JP2006078072A - Granular matter carrying mechanism and combustion device provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a granular matter carrying mechanism excellent in carrying efficiency by minimizing a trouble such as powdering of a granular matter in a connection part between a horizontal carrying part and a vertical carrying part for transferring the granular matter, or clogging involved thereby. <P>SOLUTION: The granular matter carrying mechanism 1 includes a substantially cylindrical horizontal carrying part 2 substantially horizontally pushing out and carrying a pellet-like or massy granular matter such as solid fuel, sediment, or grain by rotation of a carrying shaft 4 having a rotating blade 3 provided on a circumferential surface thereof, a vertical carrying part 5 having a lower end connected to the upper surface of the horizontal carrying part, and carrying the granular matter such as solid fuel while changing the direction from the horizontal direction to a vertically upward direction, and a reversely rotating blade 6 concentrically formed on a circumferential surface of the carrying shaft 4 on the downstream side from just under the lower end center of the vertical carrying part 5 in a reverse screw shape in opposition to the rotating blade 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a granular material transport mechanism for transporting granular materials such as solid fuel obtained by crushing wood, coal, plastic waste, etc., and granular materials for transporting and burning solid fuel and heating water and steam by the combustion heat. The present invention relates to a combustion apparatus provided with a transport mechanism.

  Conventionally, this kind of granular material conveyance mechanism and a combustion apparatus equipped with the same supply solid fuel on the rooster through the granular material conveyance apparatus and burn it on the rooster. Accompanying this combustion, solid fuel ash, unburned matter, and the like adhere to the rooster, and ash fall from the rooster and the flow of combustion air are hindered. In order to burn solid fuel effectively, a method is adopted in which a great-type rooster is moved up and down or back and forth. Thereby, the incineration residue is separated by stirring the fire layer of the solid fuel, and the incineration ability is improved by improving the ventilation from the lower surface of the rooster.

For example, Patent Document 1 discloses a horizontal screw feeder, a vertical screw feeder, and a granular material conveying mechanism that supplies such a granular material such as solid fuel from the horizontal direction and pushes it upward in the vertical direction toward the top of the rooster. A lower connecting casing having an L-shaped conveying path is provided at the connecting portion of the lower end, and a centrifugal blade is disposed at the tip of the horizontal screw feeder in the lower connecting casing, and the centrifugal blade and the vertical screw are placed in the casing. A granular material conveying device such as glutinous rice and beans arranged to face the lower end of the spiral of the feeder is described.
Further, in Patent Document 2, a fixed rooster that is inclined downward as it reaches the front and a moving rooster that slides along its tip side are disposed in front of the outlet of a transport mechanism that transports solid fuel such as wood chips. A wood chip combustion apparatus is described in which wood chips are burned on the upper surface of the rooster.
JP 2000-287532 A JP 58-78011 A

However, the conventional granular material conveying apparatus and combustion apparatus have the following problems.
(A) Since the granular material conveying apparatus described in Patent Document 1 requires a vertical rotating shaft that is driven in a direction perpendicular to the horizontal rotating shaft for conveying the granular material, the overall mechanical configuration is complicated and maintenance is performed. In addition to the deterioration of the property and economy, there is a problem in that excessive crushing force acts at these joints and the granular material is pulverized to easily cause variations in combustion characteristics and transportability.
(B) By omitting such a vertically placed screw feeder, the granular material is conveyed in the horizontal direction by a cylindrical screw feeder, and when its proximal end is bent into an L shape and pushed upward L, Solid fuel such as wood pellets, which are deformed and pulverized due to humidity such as in summer, is pressed and fixed to the L-shaped bent portion, and the flow of the solid fuel is inhibited. For this reason, there is a problem that an excessive load is applied to the fuel conveyance unit, and the conveyance screw for extruding the solid fuel is easily deformed and damaged.
(C) In the combustion apparatus described in Patent Document 2, since the substantially rectangular rooster is inclined and disposed in one direction, the solid fuel continuously supplied onto the rooster is uniformly distributed along the extending direction of the rooster. There is a case where it is difficult to burn, and there is a problem that the combustion processing efficiency is deteriorated.
(D) Once the unburned matter and ash after combustion adheres to the rooster, it is difficult to reliably remove them unless the moving rooster is slid over the entire surface of the fixed rooster. There was a problem of lack of maintenance and economy.
(E) Since the conventional moving rooster reciprocally slides on the fixed rooster, once the vitrified ash is fixed in the form of a clinker, the removal efficiency is lowered and the drive mechanism is complicated and downsized. There was a problem that it was difficult to remove.

