JPH0614729U - Small garbage furnace - Google Patents

Abstract

(57) [Abstract] [Purpose] Despite its simple, compact and well-structured structure, it is possible to incinerate and reduce bulky cellulosic waste such as paper scraps and rags without generating unburned residue, smoke, or dust. The aim is to provide a highly practical small garbage furnace that can be installed and used not only in densely populated areas but also in offices. [Structure] A box-shaped furnace body 1 having a heat-resistant structure is provided with an outer cylinder 2 standing upright, and an inner cylinder 3 is inserted and fixed with a gap between the inner cylinder 3 and the outer cylinder 2 so as to have a double structure. To form a gas combustion chamber B, and the box-shaped furnace body 1 at a position separated from the outer cylinder 2.
A dust collecting outer cylinder 6 in which a dust collecting inner cylinder 6a extending outside the box-shaped furnace body is concentrically arranged is erected therein, and a tangential direction portion between the dust collecting outer cylinder 6 and the outer cylinder 2 is located in an exhaust gas duct. Connect by 7,
Further, the blower 8 is arranged in the box-shaped furnace body 1, and the pushing pipe 8b of the blower 8 is inserted into the dust collecting inner cylinder 6a, while the intake pipe 8a is opened into the furnace body to suck the atmosphere in the furnace body. I decided to do it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a small garbage furnace that can be installed indoors.

[0002]

[Prior art and its technical problem]

 The amount of waste is increasing irrespective of whether it is a living or an industrial type, and the amount of paper discharged from various business establishments in urban areas is rapidly increasing. For example, in Tokyo in 1989. About 4.9 million tons, an increase of 1 million tons compared to 1985. Up until now, most of the cellulosic wastes have been disposed of in landfills, but the limits of landfills are very close, and the secondary pollution and environmental damage caused by landfills frequently occur. ing. Moreover, since landfilling is mostly done in depopulated areas, the cost has risen sharply, and the cost has become a heavy burden and is becoming deeper. In particular, papers are often shredded into shredders for confidentiality, which makes them extremely bulky and requires a large space for storage before being collected and transported for processing.

As a countermeasure against this, a process of reducing bulky cellulose-based waste such as paper scraps and rags at the place of generation thereof, especially incineration is suitable. However, conventional incinerators generate smoke, dust, odors, etc. due to incomplete combustion in small-sized ones, and their structure and mechanism are complicated, large, heavy, and dedicated to incinerating to control these. It requires personnel and therefore the cost is high as a whole, and it was not possible to easily perform the incineration treatment without pollution.

The present invention was devised to solve the above-mentioned problems, and its purpose is to provide a bulky cellulosic material such as paper scraps and rags while having a simple, compact and well-structured structure. It is possible to reduce the amount of incinerated waste by incineration without producing unburned residue, smoke or dust, and to provide a highly practical small garbage furnace that can be installed and used not only in densely populated areas but also in business offices. is there.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has an outer cylinder 2 standing on a box-shaped furnace body 1 having a heat-resistant structure, and an inner cylinder 3 having a charging port in the upper part and a roster 3b in the lower part between the outer cylinder 2 and the outer cylinder 2. A gasification chamber A and a gas combustion chamber B having a double structure are formed by inserting a space in the box-shaped furnace body 1 at a position separated from the outer cylinder 2, and a box-shaped furnace The dust collecting outer cylinder 6 in which the dust collecting inner cylinder 6a extending outside the body is concentrically arranged is erected, and the tangential portion of the dust collecting outer cylinder 6 and the outer cylinder 2 is connected by an exhaust gas duct 7. The blower 8 is arranged in the box-shaped furnace body 1, and the pushing pipe 8b of the blower 8 is inserted into the dust collecting inner cylinder 6a, while the intake pipe 8a is opened in the furnace body to suck the atmosphere in the furnace body. The configuration adopted is adopted.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a first embodiment of the present invention. Reference numeral 1 denotes a box-shaped furnace body, in which four side plates 1a made of heat-resistant steel plate, a bottom plate 1b and a top plate 1c are assembled by a frame material, and a heat insulating material 1d made of felt or the like is stretched inside. Casters 1e are attached to the bottom plate 1b and are movable. A slit-shaped or independent hole-type through hole 10 communicating with the furnace internal space is formed in the lower end region of the side plate 1a. Reference numeral 2 denotes an outer cylinder which is erected on one side in the box-shaped furnace body 1, and is made of a heat-resistant steel plate or the like and has a circular cross section. Reference numeral 3 denotes an inner cylinder which is eccentrically inserted into the outer cylinder 2 and constitutes the gasification chamber A, and is made of a heat-resistant steel plate or the like in a circular cross section. A gas combustion chamber B is formed between the inner cylinder 3 and the outer cylinder 2. Although the inner cylinder 3 and the outer cylinder 2 are eccentric in this embodiment, the invention is not limited to this and may be concentric. The outer cylinder 2 may be provided with a thin heat insulating coating such as a felt shape on the outer circumference.

