JP5393734B2 - Automatic feeder for granular fuel and combustion apparatus for granular fuel incorporating the same - Google Patents

Description

    The present invention relates to a granular material and powdery material transfer technology, and in particular, automatic fuel for fuel that enables smooth supply of granular fuel and powdery fuel to a combustion chamber such as a boiler, a stove, and a combustion furnace. From the field of providing and selling equipment and equipment necessary for its transportation, storage, assembly and installation, as well as the field of manufacturing and providing a charging device and a combustion device for granular fuel using the same, Fields that provide materials, machinery, and parts required for materials, such as wood, stone, various fibers, plastics, various metal materials, etc., electronic components incorporated in them, and control-related equipment that integrates them Fields, field of various measuring instruments, field of power equipment that moves the equipment and instruments, electric power that is the energy and the field of electricity and oil are generally called industrial machines. In addition to the fields that have been tested, researched and researched the fields, the fields related to their display, sales, import / export, general results, the results of their use, and the equipment and tools used to build them. There are no unrelated technical fields, such as the fields related to the collection and transportation of garbage waste generated by the operation of the system, the recycling field that efficiently recycles the waste refuse, and the new fields that cannot be envisaged at this time. It is about.

(Points of interest)
Growing facilities such as greenhouses and other greenhouses for greenhouses and other greenhouses, such as temperature, humidity, shading, ventilation, irrigation, fertilization, pest prevention, etc., are indispensable throughout the year. It is not an exaggeration to say that proper room temperature control in winter is the most important issue, and it has been easier to transport and handle kerosene, light oil, heavy oil, etc. Many fossil fuels suitable for automatic combustion control have been used in recent years, but in recent years, from the viewpoint of consideration for the natural environment and economic efficiency, it is possible to regenerate with the goal of using high power and moving away from fossil fuels. Although the use of energy has been encouraged and full-fledged use of wood pellets made from recycled thinned wood and wooden building waste has been sought and put into practical use, wood pellets are granular. Present Stabilization and automatic control of the fuel supply in order that there was a technical problem that it is difficult.

(Conventional technology)
Reflecting this situation, proposals that can be used to overcome this situation are not unheard of.
For example, as typified by those proposed in Patent Documents 1 (1) to 1 (5) below, wood pellets obtained by compression-molding wood into cylindrical small pieces are burned on an axial flow screw conveyor. Combustion equipment dedicated to wood pellets that can be automatically supplied to the chamber, and clogged powdery substances and high-viscosity liquid substances as seen in Patent Documents 1 (6) to 1 (9) There are some non-axial screw conveyors and pumps having a spiral power shaft that can be smoothly conveyed without being generated.

However, the combustion devices dedicated to wood pellets as shown in the former Patent Documents 1 (1) to 1 (5) are all shafts, so only wood pellets that are compression-molded to the same size and shape are used. It is effective to a certain extent for transport and supply, but other than that, wood chips containing bark and twig pieces that are not fixed in shape, and rice husks mixed with powder and grains containing shell pieces and branch pieces, etc. It is impossible to use it as fuel, and if you try to use them forcibly, there is a disadvantage that the axial flow type screw conveyor may be clogged and the fuel supply may stop. In order to make up for these drawbacks, the non-axial screw conveyors of Patent Documents 1 (6) to 1 (9) were prototyped by incorporating a conveyor that is concentrically arranged in a cylinder into a combustion device. We have repeatedly tried to check whether clogging can be prevented, but clogging occurred especially near the granular fuel introduction part at the base of the non-axial screw conveyor. It turns out that there is a problem that can not be.
(1) Japanese Patent No. 4212349 (2) Japanese Patent No. 3660295 (3) Japanese Patent Laid-Open No. 2010-25508 (4) Japanese Patent Laid-Open No. 2009-30859 (5) Japanese Patent Laid-Open No. 2008-32357 (6) Japanese Patent Laid-Open No. 2005 JP-8393 (7) JP 2006-75953 A (8) JP 2006-123134 (9) JP 2008-128089 A

(Awareness of problems)
As mentioned above, all of the previously proposed combustion devices for various wood fuels have been developed using pre-made wood-based pellets as dedicated fuel, so other wood chips, rice husks, etc. However, it has not been adopted in the combustion equipment dedicated to wood pellets until now, but it has been used for the transportation of granular materials and high-viscosity liquid substances. Combustion equipment incorporating a non-axial screw conveyor that has been put into practical use in the case of transporting wood chips, etc. whose shape is not constant due to a mixture of bark, branch pieces, etc. by long-term trial production and experimental operation by the applicant of the present application In particular, we found out that there is a fatal defect that clogging is likely to occur between the induction pipe proximal end near the wrinkle introduction part and the inner peripheral wall of the lower part of the induction pipe, Form of and solid fuels people, and their mixed fuel, without clogging, per configuration for a stable and reliable transportable, has been led to realize the importance of further improvement.

