. However, the upper plate 14 is provided with a single or plural opening portions 11 with a lid which can be opened and closed and which are used for throwing sawdust and organic waste and for inspecting the inside.

An upper T-shaped exhaust tube 15 having an exhaust fan 15a is provided at a substantially central portion of the upper plate 14 so that water in the processing tank 10 can be efficiently evaporated and exhausted. . The reference numeral 15b shown in the exhaust pipe 15
Is a rising piece that prevents rain from entering from the outside. In addition, an intake cylinder (not shown) is provided on the upper plate 14 as needed to intake air into the processing tank 10 so as to balance the flow rate of the exhaust gas from the exhaust cylinder 15.

The outer conveying blade 30 is provided with the rotating shaft 20.
While being placed on both sides of the approximately central part of
The first outer conveyance blade 31 and the second outer conveyance blade 32 are formed so that the spiral directions are opposite to each other on both sides thereof.

The inner carrying blade 40 is disposed inside the first outer carrying blade 31 and is formed so that the spiral direction is opposite to that of the second outer carrying blade 32. 41 and a second conveyor blade 42 that is arranged inside the second outer conveyor blade 32 and is formed so that the spiral direction is opposite to the second outer conveyor blade 32.

Each conveying blade 31, 32, 41, 42
Is formed by bending a long strip-shaped metal member into a spiral shape, is welded to the end portion side of the support rod 22 that is inserted and fixed substantially orthogonally to the rotating shaft 20, and is integrated with the rotating shaft 20. It is configured to rotate.

The base side of each support rod 22 (rotating shaft 2
(0 side), four reinforcing plates 22a having a triangular shape are welded and fixed in four directions on the outer peripheral surface thereof. These reinforcing plates 22a reinforce the support rod 22 so as not to be deformed or damaged by the reaction force received from the transported organic waste and sawdust, and the organic waste and sawdust near the outer periphery of the rotary shaft 20. Is stirred in the circumferential direction.

Each of the first inner carrying blade 41 and the second carrying blade 42 has a width W1 of its carrying surface.
Is formed to be wider than the width dimension W2 of the transport surfaces of the first outer transport blade 31 and the second outer transport blade 32. That is, the transport amount per unit area of the transport surface is configured such that the first inner transport blade 41 and the second transport blade 42 are larger than the first outer transport blade 31 and the second outer transport blade 32. ing.

Each of the first outer conveying blade 31, the second outer conveying blade 32, the first inner conveying blade 41, and the second conveying blade 42 is located approximately at the center of the entire length of each conveying blade. By interposing the gap c,
It is divided into two in the axial direction. The number of divisions is not limited to the example shown in the figure, and may be a plurality of divisions of three or more.

The stirring portion 50 reinforces the main stirring rod portion 51, which is fixed to both sides of the rotation shaft 20 so as to project in a substantially axially symmetrical manner, and the main stirring rod portion 51 from the center side of the rotation shaft 20 in a bracing manner. The reinforcing stirrer 52 is fixed as appropriate, and the plurality of scraping parts 53 projecting toward the inner surface 10a of the processing tank 10 at both ends of the main stirring bar 51 are provided. The stirring unit 50 stirs the organic waste and the sawdust in the circumferential direction so that the organic waste and the sawdust do not adhere to the inner side surface 10a of the processing tank 10. Side to the inner conveyance blade 40 side or from the inner conveyance blade 40 side to the outer conveyance blade 30 side to be reversed and conveyed.

Further, the stirring section 50 prevents the organic waste and sawdust from solidifying in a dumpling state due to the stirring action. Therefore, according to the stirring unit 50, it is possible to prevent the outer conveyance blade 30 and the inner conveyance blade 40 from receiving an axial reaction force from the organic waste and sawdust solidified in a dumpling shape.

The water dispersion passage 60 is a deformable bellows-shaped synthetic resin pipe, and is provided in the processing tank 10 of the organic waste decomposition processing apparatus A and the processing tank of another organic waste decomposition processing apparatus (not shown). By communicating these with the lower side thereof, the water accumulated on the bottom side inside the processing tank 10 is dispersed to other organic waste decomposition processing apparatus.

