JPH02603B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, rice husks are carbonized and vaporized while the vaporized gas is combusted, and the combustion gas is drawn out by a blower and can be directly supplied to a husk dryer or a greenhouse as hot air or hot air. This article relates to a rice husk combustion device (Husqburner) that is used in various ways.

More specifically, the rice husk combustion device targeted by the present invention has a rice husk supply port 10 at the top and a discharge port 1 at the bottom, as shown in FIG.
1, an inclined wall 4 that forms a space in which the rice husk input from the supply port 10 does not enter is installed on a shelf at an angle of inclination larger than the angle of repose of the rice husk, and descending edge 40 of
is formed at the free end so that the rice husks form a resting surface M according to the angle of repose from the descending edge 40 and flow below the inclined wall 4, and the resting surface m of the rice husks
A space isolated from the outside by the inclined wall 4 is formed in a rice husk vaporization combustion chamber a, and the vaporization combustion chamber a is connected to the suction port 60 of the blower 6 through a pipe 7 forming the main combustion chamber. The vaporizing combustion chamber a is connected to a feed cylinder 50 in which the air supply port 5 opens into the vaporizing combustion chamber a above the rest surface m, and the downward edge 40 of the inclined wall 4 is connected to the vaporizing combustion chamber a. The rice husks that flow in and accumulate to form the bottom of the vaporization combustion chamber a are dry-distilled into a smoky charcoal form by the heat within the vaporization combustion chamber a, and the vaporized gas produced thereby is passed through the air supply port 5 of the feed cylinder 50. Combustion occurs in the vaporization combustion chamber a with the combustion air supplied from the blower 6.
is drawn out to pipe 7 by suction, where it is fully combusted,
The hot air in a completely combusted state is drawn into the suction port 60 of the blower 6.

In this type of rice husk combustion device, the combustion gas of rice husks is drawn out by the blower 6 and used directly as hot air or hot air, so the drawn out hot air or warm air does not contain soot or incompletely combusted gas. It is required that the temperature is maintained at a constant temperature. For this purpose, it is assumed that the combustion of the vaporized gas in the vaporization combustion chamber a is controlled to a constant state, so a blower 5a is installed in the feed cylinder 50 that supplies combustion air to the vaporization combustion chamber a. A control valve 5b is provided in the middle of the feed cylinder 50 to feed a certain amount of combustion air to the vaporization combustion chamber a. Therefore, it is difficult to maintain the temperature of the hot air (or hot air) taken out by the blower 6 at a desired temperature, and it is difficult to control the temperature of the hot air (or warm air) to be kept constant. There is a problem in that it is difficult to extract hot air that does not contain combustion gas.

The present invention has been made in order to solve these problems that have arisen with the conventional means.In order to stabilize the temperature of the hot air taken out by the blower, it is possible to properly control the temperature inside the pipe to keep it constant. The first objective is to provide a means for making the process easier. A second object of the present invention is to provide a means for accurately controlling the temperature of the outside air that dilutes the combustion gas to be constant in order to stabilize the temperature of the hot air taken out by the blower. A third object of the present invention is to provide a means for accurately controlling the temperature of the hot air taken out from the combustion operation in the vaporization combustion chamber in order to stabilize the temperature of the hot air taken out by the blower.