(Object of invention)
Therefore, the present invention is not limited to wood pellets molded into a fixed shape and size, and various renewable energy resources such as wood chips and rice husks that are not fixed in shape and size are inexpensive and easily available. In order to facilitate local production for local consumption, it is very quick to judge whether it is possible to develop a new automatic injection technology for granular fuel that can ensure that the automatic supply of granular fuel can be achieved reliably and smoothly. As a result of starting development and research and repeating trial and error over many years and many trial manufactures and experiments, this time, finally, an automatic injector for granular fuel with a new structure, and a combustion apparatus for granular fuel incorporating it In the following, the configuration thereof will be described in detail together with an embodiment representative of the present invention shown in the drawings.

(Structure of the invention)
As will be clearly understood from the embodiments representing the present invention shown in the drawings, the automatic injector for granular fuel according to the present invention basically comprises the following configuration.
That is, one end of a supply pipe portion having a predetermined long cylindrical straight tube shape with a predetermined inner diameter is used as a delivery end, and the opposite end to the delivery end is enlarged at the inner diameter in the centrifugal direction, like a side-rolling cup type. A funnel-shaped expansion introduction part is integrated to form an input pipe, and a fuel receiving device that is either a container type or a pipe type capable of receiving granular fuel at the rear part of the input pipe expansion introduction part. An elastic portion set to a predetermined outer diameter and a predetermined pitch slightly smaller than a predetermined inner diameter of the input pipe supply pipe section on the output shaft of the input rotary drive source disposed behind the fuel receiving section. The base end of a non-axial axial flow spiral blade made of a cylindrical coil spring made of material is connected, and the middle part of this non-axial axial flow spiral blade is "the rotation center is the inner diameter circular section of the input pipe supply pipe section Eccentric in one direction, either diagonally above or below the center of the shape, or vertically above Cities, and the inner peripheral wall surface feed tube subordinates I of this insertion unit, to which to restrict as capable of forming a margin space between the axial flow helical blades facing and running through to the turned pipe, its free front end This is an automatic feeder for granular fuel whose main point is the configuration that faces the delivery end of the supply pipe section.

(Related invention)
In connection with the above-described automatic feeder for granular fuel, the present invention also includes a combustion apparatus for granular fuel incorporating it.
In other words, from the outside of the combustion device outer body containing the combustion chamber, the tip of the supply pipe of the automatic fueling machine charging pipe for granular fuel is either horizontal or slightly inclined downward. A combustion apparatus for granular fuel, which is formed by combining an automatic charging machine for granular fuel, which is formed in a posture and penetrates and connects toward an appropriate place in the combustion chamber and forms the basis of the present invention.

    When this granular fuel combustion device is shown in a different form, a fuel hopper comprising a relay container part and a dropping pipe suspended from the relay container part is placed outside the combustion device outer body containing the combustion chamber. The lower end of the dropping pipe is penetrated and connected to an appropriate place in the combustion chamber in a downward inclined posture of 40 ° to 70 °, preferably 50 ° to 60 ° with respect to the horizontal surface, and the fuel hopper is relayed. In the upper part of the container part, the tip of the supply pipe of the automatic fuel feeder input pipe for granular fuel faces the upper end of the drop pipe in either a horizontal position or a slightly inclined position. Thus, it can be said that the particulate fuel combustion apparatus is configured by combining the automatic fuel injector for particulate fuel which forms the basis of the present invention.

    According to the automatic injection device for granular fuel having the above-described configuration, unlike the conventional one, the expanded introduction portion formed at the base end of the input pipe supply pipe portion from its new and unique configuration By this, the supply pipe part gradually guides the granular fuel that the axial flow spiral blade is stirring, and realizes remarkably smooth transfer compared to the previous one that does not have the expansion introduction part, It is possible to reliably prevent the fuel from being stopped by biting the granular fuel between the axial flow spiral blade and the rear end of the supply pipe, and molded into a fixed shape like a wood pellet. An excellent feature is that it can be guided and transferred smoothly without causing any problems even if it is not only fuel, but also fuel that mixes irregularly shaped powders and grains such as wood chips and rice husks. In addition, the cylindrical spiral wing made of elastic material In the non-shaft type made of a spring, the granular fuel eye is better than that of the conventional spiral-type spiral wing due to its flexibility and the penetrating space in the axial part. The clogging prevention effect is remarkably excellent, and the axis of rotation of the axial flow spiral blade is either obliquely above or below the center of the inner diameter circular cross section of the input pipe supply pipe part, or vertically above In the case of the conventional type which is arranged so as to be eccentric in any one direction, the granular fuel is placed between the inner peripheral wall surface of the lower side of the supply pipe and the axial flow spiral blade facing it by the action of gravity. While clogging was easy, a sufficient margin space could be formed between the inner peripheral wall surface of the feeder under the supply pipe of the charging device and the axial flow spiral blade opposed to the wall. Eliminate and make sure that it can be transported more reliably and smoothly It is intended that Xiu features is obtained that it is.