Reference numeral 71 in the drawing is a heater for maintaining the temperature in the treatment tank 10 at an appropriate temperature so that microbial decomposition is efficiently promoted, and reference numeral 72 is organic waste and sawdust in the treatment tank 10. It is a scraping opening with a lid provided to scrape out.

The heaters 71 are well-known heaters having an electric power of 800 W, and are fixed on the lower surface of the bottom plate 13 of the processing bath 10 to evaporate the moisture in the processing bath 10 and further to increase the temperature in the processing bath 10. The voltage is controlled so that the temperature is suitable for microbial decomposition. That is, when the water content of the organic waste is large in the processing tank 10, the energization voltage of the heater 71 is increased to evaporate the water content, and when the water content decreases due to evaporation, Processing tank 1
The energization voltage of the heater 71 is lowered so that the inside of 0 is set to a temperature (60 to 80 degrees) suitable for microbial decomposition.

Thus, according to the organic waste decomposition processing apparatus A, as shown in FIG. 3, the organic waste and the sawdust in the processing tank 10 are sized by the outer conveying blade 30 and the inner conveying blade 40. In addition to being conveyed in opposite directions inside and outside the direction, they are conveyed and circulate in opposite directions on both sides of the substantially central portion of the rotary shaft 20 as a boundary. At that time, since the widths of the transport surfaces of the first inner transport blade 41 and the second transport blade 42 are wider than the widths of the transport surfaces of the first outer transport blade 31 and the second outer transport blade 32, the inner transport blade 40 transports them. A relatively large amount of transported organic waste and sawdust can be secured. That is, temporarily
When the widths of the transport surfaces of the first inner transport blade 41 and the second transport blade 42 are the same as the widths of the transport surfaces of the first outer transport blade 31 and the second outer transport blade 32,
The carry amount of the outer carrying blade 30 having a large diameter is larger than the carry amount of the inner carrying blade 40, and the carry amount is unevenly distributed inside and outside in the radial direction. However,
In the organic waste decomposing / processing apparatus A having the above-described configuration, the uneven distribution of the inner and outer conveyance amounts in the radial direction reduces the circulation and stirring of the organic waste and sawdust substantially uniformly in the entire treatment tank 10. I am trying to be seen.

The transport direction of organic waste and sawdust is
By controlling the motor 21 to rotate at regular intervals,
It is designed to be converted in the direction opposite to the arrow shown in FIG.

Next, another embodiment of the organic waste decomposition processing apparatus B according to the present invention will be described with reference to FIG. This organic waste decomposition processing apparatus B is different from the above-mentioned organic waste decomposition processing apparatus A in that the inner conveyance blade 40
P1 is larger than the pitch P2 of the outer conveying blade 30. According to the organic waste decomposition apparatus B, since the pitch P1 of the inner carrying blades 40 is larger than the pitch P2 of the outer carrying blades 30, it is possible to increase the carry amount of the inner carrying blades 40. The amount of organic waste and sawdust conveyed in the opposite directions inside and outside in the radial direction can be made more uniform.

[0027]

Since the present invention is constructed as described above, it has the following effects. According to the first aspect of the present invention, the organic waste and sawdust in the processing tank are conveyed in opposite directions inside and outside in the radial direction, and also in opposite directions on both sides of the substantially central portion of the rotating shaft. Be circulated. At that time, since the width of the conveying surface of the inner conveying blade is formed to be wider than the width of the conveying surface of the outer conveying blade, the organic waste and the sawdust that are conveyed in opposite directions in the radial direction inside and outside The transport amount is equalized. Moreover, since the organic waste and sawdust are agitated by the agitating section so as not to adhere to the inner side surface of the processing tank, the organic waste and sawdust can be smoothly circulated in the radial direction, and the outer conveying blade and The axial load on the inner conveying blade is reduced. Therefore, by uniformly agitating the organic waste and sawdust in the entire treatment tank, the decomposition treatment efficiency of the organic waste can be improved, and the agitation blade has a highly reliable organic waste decomposition treatment. A device can be provided. Furthermore, according to the second invention, since the inner conveying blade is formed in a spiral band having a larger pitch than the outer conveying blade,
Stirring efficiency can be further improved by making the transport amounts of the organic waste and sawdust transported in opposite directions inside and outside the radial direction more uniform. Furthermore, according to the third aspect of the invention, since each carrying blade is divided into a plurality of pieces in the axial direction, it is possible to disperse the axial stress received by each carrying blade. Therefore, damage to each of the carrying blades is prevented, and thus durability reliability can be further improved.
Furthermore, according to the fourth invention, since water such as manure and the like accumulated in the lower side of the treatment tank can be dispersed to another organic waste decomposition treatment apparatus, microbial decomposition treatment efficiency due to excessive water in the treatment tank It is possible to alleviate the decrease in the amount of water, and, by connecting a plurality of organic waste decomposition treatment devices with the water dispersion passage, a large amount of manure can be decomposed efficiently. Furthermore, according to the fifth invention, since the stirring portion is configured to have a robust structure, it is possible to prevent deformation and damage of the stirring portion, and
It is possible to more reliably reduce the axial load applied to the outer conveyance blade and the inner conveyance blade.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of an organic waste decomposition processing apparatus according to the present invention from the front side.

