JP2937239B2 - Storage hopper in a combustible wet waste dry incinerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustible water-containing waste which can be incinerated for cutting turf such as bent turf discarded from a golf course, kitchen waste, and other application fields. The present invention relates to a storage hopper in a dry incinerator.

[0002]

2. Description of the Related Art In golf courses, green (bent turf, korai turf), cut turf, fair vegetation on the fairway, and felled tree fragments from the surrounding forests, live foliage, hay, thinned wood, fallen trees,
Shrub litter, kitchen waste from clubhouse restaurants, etc.
Garbage is incinerated. In particular, cut turf such as bent turf contains a large amount of water, so it is difficult to burn as it is, and is incinerated after drying. For this reason, the present applicant has already proposed a dry incinerator for a golf course (see JP-A-8-178249).

[0003]

SUMMARY OF THE INVENTION The dry incinerator for a golf course according to the above-mentioned proposal is to incinerate a cut grass such as a bent turf by passing it through a rotating drying drum and sending it to an incinerator. ing. The hopper installed on the entrance side of the drying drum was equipped with a screw conveyor that sends out cut grass such as bent turf horizontally along the bottom surface. The turf may be tightly wound around the screw conveyor and turn into a rod shape, causing a bridging phenomenon above the screw conveyor, making it impossible to supply turf such as bent turf to the drying drum. However, there is a problem in that it requires time and effort such as breaking down a bridge from above, and furthermore, the rainwater staying at the bottom in the hopper is sent out to the drying drum side by a screw conveyor together with the cut turf, thereby lowering the drying efficiency.

[0004] It is an object of the present invention to prevent the bridging phenomenon and remaining of the stored matter (such as cut grass) in the hopper, to ensure the supply to the drying drum, to save labor, to achieve full automation, and An object of the present invention is to provide a storage hopper in a combustible water-containing waste dry incinerator that can improve drying efficiency by removing rainwater.

[0005]

In order to achieve the above object, the present invention has a pair of side walls parallel to each other in the vertical direction on both sides, and a front wall and a rear wall between the side walls on both sides. The hopper is arranged so as to form a horizontally elongated gutter-shaped storage container having a substantially V-shaped cross section with a narrow and expanded upper part, a drain hole is provided at the bottom, and the stored material is placed in the hopper along the rear wall plate. And a scraper for scraping up from the bottom and discharging from the top.

As described above, the hopper of the present invention uses the scraper to scrape the stored material from the bottom along the rear wall plate and discharge the stored material from the upper portion, thereby preventing the stored material from bridging in the hopper. Thus, the supply of the stored material to the drying drum is ensured. Further, since the drain hole is provided at the bottom of the hopper, rainwater staying at the bottom of the hopper can be appropriately removed. In addition, since the stored material is discharged from the hopper along the rear wall plate from the bottom of the hopper along with the rear wall plate and discharged from the upper part of the hopper, the stored material is drained and drained. Thus, the drying drum can be supplied with cut grass such as bent turf from which rainwater has been removed or combustible water-containing waste, thereby improving the drying efficiency.
In addition, the scraper is mounted on an endless chain that circulates along a substantially inverted triangular trajectory between the bottom of the hopper, the upper part of the front wall plate, and the upper part of the rear wall plate. Since the scraper is composed of a scraping plate with a length that extends over the entire length, when the scraped material in the hopper is discharged by the scraper, the scraping plate that has a length that extends over the entire length of the hopper in the horizontal direction circulates and moves. The stored material can be discharged over a period of time, and the stored material in the hopper is agitated, whereby the occurrence of the bridge phenomenon and the remaining of the stored material can be reliably prevented.
Furthermore, when the scraper scrapes up the stored material from the bottom in the hopper along the rear wall plate, the large lump falls from the middle of the scraped plate, and as a result of such operations being repeated, the scraper gradually becomes smaller. It is crushed and finally scraped and fed to a drying drum. In addition, since a width-shifting conveyor and a chute for narrowing and discharging the stored material were installed in the center between the side wall plates on both sides above the rear wall plate of the hopper,
The stored material can be supplied from the hopper to the drying drum in a narrowed manner.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic side view of a dry incinerator for flammable water-containing waste to which the present invention is applied,
A indicates a hopper, B indicates a drying furnace, C indicates an incinerator, and D indicates a chimney.