  The present invention has been made in order to solve the above-described conventional problems, and causes troubles such as powdering of particulate matter at the connection portion such as a substantially L shape between the horizontal conveyance portion and the vertical conveyance portion, and blockage associated therewith. In addition to providing a transport mechanism with excellent transport efficiency, the solid fuel is stably supplied onto the rooster through such a transport mechanism, and it is uniformly burned so that it has excellent combustibility, controllability and maintainability. It aims at providing the combustion apparatus provided with the thing conveyance mechanism.

(1) The granular material conveying mechanism of the present invention made to solve the above-mentioned problems is a conveying shaft in which swirl vanes are provided on the peripheral surface of pellets or massive granular materials such as solid fuel, earth and sand, and grains. A substantially cylindrical horizontal transport unit that pushes and transports in a substantially horizontal direction by rotation, and a lower end thereof is connected to the upper surface of the horizontal transport unit, and transports the granular material from a horizontal direction to a vertically upward direction. It is comprised so that it may have a vertical conveyance part and the reverse swirl | wing blade coaxially formed by the reverse screw in the surrounding surface of the said conveyance shaft which is downstream from the lower end center of the said vertical conveyance part facing the said swirl | wing blade. .

(2) A combustion apparatus provided with the granular material transport mechanism of the present invention is a combustion apparatus that transports and burns granular materials made of solid fuel such as wood chips and coal using the granular material transport mechanism of (1). And it has the rooster part provided in the upper end of the said vertical conveyance part, and the said solid fuel is raised to the rooster surface and burned.

(3) In the combustion apparatus provided with the granular material transport mechanism according to the present invention, in (2), the combustion chamber for generating the solid fuel combustion gas by incorporating the rooster portion so that it can be taken in and out, and the combustion gas And a smoke pipe section that is supplied to the cylindrical gas flow path and exchanges heat with the gas and water flowing around the outside and discharged to the outside.

(4) In the combustion apparatus provided with the granular material transport mechanism of the present invention, in (2) or (3), the rooster section is a substantially conical fixed rooster attached to the upper end side of the vertical transport section; A rotating rooster that is rotatably provided with a gap above the fixed rooster, and a rooster rotating mechanism that rotates the rotating rooster can also be provided.

(5) In the combustion apparatus equipped with the granular material transport mechanism of the present invention, in each of (2) to (4), each supply of the solid fuel supplied to the rooster and the combustion air supplied to the combustion chamber An automatic operation control unit that controls the amount based on a detection signal of a thermosensor provided in the combustion chamber or the granular material transport mechanism and maintains the solid fuel on the rooster in a combustion state is provided.

  According to the granular material transport mechanism of the present invention, a substantially cylindrical horizontal transport unit that transports the granular material by pushing it in a substantially horizontal direction by rotation of a transport shaft provided with swirl vanes on its peripheral surface, and the horizontal transport unit A vertical conveying section that is provided with its lower end connected to the upper surface of the sheet and changes the direction of the granular material from a horizontal direction to a vertically upward direction, and a periphery of the conveying shaft that is downstream from directly below the lower center of the vertical conveying section. Since the surface has a reverse swirl blade that is coaxially formed with a reverse screw so as to face the swirl blade, the flow of the particulate matter is efficiently changed from the horizontal direction to the vertical direction at the connecting portion of the horizontal transport unit and the vertical transport unit. It is possible to provide a granular material transport mechanism that is excellent in maintainability without causing pulverization of the granular material or powder clogging associated with such pulverization.