The outer cylinder 2 has a ring-shaped top plate 20 that projects to the inside of the upper portion and forms the top of the gas combustion chamber B. The inner cylinder 3 is fixed to the ring-shaped top plate 20 by welding or the like. The inner cylinder 3 extends through the top plate 1c of the box-shaped furnace body 1 and has a loading lid 4 attached to the top so as to be openable and closable. The closing lid 4 is provided with a primary air intake 4a whose opening can be adjusted. As shown in FIG. 3, a lower portion of the outer cylinder 2 is cut out by a half cross section, and ashing frames 2a, 2a extending in a horizontal direction outwardly are fixed to the cutout portions. The opening 2a is open to the outside of the side plate 1a, and an opening / closing door 2b is attached to the opening, and the ash receiving container 2c is inserted and removed through the opening / closing door 2b. Then, rails 2d, 2d are fixed slightly above the ashing frames 2a, 2a, and a slide gate 5 that functions as the bottom of the gas combustion chamber B during operation can be moved forward and backward on the rails 2d, 2d. Supported by.

The inner cylinder 3 has a support plate 3a that projects inward at the lower part, and a roster 3b made of a heat-resistant bar or the like is attached to the support plate 3a. A protrusion 30 is provided to facilitate the circulation of air. A secondary air intake port 3d that is opened in the side plate 1b so that the opening can be adjusted is provided between the slide gate 5 and the roster 3b. Reference numeral 6 denotes an outer cylinder for dust collecting cylinders which is erected in the box-shaped furnace body 1 so as to be separated from the outer cylinder 2. The upper part is closed by a top plate 60, and the lower part is the outside of the box-shaped furnace body 1. An ash discharge cylinder 61 that opens at is communicated. An inner cylinder 6a for collecting dust is concentrically inserted and fixed to the outer cylinder 6 for dust collecting cylinder, so that between the inner circumference of the outer cylinder 6 for dust collecting cylinder and the outer circumference of the inner cylinder 6a for dust collecting. A cyclone chamber C is formed, and the dust collecting inner cylinder 6a projects above the box-shaped furnace body 1 and is connected to the chimney 62. The dust collecting cylinder outer cylinder 6 and the outer cylinder 2 are connected to each other by an exhaust gas duct 7 having an upper tangent portion, whereby the exhaust gas that has been swirled in the gas combustion chamber B enters the cyclone chamber C and swirls to collect dust. I try to get together.

Reference numeral 8 denotes an ejector blower, which is installed on a support base 83 fixed in the box-shaped furnace body 1 that is appropriately separated from the dust collecting cylinder outer cylinder 6, and the operation panel 8c is installed in the box-shaped furnace body 1. It is exposed to the outside from the side plate 1a. This ejector blower 8 has an intake pipe 8a and a push-in pipe 8b, and the intake pipe 8a is located in the box-shaped furnace body 1 in the upper region of the outer cylinder 2 and at a height level appropriately below the exhaust gas duct 7. Is held by a stay 82 provided outside the outer cylinder 2, and an intake port 80 for sucking the atmosphere inside the furnace is provided at the upper end. Further, the pushing tube 8b rises so as to penetrate the top plate 1c of the box-shaped furnace body 1, and the upper nozzle 81 is inserted into the dust collecting inner cylinder 6a as shown in FIG. 3 so as to form a down draft. The intake port 80 may be provided in other places than the above.

FIG. 5 and FIG. 6 show a second embodiment of the present invention. This embodiment is adapted to deal with the case where kitchen waste such as tea dust or water-containing waste is mixed into the cellulosic waste. Therefore, the heater 9 is mounted on the entire circumference or a part (for example, half circumference) of the outer side of the inner cylinder 3 via the holder 90 to preheat the inner cylinder 3 and the gas combustion chamber B. It The heater 9 is provided in at least one stage, preferably a plurality of stages in the height direction. The heater 9 may be a resistance heating element, but a gas heater as shown in the figure is preferable from the viewpoint of heat quantity. In this case, the pipe 9a is provided with injection holes 91 at predetermined intervals, and the end of the pipe 91 is a box-shaped furnace. It is connected to a joint with a valve that projects from the side plate 1a of the body 1. In some cases, the surrounding wall of the box-shaped furnace body 1 may be a double-walled water cooling jacket, a water supply port may be provided at a part, and a hot water outlet may be provided at another place.

