JP4047996B2 - Rice husk incinerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice husk incinerator capable of efficiently incinerating rice husks.
[0002]
[Prior art]
The carbide obtained by incinerating rice husks is used, for example, to lay on the bottom of a seedling box for growing rice seedlings to promote good growth of the seedlings. The rice husk carbide is conventionally produced by stacking rice husks outdoors and burning them, or incinerating them with a general waste incinerator.
[0003]
However, rice husks are difficult to burn, and when they are piled up and burned outdoors, or when incinerated with ordinary garbage incinerators, both the incineration efficiency is extremely poor, requiring a lot of labor and time, and a large amount of incomplete combustion residue. As well as remaining, there is a problem that it does not burn uniformly and becomes ash.
[0004]
[Problems to be solved by the invention]
The problem to be solved is that both the conventional means for incineration outdoors and the means for incineration with ordinary garbage incinerators have poor incineration efficiency, so it takes a lot of labor and time to obtain the carbide of rice husk, And incomplete burnout and ash are produced in large quantities. In addition, the rice husk is burned and the heat is also used.
[0005]
[Means for Solving the Problems]
This will be described with reference to the drawings. The present invention incorporates a screw conveyor 3 for conveying rice husks charged into a hopper 16 and a mortar-like body 2 having a slanted wall 20 through which a downstream outlet 4 of the screw conveyor 3 is inserted, on the mortar-like body 2. The V-shaped body 5 having a substantially hemispherical shape of a plane substantially V-shaped facing the downstream outlet 4 and having a plurality of through holes 6 is inclined to the downstream side, and both ends of the V-shaped body 5 A bottomed cylindrical container body 1 in which rib walls 7 and 7 are erected on the downstream side from the portion, and a carbide openable / closable outlet 18 is formed at the lower end of the peripheral wall. A central downward blowing nozzle 11 that detachably covers the upper end opening of the body 1 and blows air from above between the two ridge walls 7 and the V-shaped body 5 and a central downward blowing nozzle 11 hitting the shade portion 19 that is suspended from the root of the shade 11 in a substantially shade shape, A lid 8 with a built-in air path 10 and the heat exchanger 15 provided a pair of tangential outlet nozzle 12 for supplying air to form a spiral air flow in the edge portion, made of.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described. The rice husk incinerator according to this embodiment is mainly composed of a screw conveyor 3, a bottomed cylindrical container body 1, and a lid body 8.
[0007]
The screw conveyor 3 has a hopper 16 on the upstream side thereof, and is driven by a driving device (motor and speed reducer) 17 attached on the upstream side.
[0008]
The bottomed cylindrical container body 1 incorporates a mortar-shaped body 2 having an inclined wall 20 through which the downstream outlet 4 of the screw conveyor 3 is inserted. On this bowl-shaped body 2, a V-shaped body 5 having a substantially hemispherical shape of a plane and facing the downstream outlet 4 and having a plurality of through-holes 6 is tilted downstream. It is installed. In addition, on the bowl-shaped body 2, a pair of projecting walls 7 and 7 are erected in parallel from the both end portions of the V-shaped body 5 toward the downstream side. Furthermore, an openable / closable outlet 18 is formed at the lower end of the peripheral wall so as to be able to take out the carbide that is the incinerated rice husk.
[0009]
The lid 8 has a top-short cylindrical shape that is detachably placed on the upper end opening of the bottomed cylindrical container body 1 and incorporates an air passage 10. This air passage 10 is between the two ridge walls 7 provided on the mortar-shaped body 2 and the V-shaped body 5, and is a center that blows air from above into the planar recess 21 portion of the V-shaped body 5. A downward blowing nozzle 11 is suspended. Further, a pair of tangential blow nozzles 12 that supply air forming a spiral air flow to the upper edge portion of the bowl-shaped body 2 hitting the shade portion 19 that is suspended from the root of the central downward blow nozzle 11 in a substantially shade shape. Is provided obliquely downward. Air blowing by the air passage 10 is performed by the blower 9 provided at the end of the air passage 10.
[0010]
The bottomed cylindrical container body 1 is provided with an openable / closable outlet 18 for taking out the combustion rice husk carbide. This means that the lower portion of the bottomed cylindrical container body 1 becomes oxygen deficient when the outlet 18 is closed, and digests the combustion carbide. A heat exchanger 15 is built in the lid 8.
[0011]
The operation will be described. First, a desired amount of rice husk is put into the hopper 16. The rice husk in the hopper is continuously conveyed to the downstream side by a small amount by the screw conveyor 3 rotated by the driving device 17, and is supplied to the mortar-like body 2 from the downstream outlet 4 inserted through the inclined wall 20. The supplied rice husks are stacked so as to cover the V-shaped body 5 on the bowl-shaped body 2. In this process, only a desired amount of rice husk is thrown into the hopper 16, and thereafter, the screw conveyor 3 conveys little by little, so that labor is not required and time is not wasted.
[0012]