  According to the combustion apparatus provided with the granular material conveying mechanism of the present invention, the granular material made of solid fuel such as wood chips and coal is conveyed using the granular material conveying mechanism, and the upper end of the vertical conveying portion of the granular material conveying mechanism. It is also possible to provide a solid-state fuel that is raised and combusted on the surface of the rooster, so that the solid fuel can be stably supplied onto the rooster and uniformly burned. It is excellent in controllability and can be a combustion apparatus. That is, by rotating the transport shaft of this transport mechanism and pushing up the solid fuel from the back side of the rooster, the solid fuel is raised on the upper surface of the rooster, so the flow of the solid fuel that passes through the opening of the rooster Thus, ash, unburned ash, vitrified ash, and the like are not attached to and clogged with the opening, and the flammability can be kept constant at all times. In this way, maintenance for cleaning the rooster can be omitted. In addition, the rooster part and the fuel transfer part can be configured independently of the combustion chamber, so that the solid fuel can be burned by inserting the rooster part into various types of combustion devices such as boilers. Is also excellent.

  In addition, according to the combustion apparatus equipped with the transport mechanism of the present invention, a combustion chamber for generating a combustion gas of the solid fuel by incorporating a rooster portion so as to be put in and out, and the combustion gas is supplied to the cylindrical gas flow path. In addition, it is possible to provide a smoke pipe part that is heat-exchanged with gas and water flowing around the outside and discharged to the outside, so that combustion heat in the rooster part can be efficiently recovered, and heat recovery is excellent, The rooster part is pulled out of the combustion chamber and can be easily cleaned and maintained in a wide space, so it has excellent maintainability.

  Furthermore, according to the combustion apparatus provided with the transport mechanism of the present invention, the rooster part rotates with a substantially conical fixed rooster attached to the upper end side of the vertical transport part and a gap above the fixed rooster. It can also be provided with a rotating rooster that is freely arranged and a rooster rotating mechanism that rotates the rotating rooster, and the combustion ash grows and sticks to a certain size or larger on the rooster portion. And the solid fuel combusted on the rooster portion can be maintained stably and properly at all times.

  According to the combustion apparatus provided with the transport mechanism of the present invention, it is possible to provide an automatic operation control unit that maintains the solid fuel on the rooster in a predetermined combustion state. Since continuous operation is possible, continuous operation such as the start of medium-term operation can be performed easily and safely, and its operating efficiency can be greatly improved.

(Embodiment 1)
FIG. 1 is a schematic explanatory view of the granular material transport mechanism according to the first embodiment.
In FIG. 1A, 1 is a granular material transport mechanism of the first embodiment, 2 is a pellet or lump of granular material supplied through the granular material supply port 2a, and a swirl vane 3 is provided on the peripheral surface thereof. The horizontal transport unit 5 formed in a substantially cylindrical shape that is pushed and transported in a substantially horizontal direction by the rotation of the transport shaft 4 is connected to the upper surface on the base end side of the horizontal transport unit 2 with its lower end connected in a substantially L shape. A vertical conveyance unit 6 formed in a substantially cylindrical shape for changing the direction of a solid fuel and the like from a horizontal direction to a vertical upward direction, and 6 is a conveyance downstream from a position directly below the lower end center of the vertical conveyance unit 5. A reverse swirl vane formed coaxially with a reverse screw on the peripheral surface of the shaft 4 so as to face the swirl vane 3, and a shaft drive provided with an electric motor, a transmission, and the like for rotating the conveyance shaft 4 at a predetermined rotation speed Part.

As shown in the figure, the entire horizontal conveyance unit 2 is formed in a substantially cylindrical shape by a metal material such as stainless steel or steel, and a conveyance shaft 4 rotated through a shaft driving unit 7 provided with an electric motor or the like is the center. Is provided. The granular material introduced from the granular material supply port 2 a on the base end side of the horizontal conveying unit 2 is pressure-fed in the horizontal direction by the swirling blades 3 of the conveying shaft 4. A reverse swirling blade 6 having a reverse screw shape with respect to the swirling blade 3 is formed on the peripheral surface of the conveying shaft 4 at a joint portion with the vertical conveying portion 5 formed in a substantially L shape downstream of the conveying shaft 4. ing. In accordance with the rotation of the conveying shaft 4, the granular material in which the internal granular material moves in the horizontal direction in each of the portion where the swirl blade 3 is formed and the portion where the reverse swirl blade 6 is formed, respectively. The flow is formed. These granular materials are pushed upward through a vertical conveying unit 5 arranged with a lower end connected above the flow confluence. The reverse swirl vane 6 and the swirl vane 3 formed in a spiral shape only need to have a reverse screw relationship with each other. The pitch interval, the size of the vane, and the length on the conveyance shaft are sufficient. May be different depending on the shape and size of the connecting portion formed in an L shape or a curved shape.
Since the granular material transport mechanism 1 has the swirl blade 3 and the reverse swirl blade 6 that are coaxially formed on the transport shaft 4, the horizontal transport unit 2 and the vertical transport unit 5 can be formed into an L shape simply by driving the transport shaft 4. By changing the flow from the horizontal direction to the vertical direction without stagnation of the flow of the granular material at the connection part formed in a curved or curved shape, the pellets and massive particles such as solid fuel, earth and sand, and grains are efficiently Can be conveyed.