[0011]

[Action]

 Next, the usage and operation of the present invention will be described. In the small garbage furnace according to the present invention, in addition to the gasification chamber A and the gas combustion chamber B, the ejector blower 8 is also housed in the box-shaped furnace body 1, and the machine elements are exposed to the outside of the box-shaped furnace body 1. Since it is not done, it has a good appearance, and it can be installed in an arbitrary part such as a room in the office by the caster 1e on the bottom. In use, the sliver 5 is pushed in, the input lid 4 is opened, and cellulosic dust such as shredder dust, paper pieces, and spelling type paper are put into the inner cylinder 3. The dust accumulates in the gasification chamber A in the inner cylinder in a mountain shape on the lower portion 3 b of the inner cylinder 3. Then, the ejector blower 8 is operated to ignite the dust in the gasification chamber A. In this way, since only a limited amount of primary air is supplied from the primary air intake port 4a provided in the charging lid 4, the waste in the gasification chamber A will be heated by the internal heat distillation method. The gas is gradually gasified by, so that even in the case of laminated paper, the unburned portion of the polymerized portion does not occur unlike the case of the spontaneous combustion type.

At this time, since the atmospheric air is flowing at a high speed from the nozzle 81 toward the downstream of the dust collecting inner cylinder 6a, a down draft force (intake force) is generated from the dust collecting cylinder outer cylinder 6 to the exhaust gas duct. 7 and the gas combustion chamber B to act on the gasification chamber A. Therefore, the gas generated from the gasification chamber A is drawn out to the gas combustion chamber B between the inner cylinder 3 and the outer cylinder 2 through the roster gap at the bottom of the gasification chamber A. During this time, combustion air is supplied from the secondary air intake port 3d provided between the roster 3b and the slygate 5, so the generated gas is mixed with the combustion air and sent to the gas combustion chamber B. The gas combustion chamber B is vigorously burned while winding the vortex, and the gas combustion chamber B is kept at an ambient temperature of 650 to 800 ° C., so that the generated gas is completely pyrolyzed. Since the gas combustion heat is directly transferred to the inner cylinder 3, radiant heat is radiated from the inner cylinder wall toward the inside of the gasification chamber A. Therefore, the waste in the gasification chamber A can be efficiently gasified within a short time by the synergistic effect of the internal heat and the external heat.

The exhaust gas generated by complete combustion in the gas combustion chamber B as described above is directed upward by the suction force and is sucked into the exhaust gas duct 7 communicating with the tangential portion of the outer cylinder 2 and collected. It is guided to the dust cylinder outer cylinder 6. Since the exhaust gas duct 7 communicates with the tangential portion of the dust collecting outer cylinder 6, the exhaust gas swirls around the dust collecting inner cylinder 6a, and the dust contained in the exhaust gas is removed by this cyclone action. The clean exhaust gas rises from the lower end of the dust collecting inner cylinder 6a and is exhausted through the chimney 62. Therefore, a thick document that is difficult to incinerate due to poor air circulation can be put in at once without cutting it with a shredder, etc., and it can be managed indoors without the need for human labor or generation of smoke or dust. It can be reliably processed in the field, and the leakage of confidential information can be completely prevented.

Further, in the present invention, the generated gas from the gasification chamber A is not guided to another location and gas-combusted, but the outer cylinder 2 and the inner cylinder 3 are double cylinders inside the box-shaped furnace body 1. It is installed in the above, and adopts the dry distillation method that uses both internal heat and external heat to burn gas in the space between the outer cylinder 2 and the inner cylinder 3. Therefore, the furnace body can be made compact. However, radiant heat is dissipated considerably around the outer cylinder 2 and the temperature inside the box-shaped furnace body 1 rises during operation, which necessitates a large-scale heat insulation structure, which makes it difficult to achieve compactness. Becomes However, in the present invention, the intake port 80 of the ejector blower 8 is opened in a region where the temperature inside the furnace space is high, so that the atmosphere dissipated by the heat dissipated from the outer cylinder 2 and the exhaust duct 7 is forcibly taken in. It is sucked into the ejector blower 8. Then, the draft sucks the outside air from the through hole 10 in the lower end region of the box-shaped furnace body 1. Therefore, the ambient temperature in the box-shaped furnace body 1 can be maintained at a safe temperature level within a range that does not impair the gas combustion in the outer cylinder 2.

In addition, in the second embodiment, the heater 9 is operated even if dust with a high water content such as tea dust, fruit peels, cigarette butts is thrown in alone or together with the cellulosic dust. By this, the inner cylinder 3 is constantly heated to a predetermined temperature, and the insufficient calorific value is compensated. Therefore, even when the operation is started, water can be quickly and surely removed, and gasification can be promoted. The dry distillation product generated by the gasification is compressed on the rustle 3b and falls on the slide gate 5. Therefore, if the slide gate 5 is pulled out as appropriate, the dry distillate is stored in the ashing container 2c and can be taken out and processed.