In the present invention, as a means for achieving the first object, in the rice husk combustion apparatus of the above-mentioned form, the opening on the outer end side of the feed cylinder is opened to the outside air, and the opening degree is adjusted to the opening. A control valve is provided, and a conduit disposed between the vaporization combustion chamber and the suction port of the blower is formed into a conduit having a zigzag flow path, and the conduit is formed into a secondary combustion chamber. At the same time, an outer cylinder is provided on the outer periphery of the pipe, and the outer periphery of the pipe and the inner periphery of the outer cylinder create an air passage that communicates with the suction port of the blower on one end and communicates with the outside air on the other end with the vaporization combustion chamber. A rice husk combustion device is proposed, characterized in that a damper is provided in the air path to adjust the suction air directed toward the suction port, and a second rice husk combustion device is provided.
As a means for achieving this purpose, in the combustion apparatus of the above-mentioned form, an opening on the outer end side of the feed cylinder is opened to the outside air, and a control valve for adjusting the opening degree is provided in the opening, and further, forming a pipe line disposed between the combustion chamber and the suction port of the blower into a pipe line having a zigzag flow path, and forming the pipe line into a secondary combustion chamber;
An outer cylinder is provided around the outer periphery of the conduit, and an air passage whose one end side communicates with the suction port of the blower and whose other end side communicates with the outside air is isolated from the vaporization combustion chamber, and the outer cylinder forms the air passage. A third object of the present invention is to provide a rice husk combustion device characterized in that the other end side is connected to a mantle surrounding the outer periphery of the body of a rice husk tank, and an air intake port for the air passage is formed in the mantle. As a means to achieve this, in the rice husk combustion apparatus of the form described above, the opening at the outer end of the blower cylinder is opened to the outside air, and a control valve for adjusting the opening is provided in the opening, and the suction of the blower is A control valve is provided at the outlet of the conduit provided between the outlet and the vaporization combustion chamber to adjust its opening degree, and the control valve is controlled to open and close by a temperature sensor provided at the exhaust port of the blower. This paper proposes a rice husk combustion device.

Next, embodiments will be described in detail with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a rice husk tank, which is formed into a substantially rectangular tower shape. A supply port 10 communicating with a hopper 2 into which rice husks are fed is open at the top, and a rice husk tank 1 is located at the bottom. A discharge port 11 equipped with a shutter 3 formed in the shape of a drainboard is provided, and the lower bottom of the discharge port 11 has a discharge port 12 opened on the rear side (the right side in Fig. 1). It has become a storage section 13. A sloped wall 4 protruding downwardly from the front side wall 14 of the tank 1 toward the rear side wall 15 is installed at an intermediate portion between the top and bottom of the inner cavity of the rice husk tank 1. The lower end edge 40 of the inclined wall 4 is configured as a free end separated by a predetermined distance l from the rear aircraft wall 15. Then, rice husk M is placed in the rice husk tank 1.
When the rice husks M are thrown in, the rice husks M flow from the descending edge 40 of the inclined wall 4 to the lower part of the inclined wall 4 forming an inclined surface according to the angle of repose, and the rice husks M flow down the inclined surface (repose surface). A space is formed between the upper part of the rice husk M and the lower surface of the inclined wall 4, into which the rice husk M cannot enter. The space is formed by a rice husk M having a constant angle according to the angle of repose formed obliquely between the descending edge 40 and the inner surface of the front machine wall 14.
The resting surface m is closed off from the outside by the inclined wall 4, the front machine wall 14, and the left and right machine walls 16, 17, and this space allows the rice husks M to be burned on the resting surface m. A vaporization combustion chamber a is formed.

Reference numeral 5 denotes an air supply port for supplying combustion air to the vaporization combustion chamber a, which is located at a location near the lower end of the machine wall 14 on the front side of the rice husk tank 1 in a portion corresponding to the vaporization combustion chamber a. By arranging a small-diameter feeding cylinder 50 and having the inner end thereof penetrate the machine wall 14 and projecting into the vaporization combustion chamber a, the combustion surface of rice husks is It is formed to open into the vaporization combustion chamber a above the resting surface m, and an opening 51 on the outer end side thereof is opened to the outside air, and is opened by the operation of the blower 6, which will be described later. Air in the vaporization combustion chamber a is sucked into the suction port 60 of the gasification combustion chamber a through a pipe (secondary combustion chamber) 7, which will be described later, so that outside air is sucked in from the opening 51 at the outer end of the feed cylinder 50. The sucked outside air is configured to feed combustion air into the vaporization combustion chamber a from the air supply port 5. A regulating valve 52 that can adjust the amount of air taken in is provided in the opening 51 on the outer end side of the sending cylinder 50, and a holding cylinder 53 of the regulating valve 52 can be freely inserted into and removed from the sending cylinder 50. By removing the holding cylinder 53, the inner cavity of the feed cylinder 50 becomes a guide cylinder through which the ignition rod can be inserted into the vaporization combustion chamber a during starting.