  FIG. 1B shows a first modification of the granular material transport mechanism according to the first embodiment. As shown in the drawing, the granular material transport mechanism 1 ′ of the first modification example causes the reverse swirl blade 6 formed on the transport shaft 4 of the horizontal transport unit 2 to protrude downstream, and the swirl blade 3 and the reverse swirl blade 6. Is located immediately below the center of the lower end of the vertical conveying unit 5. As a result, the shape of the reverse swirl vane 6 and the like can be simplified as compared with the joint portion formed in the L shape, and a granular material transport mechanism excellent in economic efficiency and maintainability can be obtained.

  FIG. 1C shows a second modification of the granular material transport mechanism according to the first embodiment. In the granular material transport mechanism 1 ″ of the modification example 2, the granular material supply ports for supplying the granular material are provided on the left and right of the horizontal transport unit 2, respectively, and the swirl blade 3 and the reverse swirl blade formed on the transport shaft 4 so as to face each other. The base end side of the vertical transport unit 5 is arranged above the boundary with the horizontal transport unit 6. Thereby, the granular material supplied from both the left and right sides of the horizontal transport unit 2 is joined to the vertical transport unit 5. The granular material can be transported uniformly and stably without being stagnated or blocked by the granular material.

  As described above, the granular material transport mechanism 1 according to the present embodiment arranges the swirl vanes in a reverse screw relationship on the transport shaft in the horizontal transport unit so as to face each other, and above the boundary between the left and right swirl blades. The gist of the present invention is that a connecting portion with the vertical conveying portion is formed. This makes it possible to supply particulates from the horizontal transport unit to the vertical transport unit in an efficient and stable manner by changing the direction of the solid material, and pulverizing wood, coal, plastic waste, etc. Moreover, it can apply widely as a conveyance machine which conveys granular materials, such as earth and sand and grains.

(Embodiment 2)
2 is a cross-sectional view of a combustion apparatus provided with a granular material transport mechanism according to Embodiment 2 of the present invention, FIG. 3 is an enlarged cross-sectional view of the rooster portion and the granular material transport mechanism, and FIG. 4 is a rooster portion. FIG.
2 to 4, reference numeral 10 denotes a combustion apparatus provided with the granular material transfer mechanism according to the first embodiment, and reference numeral 11 denotes a wooden pellet fuel that is a granular material, which is horizontally transferred by the rotation of the transfer shaft 4 of the horizontal transfer unit 2. And a granular material conveying mechanism 12 for extruding vertically upward by the vertical conveying portion 5 provided on the base end side thereof, and 12 is a fuel of the vertical conveying portion 5 formed by opening vertically upward from the distal end side of the conveying shaft 4. The discharge part 13 is attached to the fuel discharge part 12 and the wood pellet fuel is pushed up through the opening 13a, and is raised on the rooster surface 13b to be burned. A combustion chamber 15 for generating a combustion gas of fuel, water and heat flowing through the outer periphery of the pipe pipe 15a when the combustion gas is supplied to the pipe pipe 15a forming the cylindrical gas flow path A smoke pipe part that is discharged to the chimney part 16 via the lower ash reservoir part 15b, 17 is a fuel hopper that is connected to the fuel transfer part 11 and stores wood pellet fuel, and 18 is a lower part of the rooster part 13. It is a blower for sending the combustion air which burns solid fuel. The granular material transport mechanism 11 of the second embodiment is opposed to the swirling blade 3 formed on the transport shaft 4 and the end of the swirling blade 3 in substantially the same manner as the granular material transport mechanism 1 of the first embodiment. The reverse swirl vane 6 is formed. Those having the same functions as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 3, the granular material transport mechanism 11 is fixed to the front side of the transport shaft 4 inside the horizontal transport unit, and the solid fuel that is agglomerated and fixed to the lower part of the fuel discharge unit 12 by the rotation thereof is opposite to the transfer direction by the swirl blade 3. And a reverse swirl vane 6 for pushing back in the direction, and the front is bent and attached upward to a transport shaft 4 that is arranged to protrude from the cylindrical casing of the horizontal transport unit 2. The rod-shaped rotating body 21 for intermittently hitting the protrusion 13c around the rooster portion whose tip portion is formed in a cylindrical shape to apply horizontal rotational force to the rooster portion 13 and the conveying shaft 4 are rotationally driven. An electric motor 22, a base portion 23 that integrally supports the rooster portion 13 and the transport shaft 4, the fuel hopper 17, and the blower 18, and a lost portion provided at the bottom of the base portion 22. Wheel 24 for advancing and retracting the part 13 through the opening of the combustion chamber 14 side walls, and a thermo sensor 25 for measuring the temperature in the horizontal conveying section 2.