[0016]

According to the present invention described above, the outer cylinder 2 is erected on the heat-resistant box-shaped furnace body 1, and the outer cylinder 2 is provided with the inner cylinder 3 having the charging port at the upper part and the roster 3b at the lower part. A gasification chamber A and a gas combustion chamber B are formed by interposing and fixing a space between the gasification chamber A and the gas combustion chamber B, and in the box-shaped furnace body 1 at a position separated from the outer cylinder 2, An outer cylinder 6 for dust collecting cylinders, in which an inner cylinder 6a for dust collecting extending outside the box-shaped furnace body is concentrically arranged, is erected, and a tangential portion of the outer cylinder 6 for dust collecting cylinders and the outer cylinder 2 is connected by an exhaust gas duct 7. In addition, since the intake pipe 8a is opened in the furnace body and the blower pipe 8b is inserted in the dust collecting inner cylinder 6a in the box-shaped furnace body 1, the following excellent effects are obtained. To be. Cellulosic waste such as bulky documents can be incinerated without human labor and without producing smoke or dust. That is, the waste is gasified in the gasification chamber A, and the generated gas is attracted to the gas combustion chamber B between the inner cylinder 3 and the outer cylinder 2 by the downdraft action by the ejecta blower and completely combusted, and the combustion exhaust gas Is guided in the tangential direction of the dust collecting cylinder 6 to remove dust. Moreover, the inner cylinder 3 is heated by the combustion heat of the gas combustion chamber B, and the radiant heat is radiated to the internal gasification chamber. Therefore, the gasification efficiency can be made extremely high due to the synergistic effect of the internal heat and the external heat, no smoke is generated, and the treatment can be performed for a short time. The structure can be simple, small, and well-formed. Since the outer cylinder 2, the inner cylinder 3, the dust collecting mechanism, and the blower 8 are housed in the box-shaped furnace body 1, the appearance is good. Moreover, since the gas combustion chamber B is not separated from the gasification chamber A but is provided so as to surround the gasification chamber A, the gas combustion chamber B and the gasification chamber A can be made extremely compact. In addition, since the atmosphere in the furnace is forcibly sucked by the intake pipe 8a of the ejecta blower 8 and used for downdraft, the heat of the gas combustion chamber B and the heat of the exhaust gas duct are not accumulated in the furnace, and the volume of the furnace body space is reduced. Even if it is small, there is no problem even if it does not have a special heat insulation structure, and a compact structure can be achieved. As a result, it can be installed not only outdoors but also indoors, and it is possible to reduce the volume of waste in a department where waste is generated under the circumstances where management such as confidentiality is well managed and the processing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a small garbage furnace according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a sectional view of a portion of a dust collecting inner cylinder 6a in FIG.

FIG. 5 is a partial plan view showing another embodiment of the present invention.

FIG. 6 is a partial side view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Box-shaped furnace body 2 Outer cylinder 3 Inner cylinder 3a Rostru 4 Input lid 6 Dust collecting outer cylinder 6a Dust collecting inner cylinder 7 Exhaust gas duct 8 Blower 8a Intake pipe 8b Push-in pipe 9 Heater

Claims (4)

[Scope of utility model registration request] 1. A box-shaped furnace body 1 having a heat-resistant structure, in which an outer cylinder 2 is erected, and an inner cylinder 3 having a charging port in the upper part and a roster 3b in the lower part is provided with a gap between the outer cylinder 2 and the inner cylinder 3. The gasification chamber A and the gas combustion chamber B having a double structure are formed by inserting and fixing the dust in the box-shaped furnace body 1 at a position separated from the outer cylinder 2 and extending outside the box-shaped furnace body. An outer cylinder 6 for dust collecting cylinders in which the inner cylinders 6a for the dust collecting cylinders are concentrically arranged is erected, and the outer cylinder 6 for dust collecting cylinders is provided.
And a tangential direction portion of the outer cylinder 2 are connected by an exhaust gas duct 7, a blower 8 is further arranged in the box-shaped furnace body 1, and a pushing pipe 8b of the blower 8 is inserted into the dust collecting inner cylinder 6a. A small garbage furnace characterized in that the intake pipe 8a is opened in the furnace body to suck the atmosphere in the furnace body. 2. The small garbage furnace according to claim 1, wherein the inner cylinder 3 includes an outer cylinder 2 arranged eccentrically. 3. The small garbage furnace according to claim 1, wherein the intake port of the intake pipe 8a reaches near the upper region of the outer cylinder 2. 4. The small garbage furnace according to claim 1, which includes a heater having a heater 9 on the outer circumference of the inner cylinder 3.