    In addition, it is assumed that the charging rotation drive source has an automatic control unit having a temperature sensor and / or a manual input unit, and is suitable for an automatic charging device for granular fuel that can freely control the rotational speed of the axial spiral blade. Therefore, the user can directly input and operate the granular fuel input amount per unit time via the manual input unit, and further, the automatic control unit can preliminarily operate based on the detected value of the temperature sensor. If the temperature is lower than the set temperature, start fuel injection or control to increase the fuel input speed. If the temperature is higher than the preset temperature, stop the fuel injection or Feedback control and / or feedforward control can be performed so as to reduce the charging speed, and safer and more efficient combustion control can be realized.

    The granular fuel combustion device combined with the granular fuel automatic charging device of the present invention is different from the conventional one, and as described above, the granular fuel automatic charging device has a unique characteristic configuration, except for wood pellets. This makes it possible to smoothly and surely transfer granular and chip-like mixed fuel such as wood chips and rice husks to the combustion chamber, and rotation of the axial spiral blades. By controlling, it becomes possible to freely change and adjust the granular fuel supply amount per unit time, intermittent time, etc., so that it can achieve excellent economic efficiency that could hardly be expected with the conventional type The effect that is said to be obtained.

    In addition, in the case of a granular fuel combustion apparatus in which a fuel hopper is interposed between and combined with the granular fuel automatic charging device of the present invention, the fuel hopper buffers the combustion chamber flame, and the granular fuel The automatic charging machine can prevent the fire from spreading to the wrinkle, and the lower end of the dropping pipe of the fuel hopper is burned in a downward inclined posture of 40 ° to 70 °, preferably 50 ° to 60 ° with respect to the horizontal surface of the ground. Since it is designed to penetrate and connect to the interior of the chamber, the granular fuel replenished to the automatic fuel injector can be dropped and supplied to the combustion chamber smoothly and quickly without staying in the fuel hopper. Therefore, it is possible to exhibit an excellent feature that a safer and more stable combustion can be obtained.

In implementing the present invention having the above-described configuration, the best or desirable mode will be described.
The injection pipe of the automatic injector for granular fuel has an axial flow spiral blade rotatably built-in, and has a function to smoothly guide and transfer the granular fuel from the base end to the tip end, with a predetermined inner diameter, predetermined One end of a long cylindrical straight pipe is used as the delivery end, and the opposite end of the delivery end is expanded in the direction of the centrifuge to expand the inner diameter in the centrifugal direction. It should be formed by integrating the parts, and the rear part of the expansion introduction part should be provided with a fuel receiving part of either a vessel type or pipe type that can receive granular fuel The expansion introduction part rolls over its inner peripheral wall surface as one of conical, spherical, ellipsoidal, other three-dimensional curved surface, polygonal pyramid, polygonal surface, and combinations thereof. It can be a cup-shaped funnel.

    The axial flow spiral blade of the automatic injection machine for granular fuel is a function that allows the granular fuel supplied to the rear fuel receiving section of the input pipe expansion introduction section to be smoothly and smoothly conveyed toward the tip of the input pipe supply pipe section. It is a spiral with a predetermined outer diameter and a predetermined pitch slightly smaller than the predetermined inner diameter of the input pipe supply pipe part, and its base end is arranged on the output shaft of the input rotary drive source arranged behind the fuel receiving part. It must be connected, and the middle part of the pipe must pass through the pipe, and the free end of the pipe should face the delivery end of the supply pipe. More specifically, as shown in the examples to be described later, it can be made of a cylindrical coil spring made of an elastic material, and the blade cross-sectional shape is circular, elliptical, oval, egg Shape, triangle, rectangle, square, parallelogram Trapezoidal, other curved, polygonal, or it may be a combinations thereof.

    The rotational drive source for charging the axial flow spiral blade has a function of enabling the axial flow spiral blade to be stably rotated at a predetermined rotational speed and rotational torque suitable for conveying granular fuel, and at least an arbitrary constant rotational speed. In addition to an arbitrary constant rotational speed, the rotational speed can be switched every predetermined time to rotate, intermittent rotation, or the rotational state can be switched appropriately to be rotationally driven. In addition, as shown in an embodiment described later, an automatic control unit and / or a manual input unit having a temperature sensor capable of detecting the temperature in the combustion chamber of the granular fuel or the temperature of the object to be heated or heated is provided. It is possible to freely control operations such as the rotational speed and intermittent rotation of the axial flow spiral blade according to the detection value of the temperature sensor, the input value set by the user, and the like.