Fig.5 (a) is sectional drawing of a rooster part, FIG.5 (b) is the front view.
As shown in FIGS. 3 and 5, the rooster portion 13 includes a base 12 a attached to the fuel discharge portion 12 that opens upward on the front side of the vertical transport portion 5, and is fixed on the base 12 a and solid fuel is pushed up. A substantially conical fixed rooster 13d having an opening 13a passing therethrough, and a rotating rooster 13e that is rotatably mounted on the fixed rooster 13d.
Thus, by operating the electric motor 22, the protrusion 13c provided at the lower portion of the rotating rooster 13e is hit at the tip of the rod-shaped rotating body 21, and the rotating rooster 13e is rotated impactively with respect to the fixed rooster 13d. Can be made. In this way, it is possible to improve the contact ventilation state with the combustion air while mixing and stirring the combustion ash layer and the unburned layer of the solid fuel in the shape of the rooster 13 so that the solid fuel can be burned efficiently. It has become.

The operation of the combustion apparatus 10 having the granular material transport mechanism according to the second embodiment of the present invention configured as described above will be described with reference to the drawings.
First, a predetermined amount of wood pellet fuel is stored in the fuel hopper 17 in advance, the electric motor 22 is activated to rotate the transport shaft 4, and the wood pellet fuel supplied from the bottom of the fuel hopper 17 is fed along the transport shaft 4. Extrude horizontally. As a result, the lower vertical conveying unit 5 is maintained in a state filled with the wood pellet fuel from the rooster portion 13 and the combustion air blower 18 is operated to convert the wood pellet fuel pushed up to the upper portion of the rooster portion 13 into the wood pellet fuel pushed up. Ignition is performed, and the combustion operation in the combustion apparatus 10 is started.

  In this manner, the wood pellet fuel is pushed up onto the rooster portion 13 at a predetermined fuel supply speed, and the rotary rooster 13e is intermittently rotated on the rooster portion 13 to be in contact with the combustion air and continuously burned. Then, the combustion gas generated in the combustion chamber 14 is supplied to the cylindrical gas flow path of the smoke tube portion 15, and the amount of heat of the combustion gas is added to the water or steam supplied to the smoke tube portion 15 to be heated. it can.

As shown in FIG. 6 (a), when the wood pellet fuel is transported in the horizontal transport section 2, the wood pellet fuel is pushed out in the horizontal direction by the transport shaft 4, and the horizontal transport of the granular material transport mechanism 11 is performed. The direction of flow is changed upward at the end of the section and pushed up to the vertical transport section 5. At this time, if no reverse swirl vane is provided opposite the swirl vane, as shown in FIG. 6 (b), the transport shaft at the bottom corner changes the direction of flow of the wood pellet fuel from the horizontal direction to the vertical upward direction. The wood pellet fuel crushed with the rotation of 4 is easily fixed. In the combustion apparatus 10 having the granular material conveying mechanism of the second embodiment, the reverse swirl vane 6 is disposed at the bottom corner and rotates on the conveying shaft 4 in synchronism with the swirl vane 3. It is possible to scrape the wood pellet fuel that is to stay or adhere to the bottom corner and discharge it from the vertical transport unit 5 toward the upper fuel discharge unit 12.
Thus, in the combustion apparatus 10, it is possible to prevent ash, unburned ash, vitrified ash, and the like from adhering to the opening 13a and the grate due to the flow of the solid fuel passing through the opening 13a of the rooster. This fuel has excellent combustion retention, and even if the fuel is slightly pulverized by the reverse swirl vane 6, the agglomerates can be efficiently crushed and smoothly pushed up to the upper rooster part 13. Therefore, it is possible to prevent the conveying shaft 4 from being broken or deformed due to an excessive force.