The rice husk supplied to the mortar-shaped body 2 is ignited by a lighter or the like. After the ignition, the lid 8 is put on the upper end opening of the bottomed cylindrical container body 1. Subsequently, air is sent from the center downward blowing nozzle 11 of the air passage 10 by the blower 9, and blown to the concave portion 21 portion of the V-shaped body 5 on the upper surface of the bowl-shaped body 2. Most of the blown air hits the lower surface of the rice husk stacked on the V-shaped body 5 through the plurality of through holes 6 of the V-shaped body 5, and the other part along the pair of rib walls 7, 7. To rise. Here, since air is applied to the lower surface of the rice husk, the rice husk efficiently burns, and the new rice husk supplied thereon also burns effectively. Furthermore, since the air pressure is increased and the air is dispersed over a wide range as the air passes through the plurality of through holes 6, the combustion efficiency of the rice husk can be further increased.
[0013]
The rice husk burns to become carbide, and is subsequently pushed up by the new rice husk supplied to reach the upper edge portion of the mortar-shaped body 2 along the pair of rib walls 7 and 7. The rice husk that has reached the upper edge portion further burns by the swirling flow of air blown from the tangential blow nozzle 12 that blows air to the upper surface of the cap portion 19, and then falls downward over the upper edge of the mortar-shaped body 2. The bottomed cylindrical container body 1 accumulates at the bottom. Accordingly, by simply putting a desired amount of rice husk into the hopper 16 and igniting it first, all the rice husks put into the hopper 16 can be automatically burned to obtain the carbide. Therefore, time is not wasted and time is not wasted.
[0014]
In addition, the carbide | carbonized_material of the rice husk collected on the bottom is discharged | emitted from the taking-out port 18. FIG. The combustion gas is exhausted through the chimney 13.
[0015]
The heat exchanger 15 is provided in the lid body 8, and by doing so, for example, hot water that can be used as a heat source can be obtained from this incinerator.
[0016]
Incidentally, the dimensions of the main part in the rice husk incinerator according to the present embodiment are as follows. Bottomed cylindrical container inner diameter = 600 mm, mortar-shaped outer diameter = 400 mm, mortar-shaped body height = 150 mm, screw conveyor outer diameter = 100 mm, arrangement of screw conveyor downstream outlet 4 = 40 mm from upper end of mortar-shaped body 2 and from lower end 10 mm.
[0017]
As a result of experiments using rice husk incinerators of the above dimensions, it was found that 0.5 liters of rice husk could be processed per minute. Also, there was no incomplete burning of the rice husk. In addition, the processing capacity of the rice husk incinerator of the present invention varies greatly depending on the volume of the mortar-shaped body 2, the air flow rate of the air passage 10, and the like.
[0018]
【The invention's effect】
In the rice husk incinerator of the present invention, the rice husk put into the hopper 16 is conveyed by a small amount by the screw conveyor 3 and burned. Therefore, unlike the conventional garbage incinerator, a large amount of rice husk is burned at once. It can be burned efficiently and reliably to obtain a carbide. In addition, since all the rice husks in the hopper 16 can be burned simply by putting a desired amount of the rice husks into the hopper 16 and igniting, work is not time-consuming and time is not wasted.
[0019]
Further, since air is applied to the lower surface of the rice husk, the rice husk is efficiently burned, and the new rice husk supplied thereon is also burned effectively. Furthermore, since the air pressure increases as the air passes through the through holes 6 and is dispersed over a wide range, the combustion efficiency of the rice husk can be further increased.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view showing a rice husk incinerator according to an embodiment of the present invention.
FIG. 2 is a plan view of the rice husk incinerator shown in FIG.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottomed cylindrical container body 2 Bowl-shaped body 3 Screw conveyor 4 Downstream exit 5 V-shaped body 6 Through-hole 7 Projection wall 8 Lid body 9 Air blower 11 Center downward blowing nozzle 12 Tangential blowing nozzle 13 Chimney 15 Heat exchanger 16 Hopper 17 Drive device 18 Take-out port 19 Cap portion 20 Slanted wall 21 Recessed portion

Claims (1)

A screw conveyor (3) for conveying rice husks charged into the hopper (16) and a mortar-like body (2) having a slant wall (20) through which the downstream outlet (4) of the screw conveyor is inserted, and the mortar A V-shaped body (5) having a plurality of through-holes (6) in a substantially hemispherical shape of a plane substantially V-shaped facing the downstream side outlet is inclined to the downstream side, A bottomed cylindrical shape in which a rib wall (7, 7) is erected on the downstream side from both ends of the V-shaped body, and a carbide openable / closable outlet (18) is formed on the lower end of the peripheral wall. A container body (1);
A center downward blowing nozzle (11) that detachably covers the upper end opening of the bottomed cylindrical container body and blows air from above between the two protruding wall and the V-shaped body, A pair of tangential blow nozzles (12) for supplying air that forms a spiral air flow to the upper edge portion of the scallop-like body, hitting the shade (19) suspended from the base of the downward blow nozzle in a substantially shade shape. A rice husk incinerator comprising an air passage (10) provided with a lid (8) containing a heat exchanger (15).

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