    The automatic control unit of the rotational drive source for charging should be automatically based on various conditions such as time and temperature of the object to be heated, or follow the operation pattern set and input by the manual input unit, the operation mode selected and input, etc. However, it must have the function of automatically controlling the rotational speed of the axial spiral blade, and the power supply from the power source for the rotational drive source for input, the battery, and the amplifier must be automatically controllable. It can be composed of various control devices such as microcomputers, solid state relays, programmable logic controllers, contact relay type and contactless relay type sequencers, etc. In addition to enabling the automatic control unit to be manually controlled, the automatic control unit is manually operated. It can be a stop / startable switch, a variable resistor volume switch or a channel switch that can change the power supply to the input rotation drive source by manual input, or a button switch that can input numerical values. it can.

    The fuel receiving part of the automatic injector for granular fuel shares the function of forming an area that can temporarily store or accommodate a predetermined amount of granular fuel prior to the introduction and expansion of the input pipe, and introduce and expand the input pipe Must be either a container type or a pipe type that can surround the middle part near the proximal end of the axial spiral blade between the rotary part and the rotary drive source for charging, and is also shown in the embodiments described later As described above, it is desirable to form the granular fuel supply port at the upper part of the fuel receiving part, but various factors around the fuel receiving part such as from the left-right direction to the side, from the lower side to the upper side, or from the diagonal direction. The granular fuel can be supplied from any one of the directions.

The granular fuel combustion device receives the granular fuel from the automatic granular fuel injector, burns it safely and efficiently, and efficiently generates the heat generated by this into the air, water, oil, and other heat medium outside the combustion chamber. As a heat source that can be used in various industries, the heat generating source can be used in various industries. The tip of the supply pipe of the input pipe can be penetrated and connected to an appropriate place in the combustion chamber in either a horizontal posture or a slightly inclined posture. The lower end of the dropping pipe of the fuel hopper consisting of the dropping container adapted to hang from the outer container of the combustion device outer body containing the combustion chamber and the relay container part is placed on the horizontal surface. 40 ° to 70 ° Preferably, in a downward inclined posture of 50 ° to 60 °, it penetrates and connects to the appropriate place in the combustion chamber, and the supply pipe part of the automatic fuel injector input pipe for the granular fuel is in the upper part of the fuel hopper relay container part. For example, the tip may be incorporated so as to face the upper end of the dropping tube in either a horizontal posture or a slightly inclined posture.
In the following, the structure of the present invention will be described in detail together with an embodiment representative of the present invention shown in the drawings.

The drawings show some typical embodiments embodying the technical idea of the automatic injection device for granular fuel of the present invention and the combustion device for granular fuel incorporating the same.
It is a side view which shows the automatic feeder which drops granular fuel, and shows it in cross section. It is a side view which cuts and shows the automatic injection machine for granular fuel. It is a top view which cuts and shows the automatic injection machine for granular fuel. It is a front view which shows the eccentric arrangement example in the supply pipe part of an axial flow spiral blade from the arrow A direction of FIG. It is a front view which shows the eccentric arrangement example in the supply pipe part of an axial flow spiral blade from the arrow A direction of FIG. It is a front view which shows the eccentric arrangement example in the supply pipe part of an axial flow spiral blade from the arrow A direction of FIG. It is a side view which shows the automatic injection machine for granular fuel. It is a top view which shows the automatic injection machine for granular fuel. It is a side view which shows the automatic injection machine of a pipe type fuel receiving part in section. It is a top view which cuts and shows the automatic injection machine of a pipe type fuel receiving part. It is a side view which shows the automatic injection machine for granular fuel of a shaft axial flow spiral blade. It is a top view which shows the automatic injection machine for granular fuel of a shafted axial flow spiral blade. It is a side view which cuts and shows the combustion apparatus for granular fuel. It is a top view which shows the combustion apparatus for granular fuel partially in section. It is a front view which shows the combustion apparatus for granular fuel in section. It is a front view which cut and shows the other example of the combustion apparatus for granular fuels.

    In the example shown in FIGS. 1 to 8, one end of the supply pipe part 20 is used as the delivery end 21, and the expansion introduction part 23 is integrated with the end 22 opposite to the delivery end 21 to form the input pipe 2. In addition, a container-shaped fuel receiving portion 4 capable of receiving the granular fuel V is disposed at the rear portion of the charging pipe 2 expansion introducing portion 23, and the charging rotational drive source 5 disposed rearward of the fuel receiving portion 4. A typical embodiment of the automatic injector for granular fuel according to the present invention, in which the proximal end 30 of the axial flow spiral blade 3 is connected to the axial flow spiral blade 3 and the coaxial flow spiral blade 3 is vertically inserted into the injection pipe 2. Is shown.