(Embodiment 3)
FIG. 7 is a flowchart showing an automatic operation program applied to the combustion apparatus provided with the granular material transport mechanism in the third embodiment. Note that the automatic operation program according to the third embodiment is applied to the combustion apparatus 10 including the granular material transport mechanism according to the second embodiment. Below, the case where it applies to the combustion apparatus 10 is demonstrated.
That is, the automatic operation program detects the supply amount of the solid fuel supplied to the rooster portion 13 and the combustion air supplied to the combustion chamber 14 by a detection signal of a thermosensor provided in the combustion chamber 14 or the granular material transport mechanism 11. The solid fuel on the rooster portion 13 is maintained in the combustion state. Thereby, the continuous operation of the wood pellet fuel can be easily and safely performed, and the operating efficiency of the combustion apparatus 10 can be improved.
In this automatic operation program, the drive motor of the granular material transport mechanism 11 and the blower of combustion air are stopped by a digest signal from a control unit that controls a combustion apparatus such as a boiler. In this way, the solid fuel is extinguished, a seed flame is left in the center of the rooster, and when an ignition signal is sent after a lapse of a predetermined time, the drive motor of the granular material transport mechanism 11 and the blower of combustion air are operated to burn the solid fuel and the combustion Industrial air is supplied to the rooster, and the solid fuel is ignited by this seed fire. By repeating this, the combustion apparatus 10 is operated.

Hereinafter, the automatic driving program will be described more specifically with reference to FIG.
(A) First, the power switch 40 is turned on, the water level leveler 41, the current limiter 42, the boiler thermostat 43, the seismic device 44, the seed fire maintenance cycle timer 45, the seed fire maintenance combustion connected to the control unit of the combustion device 10 The timer 46, the backfire thermostat 47, the unignited thermostat 48, the unignition detection timer 49, and the indicator lights 50 and the buzzer are set in a standby state. The power switch 40 is always “ON” except when the combustion apparatus 10 is not used for a long period of time.
(B) The operation switch 40a is set to the operation mode (ON) to start automatic operation for switching operation modes such as “burning” and “fire extinguishing” below.
During “burning”: the fuel feed motor, blower motor, and exhaust fan motor operate simultaneously.
"Fire extinguishing": The fuel feed motor stops, and after 3 minutes the blower motor and exhaust fan motor stop.
At the time of “5 minutes combustion”: The set time of the seed fire maintenance combustion timer (5 minutes) After the combustion, it becomes “fire extinguishing” and returns to the setting of the seed fire maintenance cycle timer.
The seismic sensing device 44 is a device for detecting vibration at the time of the occurrence of an earthquake and turning off the power of the combustion device 10 to stop its operation, thereby further improving safety.

(Embodiment 4)
Hereinafter, an operation method of the flashback prevention unit that is applied to the combustion apparatus 10 including the particulate matter transport mechanism according to the second embodiment and controlled via the flashback prevention operation program loaded in the control unit of the combustion apparatus 10 will be described. explain.
As shown in FIG. 2, the backfire prevention unit applied to the combustion apparatus 10 of the third embodiment includes a thermosensor 25 that detects the upstream end temperature of the conveyance shaft 4 in the granular material conveyance mechanism 11, and a thermosensor 25. An electric motor 22 that drives the conveying shaft 4 at a predetermined rotational speed when the temperature detected in (1) is equal to or higher than a specified temperature (for example, 50 ° C.), a blower 18 for sending combustion air to the lower part of the rooster part 13, And a control unit for controlling them. As a result, when the combustion apparatus 10 is in a resting state or the like, it is detected by the thermosensor 25 that the seed fire on the rooster section 13 has moved in the horizontal transport section 2, and the solid fuel is pushed up to the rooster section 13 side. The movement of fire can be prevented, and the safety of the combustion apparatus 10 can be further enhanced.