FIG. 2 is a vertical cross-sectional view showing the organic waste decomposition apparatus from the side.

FIG. 3 is a vertical cross-sectional view showing a transport direction of organic waste and sawdust in a processing tank of the organic waste decomposition processing apparatus, with an internal structure omitted.

FIG. 4 is a vertical cross-sectional view showing another example of the organic waste decomposition processing apparatus according to the present invention from the front side.

[Explanation of symbols]

10: Treatment tank 11: opening 20: Rotation axis 30: Outer conveyance blade 31: First outer conveying blade 32: Second outer conveying blade 40: Inside conveyance blade 41: First inner conveying blade 42: Second conveying blade 50: Stirrer A and B: Organic waste decomposition equipment

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4D004 AA02 AA03 BA04 CA13 CA15                       CA19 CB28 CB32 CB43 CB44                       CB45 CC08 DA02 DA06 DA13                 4D059 AA01 AA07 BA01 BA46 BJ02                       BJ03 BJ04 BJ14 DB32                 4G078 AA02 AB20 BA01 DA14

Claims (5)

[Claims] 1. A rotating shaft which can be driven and rotated is horizontally installed in a processing tank having an opening on an upper surface, and an outer carrying blade and an inner carrying blade formed in a spiral band are provided around the rotating shaft. In the supporting apparatus for decomposing organic waste, the outer conveying blades are arranged on both sides of a substantially central portion of the rotating shaft as a boundary, and the spiral directions are opposite on both sides thereof. Consisting of a first outer conveyor blade and a second outer conveyor blade, the inner conveyor blade is arranged inside the first outer conveyor blade, the spiral direction relative to the first outer conveyor blade. First inner conveying blade formed to be in the opposite direction, and arranged inside the second outer conveying blade, so that the spiral direction is opposite to the second conveying blade. And the inner conveying blades are formed such that the width of the conveying surface is wider than the width of the conveying surface of the outer conveying blade. A stirring unit that stirs in the circumferential direction so as to prevent organic waste and sawdust from adhering to the inner surface is supported by the rotating shaft between the inner conveying blade and the inner surface on the axial side of the processing tank. An apparatus for decomposing and treating organic waste, which is characterized in that 2. The apparatus for decomposing and treating organic waste according to claim 1, wherein the inner conveying blade is formed in a spiral band shape having a pitch larger than that of the outer conveying blade. 3. The first outer carrying blade, the second outer carrying blade, the first inner carrying blade, and the second inner carrying blade are each divided into a plurality of pieces in the axial direction. The apparatus for decomposing organic waste according to claim 1 or 2. 4. The water in the treatment tank is dispersed in the lower portion of the treatment tank by connecting the inside of the treatment tank with the treatment tank of another organic waste decomposition treatment apparatus. The apparatus for decomposing organic waste according to any one of claims 1 to 3, further comprising a water dispersion passage for dispersing the water in the processing apparatus. 5. The stirrer comprises a main stirrer rod portion fixed to both sides of the rotary shaft so as to project substantially axially symmetrically, and a main stirrer rod portion reinforced in a bracing manner from the center side of the rotary shaft. 5. The organic material according to any one of claims 1 to 4, characterized in that it comprises a reinforcing stirrer portion that is fixed as appropriate, and a plurality of scraping portions that project from the main stirring rod portion toward the inner side surface of the processing tank. Waste decomposition equipment.