As can be clearly understood from the drawings of FIGS. 1 to 8, the automatic fuel feeder 1 for granular fuel according to the present invention has a feed pipe section 20 in which the feed pipe 2 has a cylindrical straight pipe shape with a predetermined inner diameter and a predetermined length. One end of the tube is used as a delivery end 21, and a widening introduction portion 23 having a funnel shape like a roll-over type is obtained by integrating an inner diameter in a centrifugal direction with an end 22 opposite to the delivery end 21. The range including the input pipe 2 expansion introduction part 23 and the rear part of the expansion introduction part 23 is a rectangular shape with an open top surface and can receive a predetermined amount of granular fuel V. An output shaft 50 of the charging rotary drive source 5 surrounded by the volume fuel receiving portion 4 and arranged behind the fuel receiving portion 4 has a predetermined outer diameter slightly smaller than a predetermined inner diameter of the charging pipe 2 supply pipe portion 20. Of the axial flow spiral blade 3 composed of a cylindrical coil spring made of an elastic material having a diameter and a predetermined pitch. It is assumed that the end 30 is connected, and a midway portion 31 of the coaxial flow spiral blade 3 is vertically penetrated into the input pipe 2, and a free tip 32 of the axial flow spiral blade 3 is made to face the supply pipe portion 20 delivery end 21. As shown in any one of FIGS. 4 to 6, the rotational axis 3 </ b> C of the axial flow spiral blade 3 is obliquely above one of the left and right sides of the center 2 </ b> C of the inner diameter circular cross section of the supply pipe 2 supply pipe portion 20. Alternatively, it is incorporated so as to be arranged eccentrically in any one direction of vertically upward.
The dimensional difference between the outer diameter of the axial-flow spiral blade 3 and the inner diameter of the supply pipe portion 20 in FIGS. 4 to 6 is shown in an emphasized manner for easy understanding. The actual dimensional difference between the upper and lower gaps is, for example, 3 It is a slight one such as about 8 mm.

    Further, as shown in FIG. 1, in the granular fuel automatic charging machine 1, the charging rotational drive source 5 includes an automatic control unit 51 having a temperature sensor 62 and a manual input unit 52, and an axial flow spiral The number of revolutions of the blade 3 can be freely controlled, and is controlled by the automatic control unit 51 at an appropriate position of the fuel receiving unit 4 and interlocked with the operation of the input rotation driving source 5 to control the granular fuel V. The automatic fuel replenisher 6 that can supply a predetermined amount is combined.

    As shown in FIG. 9 and FIG. 10, the fuel receiving portion 4 of the injection pipe 2 for the granular fuel is connected to the rear end of the expansion introducing portion 23, and is disposed immediately before the input rotary drive source 5. It is possible to form a pipe having a constant inner diameter up to the end bulkhead 40, and to integrally form a flat rectangular funnel portion 41 on the upper portion thereof. As shown, the granular fuel automatic charging machine 1-axis flow spiral blade 3 can be replaced with a screw-type screw conveyor type.

    In the case shown in FIGS. 13 to 15, the combustion chamber 81 with a built-in combustion device outer body 80 penetrates the fuel hopper 9 dropping pipe 91 from the outside, and the fuel hopper 9 relay container portion 90 is automatically charged with granular fuel. 1 shows an example of a granular fuel combustion apparatus incorporating a granular fuel automatic charging machine 1 according to the present invention, which is formed by connecting a supply pipe portion 20 of a machine 1 charging pipe 2. The combustion device 8 includes a roll-over drum type combustion chamber 81 in the rectangular box-type combustion device outer body 80 in the range near the front end, and an open / close door 82 for the combustion chamber 81 is provided at the front center. An air circulation path space 83 is formed between the inner wall of the body 80 and the outer wall of the combustion chamber 81, and a blower fan 84 is built in the center of the top surface of the combustion apparatus exterior body 80 and immediately above the rear end of the combustion chamber 81. An intake duct 85 is erected and the combustion device exterior The air supply duct 86 is horizontally extended from the side wall near the rear end of 80, and as shown by a chain line arrow in FIGS. 13 and 15, the air is drawn into the air circulation path space 83 from the intake duct 85, and the heated air is supplied to the air supply duct. 86, and an outside air supply fan (not shown) is provided at an appropriate position on the top surface of the combustion chamber 81, and extends from the rear end of the combustion chamber 81 across the rear end wall of the combustion apparatus exterior body 80. The exhaust pipe line 87 is guided and extended to the outside through the smoke remover 88.

    As shown in FIGS. 13 to 16, the granular fuel combustion device 8 is a fuel comprising a relay container portion 90 and a dropping pipe 91 hanging from the relay container portion 90 from an appropriate position outside the combustion device outer body 80. The lower end of the dropping pipe 91 of the hopper 9 is penetrated and connected toward a proper position in the combustion chamber 81 with a downward inclination posture of an inclination angle α of 60 ° (shown in FIG. 15) with respect to the horizontal surface. In the upper portion of the fuel hopper 9 relay container section 90, the tip of the supply pipe section 20 of the automatic fuel feeder 1 for the granular fuel 1 shown in FIGS. In addition, as shown in FIGS. 13 and 14, a funnel type replenishing tank 61 is provided on the fuel receiving portion 4 of the granular fuel automatic feeder 1 as shown in FIGS. 13 and 14. Automatic control in the middle of the replenishment pipe at the lower end The automatic fuel replenisher 6 is provided in combination with an open / close valve 62 that opens and closes under the control of the control unit 51.