The hopper A is, as shown in FIGS.
A pair of inverted triangular side walls 1 parallel to the upper and lower sides on both sides
a, 1b, and a front wall plate 1c and a rear wall plate 1d are formed between the side wall plates 1a, 1b on both sides, and a substantially V having a narrow bottom portion and a widened upper portion.
The drainage hole 1e is provided at the bottom, and the hopper A is provided.
It has a scraper 2 for scraping up the stored matter from the bottom along the rear wall plate 1d and discharging it from the upper part. Combustible hydrous waste is supplied and stored.

The scraper 2 is provided at an appropriate interval on an endless chain 2b circulating and moving along a substantially inverted triangular trajectory between the bottom of the hopper A, the upper portion of the front wall plate 1c, and the upper portion of the rear wall plate 1d. The hopper A is configured by a scraping plate 2a having a length extending over the entire length in the horizontal direction of the attached hopper A. The above three places are chain sprocket wheels 2c, 2d, 2
e, a chain 2b is stretched endlessly, a plurality of scraping plates 2a are installed on the chain 2b at appropriate intervals, and furthermore, side wall plates 1a on both upper sides of the hopper A. , 1b is provided with a guide rail (not shown) for the chain 2b. A motor 2f is attached to a chain sprocket wheel 2d above the rear wall plate 1d.
Is transmitted, and the scraping plate 2a is circulated through the chain 2b.

[0010] Further, a take-out port 1f for the stored material is formed in the upper part of the hopper A, and a chute 3 for supplying the stored material in the hopper A to the dryer B is provided at the take-out port 1f. In this chute 3, both side wall plates 1a,
At the center between 1b, a side-by-side conveyor 4 for widening and discharging the stored material is installed. The converging conveyor 4 is constituted by a screw conveyor in which spiral blades 4a and 4b whose spiral directions are opposite to each other are formed symmetrically from the center in the axial direction to both sides. The driving force from the motor 4c is transmitted to the width shifting conveyor 4. The upper opening of the hopper A can be opened and closed by an opening and closing lid.

As shown in FIGS. 1 to 3, the drying furnace B has a drying drum 6 disposed in a drying chamber 5 so as to be rotatable in a horizontal direction, and a heat insulating material is laid on an inner wall of the drying chamber 5. Or
The drying room itself is made of heat insulating material. Drying drum 6
Is provided with a screw blade 6a extending forward in a spiral shape on the inner peripheral surface, and a scraping-up piece (not shown) is appropriately disposed so as to cross the screw blade 6a. And the motor 6c provided below
Is driven to rotate. The above-mentioned nodule crushing member 6b includes nodules in raw turf such as bent turf or combustible water-containing waste sent while being scraped up in the drying drum 6 by the screw blade 6a and the scraping pieces. In this case, since the nodules move while falling under their own weight, they are installed to collide with the nodule crushing member 6b at the time of the fall and are crushed. For example, the lumps are formed of a cylindrical wire mesh and dried. It is attached so as to rotate integrally with the drum 6. The blob crushing member 6b is not limited to the cylindrical wire mesh, but may be one in which the outer peripheral surface of the cylinder has been subjected to mountain-shaped unevenness or serration, and may be rotated separately from the drying drum 6. The drying drum 6 is connected to the chute 3 from the hopper A that penetrates the sealing cover 5 a attached to the start end of the drying chamber 5, and is supplied with raw turf such as bent turf and combustible water-containing waste supplied from the chute 3. The material is received in the hollow space between the screw blade 6a and the nodule crushing member 6b on the inner peripheral surface of the drying drum 6, and is dried under the hermetic cover 5b attached to the end of the drying chamber 5. An outlet 5c is formed, and the transportation means 7 connected to the outlet 5c and a supply port for combustible waste after drying of the incinerator C described later are appropriately connected. The transportation means 7 is configured to transport the combustible waste after drying by a pneumatic transportation method or a bucket conveyor method. In the drying furnace B, hot air for drying is supplied to a space between the inner surface of the drying chamber 5 and the drying drum 6,
A hot air supply device 8 having a self-heating means is provided as a drying heat source, and is configured to be able to supply exhaust heat gas discharged from a chimney D of an incinerator C described later. Whether to use hot gas depends on the drying condition of fresh turf such as bent turf and combustible water-containing waste in drying furnace B,
The combined operation and the switching operation can be appropriately performed according to the combustion state of the incinerator C. The exhaust of the hot air supplied to the drying furnace B is supplied to the incinerator C together with the odor generated when the cut grass such as bent turf and the combustible water-containing waste are dried, and is deodorized and incinerated.