In addition, the above-mentioned shutter 3 has a drainboard-shaped receiver 30 provided across the discharge port 11...
are attached alternately to a slidable discharge lever 31 and the rice husk tank 1, and when the discharge lever 31 is operated, the receiving bars 30 attached to the lever 31 move and are fixed to the rice husk tank 1 side. The intervals between the receiving beams 30 attached thereto are opened as discharge ports. And this receiving bar 3
0... is the air hole 32... as shown in FIG.
As described above, when the blower 6 is operated and suction pressure is applied in the vaporization combustion chamber a, air flows from the outlet 11 side through the rice husk layer as shown by the arrow in FIG. It is designed to flow into the vaporization combustion chamber a.

The pipe (secondary combustion chamber) 7 protrudes forward from the machine wall 14 at a location near the upper side of the portion corresponding to the aforementioned vaporization combustion chamber a on the front side of the machine wall 14 on the front side of the rice husk tank 1. It is formed by a cylindrical body 70 assembled so as to A cylindrical body 70 forming the pipe line 7
As shown in FIG. 2, a plurality of communication pipes 71
A partition wall 72 having... and a short cylinder 73 are alternately connected and combined while arranging the communication pipes 71 provided in the partition wall 72 at different positions to form a zigzag flow path. and a communication pipe 71 provided in the partition wall 72 located on the rear end side thereof...
is communicated with the vaporization combustion chamber a by passing through the machine wall 14 on the front side of the rice husk tank 1 described above, and furthermore, on the front surface of the partition wall 72 on the front end side, there is a hole whose diameter gradually decreases toward the front. A funnel-shaped cylindrical body 74 is connected, and the constricted opening of the cylindrical body 74 serves as an outlet 75 for the combustion gas.

8 is provided around the cylindrical body 70 and the cylindrical body 74 constituting the secondary combustion chamber (pipe line) 7, so that the air passage b communicating with the suction port 60 of the blower 6 is separated from the vaporization combustion chamber a. The rear end side of the outer cylinder is connected to the outer shell 80 provided so as to surround the body of the rice husk tank 1 in which the vaporization combustion chamber a is formed, and the front end side has the above-mentioned outer cylinder. The casing 61 of the blower 6 is removably assembled and supported so that the suction port 60 of the blower 6 connects and communicates with the inner cavity of the outer cylinder 8, and when the blower 6 is operated,
An air intake port 81 provided on the rear side of the mantle 80,
Outside air flows in from 81, and while cooling the periphery of the cylindrical body 70 forming the pipe 7, it dilutes and increases the amount of combustion gas drawn out from the constricted outlet 75 of the pipe 7. However, the hot air is discharged from the outlet 62 of the blower 6 as hot air at a predetermined temperature.

Reference numeral 9 denotes a control valve provided at the outlet 75 to adjust the temperature of the hot air by adjusting the degree of opening of the outlet 75, and controlled to open and close by a temperature sensor 90 provided at the exhaust port 62 of the blower 6. It is mandatory. In this embodiment, the temperature sensor 90 is a thermostat that utilizes the thermal expansion of liquid or gas, and the piston 9 is moved by the thermal expansion of the liquid or gas.
0a, the operation moves the operating arm 9a of the control valve 9, and the control valve 9 is moved toward the closing side due to the rise in heat, but it may be formed as appropriate. In addition, in a portion of the inner cavity of the outer cylinder 8 that surrounds the pipe line 7, as shown in FIG. A damper c consisting of a ring-shaped fixed plate 94 having window holes 93 corresponding to 91 is provided, and the rotary plate 92 is rotated by rotation of an operating rod 96 protruding from the outer surface of the outer cylinder 8. Therefore, by changing the overlapping state of the window holes 91 of the rotating plate 92 and the window holes 93 of the fixed plate 94, the amount of outside air taken in from the air intake ports 81 can be adjusted as desired. However, the temperature of the hot air can be adjusted.