    As shown in FIG. 14 and FIG. 15, the fuel hopper 9 relay container 90 is automatically provided with an electromagnetic valve that is always closed by detecting this when the temperature in the relay container 90 reaches the granular fuel V ignition temperature. An automatic fire extinguishing mechanism 92 comprising a fire extinguishing sensor 93 that is urgently opened and a fire hose 94 that can pump fire water into the relay container 90 through the fire extinguishing sensor 93 is incorporated, as shown in FIG. As described above, in the granular fuel combustion device 8, the tip of the supply pipe portion 20 of the automatic injection device for granular fuel 1 with an inclined posture α of 25 ° is burned from the outside of the combustion device outer body 80. An automatic fuel replenisher 6 as shown in FIGS. 13 and 14 is incorporated on the fuel receiving portion 4 after penetrating and connecting to an appropriate place in the chamber 81.

(Operation / Effect of Example 1)
As shown in FIGS. 1 to 3, the automatic injector 1 for granular fuel according to the present invention having the above-described configuration employs a non-axial axial flow spiral blade 3 made of a cylindrical coil spring made of an elastic material, In addition, since the expansion introduction portion 23 is formed at the end portion 22 of the input pipe 2 facing the fuel receiving portion 4, it is not limited to wood pellets, and powder such as wood chips and rice husks that have been unavailable until now. As shown in FIGS. 4 to 6, the axial flow spiral blade 3 can be smoothly guided and transferred into the supply pipe 2 supply pipe section 20 without clogging the granular fuel and the granular fuel V. The rotational axis 3C of the feed pipe 2 supply pipe portion 20 is arranged either obliquely above or below the center 2C of the inner diameter circular section, or arranged eccentrically in any one of the vertically upward directions. Assembling, charging pipe 2 supply pipe section 20 inner peripheral wall bottom Since the gap between the wing and the lower edge of the axial flow spiral blade 3 is slightly wider than the other rim, further clogging is prevented and smooth and uniform conveyance is realized. It will become.

    1 includes an automatic control unit 51 having a temperature sensor 62 and a manual input unit 52. If the temperature detected by the temperature sensor 62 is lower than a preset temperature, the turning rotation drive is performed. The source 5 is started and the delivery of the granular fuel V is started as shown in the figure. If the detected temperature is higher than the preset temperature, the charging rotary drive source 5 is stopped and the granular fuel V is delivered. It is possible to automatically control to stop.

    In addition, the automatic control unit 51 shown in FIG. 1 drives the rotational drive source 5 for injection every predetermined time when the temperature detected by the temperature sensor 62 is within a preset appropriate temperature range, and makes the granular fuel V constant. When the detected temperature is lower than a preset temperature range, the rotational speed of the input rotary drive source 5 is increased and the supply amount of granular fuel V per unit time is increased. When the detected temperature becomes higher than a preset temperature range, the rotational speed of the input rotary drive source 5 is suppressed, and automatic control is performed so as to reduce the supply amount of granular fuel V per unit time. The automatic fuel replenisher 6 combined with the granular fuel automatic feeder 1 is also automatically controlled so as to stably supply the granular fuel V in conjunction with the rotational speed of the rotational drive source 5 for fuel injection. What to do That.

(Operation / Effect of Example 2)
In the case shown in FIGS. 9 and 10, the fuel receiving portion 4 following the rear end of the expansion introducing portion 23 of the automatic feeding device 1 for the granular fuel 1 is made into a cylindrical, integral, continuous type, In the case where the funnel portion 41 is formed, the granular fuel (not shown) charged into the fuel receiving portion 4 is more reliable and can be supplied between the pitches of the axial flow spiral blades 3 without waste. Thus, a more stable smooth supply of granular fuel is realized.

    As shown in FIGS. 11 and 12, the automatic injector 1 for granular fuel in which the axial-type axial flow spiral blade 3 is adopted is the same as that shown in FIGS. Compared to the granular fuel automatic loading machine 1 that uses the axial-type axial-flow spiral blade 3, it has a shaft and the cross-sectional area of the flow becomes smaller, so it can smoothly transport wood chips, rice husks, etc. that have unstable shapes. Although it is inferior in performance, the expansion introduction portion 23 of the input pipe 2 and the axial flow spiral blade 3 in the input pipe 2 as shown in FIGS. As a result, compared with the conventional screw conveyor, the occurrence rate of clogging can be remarkably reduced, which greatly contributes to the realization of stable and smooth conveyance.