(A) It is a schematic cross section of the granular material conveyance mechanism which concerns on Embodiment 1 of this invention. (B) It is a schematic cross section of the example 1 of a change in the same granular material conveyance mechanism. (C) It is a schematic cross section of the example 2 of a change in the same granular material conveyance mechanism. It is sectional drawing of the combustion apparatus provided with the granular material conveyance mechanism which concerns on Embodiment 2 of this invention. It is an expanded sectional view of the rooster part and granular material conveyance mechanism of the combustion apparatus. It is a disassembled perspective view of the rooster part of the combustion apparatus. (A) It is sectional drawing of the combustion apparatus rooster part. (B) It is the front view. (A) It is explanatory drawing which shows the supply state of solid fuel. (B) It is explanatory drawing which shows the supply state of the solid fuel in the conventional combustion apparatus. 6 is a flowchart of a combustion apparatus automatic operation program according to a third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Granular substance conveyance mechanism of Embodiment 1 1 'Granular substance conveyance mechanism of transformation example 1 1 "Granular substance conveyance mechanism of transformation example 2 2 Horizontal conveyance part 2a Granular substance supply port 3 Swirling blade 4 Conveyance shaft 5 Vertical conveyance part 6 Reverse swirl vane 7 Shaft drive unit 10 Combustion device provided with granular material conveyance mechanism of Embodiment 2 11 Granular material conveyance mechanism 12 Fuel discharge unit 12a Base 13 Rooster portion 13a Opening portion 13b Rooster surface 13c Protrusion portion 13d Fixed rooster 13e Rotation Rooster 14 Combustion chamber 15 Smoke pipe section 15a Pipe piping 15b Ash accumulation section 16 Chimney section 17 Fuel hopper 18 Blower 21 Rod-shaped rotating body 22 Electric motor 23 Base section 24 Wheel 25 Thermo sensor 40 Power switch 40a Operation switch 41 Water leveler 42 Current limiter 42 Ter 43 boiler thermostat 44 seismic device Five fire maintained cycle timer 46 or fire kept burning timer 47 backfire thermostat 48 Not ignition thermostat 49 Not ignition detection timer 50 indicator

Claims (5)

  A substantially cylindrical horizontal transport unit that transports pellets or lump particles such as solid fuel, earth and sand, and the like by pushing the transport shaft provided with swirl vanes on the peripheral surface thereof in a substantially horizontal direction, and the horizontal A vertical conveying unit that is provided with its lower end connected to the upper surface of the conveying unit and that changes the direction of the granular material from a horizontal direction to a vertical upward direction, and the conveying shaft that is downstream from directly below the lower center of the vertical conveying unit. And a reverse swirling blade formed coaxially with a reverse screw so as to face the swirling blade.   A combustion apparatus comprising a granular material conveying mechanism for conveying and burning granular material made of solid fuel such as wood chips and coal using the granular material conveying mechanism according to claim 1, wherein A combustion apparatus provided with a granular material transport mechanism, characterized in that it has a rooster part that is provided and is burned by raising the solid fuel on its rooster surface. A combustion chamber in which the rostral portion is detachably incorporated to generate combustion gas of the solid fuel, and the combustion gas is supplied to the cylindrical gas flow path and heat-exchanged with gas and water flowing in the outer periphery to the outside. A combustion apparatus having a granular material transport mechanism according to claim 2, further comprising: a smoke pipe section that is discharged. The rooster portion is a substantially conical fixed rooster attached to the upper end side of the vertical conveying portion, a rotary rooster that is rotatably disposed with a gap above the fixed rooster, and rotates the rotary rooster. A combustion apparatus having a granular material transport mechanism according to claim 2, wherein the combustion apparatus has a rooster rotation mechanism. Control each supply amount of the solid fuel supplied to the rooster and the combustion air supplied to the combustion chamber based on a detection signal of a thermosensor provided in the combustion chamber or the granular material transport mechanism, The combustion apparatus provided with the granular material transport mechanism according to claim 3 or 4, further comprising an automatic operation control unit that maintains solid fuel on the rooster in a predetermined combustion state.

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