The embodiment device constructed in this manner operates as follows.

Rice husk is fully charged into the rice husk tank 1 from the supply port 10, and in that state, an ignition rod is inserted from the feed pipe 50 and exposed to the vaporization combustion chamber a so as to form the bottom surface of the chamber a. When the resting surface m of the rice husk M is ignited, and the rice husk M starts to burn on the resting surface m, the discharge lever 31 is actuated (intermittently by a drive mechanism driven by a prime mover such as a motor). ), vaporization combustion chamber a
As the rice husks deposited below are sequentially discharged from the lower layer through the discharge port 11, the burning rice husks on the rest surface m become like a fire and settle down, and new rice husks M are deposited on top of them. The new rice husks are heated by the burning rice husks in the lower layer, dry distilling them and vaporizing their volatile components. When the blower 6 is operated in this state, the pressure in the vaporization combustion chamber a becomes negative, and outside air flows into the vaporization combustion chamber a from the opening 51 on the outer end side of the blow cylinder 50. As a result, the vaporized gas generated by the dry distillation of the rice husks is combusted, and the combustion gas is further combusted in the pipe 7 and is sucked toward the suction port 60 of the blower 6,
The hot air is diluted by the outside air sucked in through the air path b surrounding the air, and is then taken out from the exhaust port 62 of the blower 6 as hot air at a predetermined temperature. In the vaporization combustion chamber a, dry distillation of the rice husks continues due to the heat of the vaporized gas combusted there, and the combustion operation continues.

The combustion operation in the vaporization combustion chamber a at this time is controlled by the amount of combustion air supplied to the vaporization combustion chamber a from the air supply port 5, but the supply of combustion air is controlled by the blower 6. The combustion air is drawn into the vaporization combustion chamber a by the suction pressure that sucks the combustion gas from the vaporization combustion chamber a through the pipe line 7, and the outside air is sucked in through the feed cylinder 50. is supplied according to the combustion operation of the combustion gas which is drawn out from the vaporization combustion chamber a by the suction of the blower 6 and is actually combusted in the conduit 7 which becomes the secondary combustion chamber. By adjusting the opening degree of the outlet 75 using the control valve 9 to adjust the amount of combustion gas drawn out from the pipe 7, the combustion operation in the vaporization combustion chamber a will automatically be adjusted accordingly.

The conduit 7, which causes the combustion gas drawn out from the vaporization combustion chamber a by the suction of the blower 6 to undergo full combustion, is formed in a zigzag flow path with a constricted outlet 75. The flow resistance in the pipe 7 is specified, and the outside air for dilution flowing through the air passage b surrounding the outer periphery of the pipe 7 is controlled to a desired flow rate by the damper c provided in the air passage b. By doing so, the operation of the main combustion within this pipe line 7 is stabilized, and the cooling is stabilized, so that the temperature within the pipe line 7 is maintained constant.

Furthermore, the outside air guided through the air passage b for diluting the combustion gas drawn out from the pipe line 7 into hot air or hot air at a desired temperature surrounds the outer periphery of the body of the rice husk tank 1 from the air intake port 81. It flows into the air passage b through the mantle 80, and while flowing through the mantle 80, it is heated to a substantially constant temperature and is mixed into the combustion gas.