(Operation / Effect of Example 3)
Further, in the case of using the granular fuel combustion apparatus 8 incorporating the automatic particulate fuel injector 1 as shown in FIGS. 13 to 15, when installed in a greenhouse greenhouse (not shown) for facility cultivation When the intake duct 85 and the air supply duct 86 are both opened to the greenhouse and the exhaust pipe 87 is led out and opened to the outside of the greenhouse, and the operation is started by supplying power. In addition, a required amount of granular fuel V is introduced into the funnel-type replenishment tank 61. Aside from this, a small amount of ignition granular fuel V is also introduced near the center of the combustion chamber 81 and ignited, and an outside air supply fan (not shown) is started. Then, after the greenhouse room air is forcibly supplied to the vicinity of the ignition point in the combustion chamber 81 to increase the thermal power, the automatic driving machine for granular fuel 1 and the rotary drive source 5 for charging and automatic fuel replenishment are provided. 6 The on-off valve 62 is activated, and the automatic control unit 51 can perform manual input operation with the manual input unit 52, and can measure the timer-type automatic control according to the input value and the greenhouse indoor temperature. It is possible to automatically control the input rotary drive source 5 and the on-off valve 67 to be interlocked by a relay, a microcomputer, or the like based on the detected value of the temperature sensor 60 installed.

    The granular fuel V (see FIG. 1) supplied from the automatic fuel replenisher 6 to the fuel receiving unit 4 of the granular fuel shown in FIGS. 13 to 15 is a small amount due to the slow rotation of the axial spiral blade 3. The fuel hopper 9 is supplied from the vicinity of the top opening of the dropping pipe 91 at the bottom of the relay hopper 9 and is dropped onto the ignition granular fuel V near the center of the combustion chamber 81 through the dropping pipe 91 set at an inclination angle α of 60 °. The dropping pipe 91 is in a steep attitude, falling smoothly, and burns one after another, and is always empty immediately after dropping the granular fuel V, preventing the spread of fire from the combustion chamber 81 to the dropping pipe 91. The combustion exhaust generated by the high temperature combustion in the combustion chamber 81 is cooled and purified through the exhaust pipe 87 and the smoke remover 88, and then exhausted into the outside air outside the greenhouse greenhouse for facility cultivation. On the other hand, FIG. 13 and FIG. 15, the blower fan 84 of the intake duct 85 is activated to forcibly supply the greenhouse indoor air to the air circulation path space 83 in the combustion device exterior body 80, Heating is performed via the wall or the exhaust pipe 87 in the combustion apparatus exterior body 80, and the warm air is forcibly circulated from the air supply duct 86 into the greenhouse.

    When the temperature inside the greenhouse exceeds a preset temperature, the temperature sensor 62 detects the temperature, and the automatic control unit 51 stops the automatic drive unit 1 for turning on the granular fuel and the automatic drive unit 5 for turning on the automatic fuel. The replenisher 6 on-off valve 67 is stopped in a closed state, and the temperature rise is automatically suppressed. At this time, in the combustion chamber 81 in which the granular fuel supply is stopped, the unburned granular fuel V is in the form of charcoal. When the temperature inside the greenhouse decreases below a preset temperature, the temperature sensor 62 detects that, and the automatic control unit 51 detects the granular fuel. Automatic charging machine 1 The rotary drive source 5 for charging is started, the automatic fuel replenishing machine 6 starts the opening / closing operation of the on-off valve 67, and the granular fuel supply is automatically restarted. When resumed, the charcoal-like embers particulate fuel V remaining in the combustion chamber 81, charged with new particulate fuel, becomes to initiate afterburning while Moeutsuri thereto.

    If the flame in the combustion chamber 81 enters the relay container 90 through the fuel hopper 9 dropping pipe 91 and spreads to an abnormally high temperature due to some cause, the automatic fire extinguishing mechanism 92 is shown. The fire extinguishing sensor 93 is urgently opened, fire water is automatically discharged through the fire hose 94, and the fire is automatically extinguished.

    In the granular fuel combustion device 8 shown in FIG. 16, the fuel hopper 9 shown in FIGS. 13 to 15 is abolished, and the tip 21 of the supply pipe portion 20 of the automatic injection machine 1 for the granular fuel 2 is changed. Directly penetrated and connected to an appropriate position in the combustion chamber 81 with an inclined posture α (25 °), and the parts are compared with those in the case where the fuel hopper 9 is mounted as shown in FIGS. The number of points can be reduced, and the manufacturing cost can be reduced. Further, although not shown, the automatic injection device for granular fuel 1 is connected to the combustion chamber 81 in a horizontal posture, and an automatic fuel replenisher is provided thereon. 6 is installed, the replenishment tank 61 of the automatic fuel replenisher 6 can be installed at a lower position, and the height for lifting the granular fuel V (not shown) from the ground to the replenishment tank 61 is reduced. Significantly reducing the labor burden of replenishment work It can be reduced.