Further, if the hot air or warm air taken out from the exhaust port 62 of the blower 6 becomes higher than the desired temperature set by the temperature sensor 90 provided at the exhaust port 62, a control valve provided at the outlet 75 of the pipe 7 9, the opening degree of the outlet 75 is narrowed, and the amount of combustion gas drawn out from the outlet 75 is reduced.
Try to lower the temperature of the hot air or warm air being taken out. At this time, the amount of combustion air supplied to the vaporization combustion chamber a fluctuates in accordance with the change in the amount of combustion gas pulled out from the outlet 75, so that the amount of combustion air supplied to the vaporization combustion chamber a
The combustion operation within is controlled to vary accordingly.

As explained above, according to the present invention, combustion air supplied to the vaporization combustion chamber a is drawn out from the vaporization combustion chamber a by suction by the blower 6, and main combustion occurs in the pipe line 7 which becomes the secondary combustion chamber. This is carried out in accordance with the combustion operation of the combustion gas, and the flow resistance within the pipe line 7 is specified, and the air passage b surrounding the pipe line 7 is
Since the flow rate of outside air flowing through the pipe 7 can be controlled as desired, the temperature inside the pipe 7 can be accurately controlled to be constant.

In addition, outside air guided through the air path b for diluting the combustion gas drawn out from the pipe line 7 into hot air or hot air at a desired temperature is passed from the air intake port 81 to the mantle surrounding the outer periphery of the body of the rice husk tank 1. 80 and flows into the air passage b, and while flowing through the mantle 80, it is heated to a substantially constant temperature proportional to the flow velocity,
Control to keep the temperature of the outside air to be diluted constant can be performed accurately.

Furthermore, if the amount of combustion gas to be drawn out is changed by changing the opening degree of the outlet port 75 of the pipe line 7, the amount of combustion air supplied to the vaporization combustion chamber a will change depending on the amount of combustion gas pulled out from the outlet port 75. Since the temperature varies depending on the temperature, it is possible to accurately perform automatic control to keep the temperature of the hot air that takes out the combustion operation in the vaporization combustion chamber a constant.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment of the device of the present invention, FIG. 2 is an exploded perspective view of a conduit section of the same device, FIG. 3 is a longitudinal sectional side view of a receiving bar of the same device, and FIG. 4 is a longitudinal sectional side view of the same device. FIG. 5 is a partially cutaway front view of the same device, FIG. 6 is a plan view of the same device, and FIG. 7 is an explanatory diagram of the conventional means. Explanation of drawing symbols, a... vaporization combustion chamber, b... air path,
c...damper, 1...rice husk tank, 10...supply port,
11...Discharge port, 12...Outlet port, 13...Reservoir, 1
4, 15...Machine wall, 2...Hopper, 3...Shutter, 30...Receiver, 31...Ejection lever, 32...Air hole, 4...Slanted wall, 40...Descent edge, 5...Air supply port, 50... Blow cylinder, 51...Opening, 52...Control valve, 53...Holding cylinder, 6...Blower, 60...Suction port,
61...Casing, 62...Exhaust port, 7...Pipe line, 7
0... Sending pipe, 71... Communication pipe, 72... Partition wall, 73...
Cylinder, 74...Cylindrical body, 75...Outlet port, 8...Outer cylinder,
80... Mantle, 81... Air intake port, 9... Control valve, 9
a... Actuation arm, 90... Temperature sensor, 90a... Piston, 91, 93... Window hole, 92... Rotating plate, 94
...Fixed plate, M...Rice husk, m...Same resting surface.

Claims (1)

[Scope of Claims] 1. A slope that forms a space in which the rice husk input from the supply port 10 does not enter into the inner cavity of the rice husk tank 1, which is provided with a rice husk supply port 10 at the top and a discharge port 11 at the bottom. The wall 4 is shelved with an inclination angle larger than the angle of repose of the rice husk, and the descending edge 40 of the wall 4 forms a repose surface m along which the rice husk follows the angle of repose, and the inclined wall 4 A space is formed at the free end so that the rice husks flow downward and is shut off from the outside by the rest surface m of the rice husks and the inclined wall 4, and the vaporization combustion chamber a is used for the main combustion. It communicates with the suction port 60 of the blower 6 through a pipe line 7 forming a chamber, and an air supply port 5 opens into the vaporization combustion chamber a above the above-mentioned rest plane m. Sending cylinder 50
In the rice husk combustion apparatus, the gasification combustion chamber a and the suction port 6 of the blower 6
The conduit 7 disposed between the
The pipe 7 is formed into a zigzag flow passage having a jet port, and the pipe 7 is formed into a secondary combustion chamber.
An outer cylinder 8 is provided on the outer periphery of the pipe 7 and the inner periphery of the outer cylinder 8 forms one end of the suction port 6 of the blower 6.
0 and the other end communicating with the outside air is formed by blocking the vaporization combustion chamber a, and the air path b is provided with a damper c for adjusting the suction air directed toward the suction port 60. Characteristic rice husk combustion equipment. 2. A sloping wall 4 that forms a space in which the rice husks introduced from the supply port 10 do not enter is installed in the inner cavity of the rice husk tank 1, which is equipped with a rice husk supply port 10 at the top and a rice husk discharge port 11 at the bottom. The shelves are inclined at an angle of inclination larger than the angle of repose, and the descending edge 40 of the shelf is free so that the rice husks form a repose surface m according to the angle of repose and flow below the inclined wall 4. A gasification combustion chamber a of rice husks is formed with a space formed at the end thereof and is cut off from the outside by the rest surface m of the rice husks and the inclined wall 4, and the gasification combustion chamber a is connected to a pipe conduit forming the main combustion chamber. A blowing cylinder 50 is connected to the suction port 60 of the blower 6 through the air blower 7, and the air supply port 5 opens into the vaporizing combustion chamber a above the above-mentioned rest plane m.
In the combustion apparatus, the vaporization combustion chamber a and The pipe line 7 disposed between the air blower 6 and the suction port 60 is formed into a pipe line having a zigzag flow path, and the pipe line 7 is formed into a secondary combustion chamber.
An outer cylinder 8 is provided on the outer periphery of the pipe line 7 to form an air passage b, which is connected to the suction port 60 of the blower 6 at one end and communicated with the outside air at the other end, and is isolated from the vaporization combustion chamber a. A mantle 80 that surrounds the outer periphery of the body of the rice husk tank 1 on the other end side of the outer cylinder 8 that forms the path b.
A rice husk combustion device characterized in that an air intake port 81 for the air passage b is formed in the mantle 80. 3. A sloping wall 4 that forms a space in which the rice husks introduced from the supply port 10 do not enter is installed in the inner cavity of the rice husk tank 1, which is equipped with a rice husk supply port 10 at the top and a rice husk discharge port 11 at the bottom. The shelves are inclined at an angle of inclination larger than the angle of repose, and the descending edge 40 of the shelf is free so that the rice husks form a repose surface m according to the angle of repose and flow below the inclined wall 4. A gasification combustion chamber a of rice husks is formed with a space formed at the end thereof and is cut off from the outside by the rest surface m of the rice husks and the inclined wall 4, and the gasification combustion chamber a is connected to a pipe conduit forming the main combustion chamber. A blowing cylinder 50 is connected to the suction port 60 of the blower 6 through the air blower 7, and the air supply port 5 opens into the vaporizing combustion chamber a above the above-mentioned rest plane m.
In the rice husk combustion apparatus, an opening 51 on the outer end side of the blower cylinder 50 is opened to the outside air, and a control valve 52 for adjusting the opening degree is provided in the opening 51. A control valve 9 for adjusting the opening degree of the outlet port 75 of the pipe line 7 provided between the port 60 and the vaporization combustion chamber a is provided.
A temperature sensor 90 provided at the exhaust port 62 of the blower 6
A rice husk combustion device characterized by opening and closing control.