(Conclusion)
As described above, the automatic injection machine for granular fuel and the combustion apparatus for granular fuel incorporating the same according to the present invention can achieve the intended purpose uniformly by the novel configuration, and can be easily manufactured. Compared to conventional solid fuel supply / combustion technology dedicated to wood pellets, it can be used as it is as an automatic supply fuel for boilers, stoves, etc. Also, irregularly shaped fuels such as wood chips and rice husks, which have been considered completely unusable, can be used smoothly and safely, and thinned wood and agricultural waste generated in local agriculture and forestry can be used as useful fuel for local production. It can be made extinct, and so far it has to rely on imported fossil fuels whose prices are not stable. As a result, a new supplier will be created that is advantageous to the agriculture and forestry industry, which had to spend a lot of money on industrial waste such as rice and rice husks. Furthermore, if the size and weight are further reduced, the possibility of rising utility costs will increase, and the possibility of application to heating of general households and corporate facilities that desire a friendly environment will increase. It is expected that it will be widely used and spread widely.

1 Automatic feeder for granular fuel 2 Input pipe
20 Supply pipe section
21 Same sending end
22 Same end
23 Same expansion introduction part 2C Supply pipe part inner diameter center 3 Axial flow spiral blade
30 Same base
31 Midway
32 Free tip 3C Axial flow spiral blade rotation axis 4 Fuel receiving part
40 Same end bulkhead
41 Funnel part 5 Rotating drive source for charging
50 Same output shaft
51 Automatic control unit
52 Same manual input section,
6 Automatic fuel refilling machine
60 Same temperature sensor
61 Same replenishment tank
62 On-off valve 8 Combustion device for granular fuel
80 Combustor exterior body
81 Combustion chamber
82 Same door
83 Same air circulation space
84 Same fan
85 Air intake duct
86 Air supply duct
87 Exhaust pipe
88 Smoke remover 9 Fuel hopper
90 Same relay container
91 Same pipe
92 The same automatic fire extinguishing mechanism
93 Extinguishing sensor
94 Fire extinguishing hose α Inclination angle of drop pipe 91 V Granular fuel

Claims (4)

One end of a supply pipe section of a predetermined length cylindrical straight pipe shape with a predetermined inner diameter is used as a delivery end, and at the opposite end of the delivery end, the inner diameter is expanded in the centrifugal direction, and a funnel like a horizontal roll type is used. The expansion introduction part made into a shape is integrated to form an input pipe, and a fuel receiving part that is either a container type or a pipe type capable of receiving granular fuel is provided at the rear of the input pipe expansion introduction part. A cylindrical coil spring made of an elastic material set at a predetermined outer diameter and a predetermined pitch smaller than a predetermined inner diameter of the charging pipe supply pipe section on the output shaft of the charging rotational drive source disposed behind the fuel receiving section. The axial end of the non-axial axial flow spiral blade is connected, and the middle part of the non-axial axial flow spiral blade is connected to the center of the inner diameter circular section of the input pipe supply pipe portion. It should be eccentric in one direction, either diagonally above or vertically above. Supply pipe and the inner circumferential wall surface I is subordinate vessels, to restrict as capable of forming a margin space between the axial flow helical blades facing thereto and running through to the turned pipe, supply tube portion discharge end its free tip An automatic charging machine for granular fuel, characterized by the fact that     2. The automatic for granular fuel according to claim 1, wherein the rotational drive source for charging has an automatic control unit having a temperature sensor and / or a manual input unit, and is capable of freely controlling the rotational speed of the axial flow spiral blade. Input machine. From the outside of the outer casing of the combustion device containing the combustion chamber, the tip of the supply pipe of the automatic fuel injection pipe for granular fuel is either horizontal or tilted downward. A combustion apparatus for granular fuel, which is formed by combining the automatic charging machine for granular fuel according to any one of claims 1 and 2 and penetrating and connecting toward an appropriate place in the combustion chamber. Appropriately outside the combustion apparatus exterior body containing the combustion chamber, the lower end of the dropping pipe of the fuel hopper composed of the relay container part and the dropping pipe suspended from the relay container part is 40 with respect to the horizontal surface. An automatic charging machine for granular fuel is inserted at an appropriate position in the upper part of the fuel hopper relay container in a downwardly inclined posture of 50 ° to 70 °, preferably 50 ° to 60 °, and to the appropriate position in the combustion chamber. The tip end of the supply pipe of the charging pipe is incorporated so as to face the upper end of the dropping pipe in either a horizontal position or a downwardly inclined inclination position. A combustion apparatus for granular fuel, which is formed by combining an automatic charging machine for granular fuel.

Images