As shown in FIG. 1, the incinerator C has a primary combustion chamber 9 and a secondary combustion chamber 10 disposed above the primary combustion chamber 9 so as to be continuous. The primary combustion chamber 9 is shown in FIG.
(A) and (B), a double heat insulating wall structure is provided, and a concave groove 9a is formed at the center of the bottom over the entire length in the width direction, and toward the concave groove 9a. The bottom wall surface 9b has a U-shaped cross section or a V-shaped inclined surface so that incineration materials can be collected. An auxiliary burner 11 is installed at one end of the groove 9a, and an ash outlet is formed at the other end. An ignition burner 12 is installed on the upper side surface, and a number of air nozzles 13 for ejecting air for promoting combustion are formed on the inner wall surface and the hearth, and a combustion blower 14 for blowing the air nozzle 13 is provided on a side portion. A supply port 15 for receiving the combustible waste after drying from the transportation means 7 of the drying furnace B is formed at an upper part, and garbage such as kitchen garbage, cut tree pieces,
An input port 16 for fresh branches and leaves, thinned wood, fallen trees and other general combustible waste is formed, and the upper surface is closed with a lid 17 that can be opened and closed.

The secondary combustion chamber 10 is configured so that the exhaust heat gas from the primary combustion chamber 9 flows in from the tangential direction and burns while turning, and the inflow exhaust heat gas is incinerated to emit odorless exhaust heat. A secondary burner 18 for gasification is installed, and an inspection port is formed on the wall surface of the chamber as needed. Also, above,
A stack D is connected to a cyclone type dust collector 19 for removing dust and fly ash (fly ash) and the like, and exhaust heat gas is discharged from the stack D. In the middle of the chimney D, a pipe for sending exhaust heat gas to the drying furnace B and a pipe for collecting exhaust gas discharged from the drying furnace B are connected. In the middle of these pipes, a fan and a damper are appropriately installed. . Further, the combustion blower 14 is appropriately provided with a preheating heat exchanger for supplying preheated air heated by the exhaust heat of the chimney D.

The dry incinerator for flammable water-containing waste equipped with the storage hopper of the present invention has the above-mentioned configuration. Next, an example of its use will be described. For example, in the case of a golf course, cut grass such as bent turf, dead grass, defoliated leaves, etc., which have been cut by a lawn mower or the like, are transported to the position of hopper A by a truck or the like, and thrown into the hopper A. On the other hand, large thinned wood and the like are sorted out and removed from the hopper A, thrown into the primary combustion chamber 9 of the incinerator C together with combustible waste generated in the club house, etc., ignited by the ignition burner 12, and used for combustion. The blower 14 supplies air that promotes combustion from the air nozzle 13 into the primary combustion chamber 9, ignites the auxiliary burner 11, and burns the thinned wood and the like and combustible waste that have been input. At the same time, the scraper 2 of the hopper A is driven, and the width conveyor 4 and the drying drum 6 are rotationally driven.
The vehicle 7 is also driven. By the driving of the scraper 2, the scraping plate 2a circulates in the hopper A in a substantially inverted triangular trajectory by the chain 2b, and moves the cut grass such as the bent grass into the hopper A from the bottom. Wall board 1d
Along the discharge port 1f and discharged. By this scraping operation, even if rainwater is contained in cut grass such as bent grass, it is removed. In addition, the scraping plate 2
a is subjected to appropriate draining means such as a small hole, a wire net, a slit or the like. The cut turf such as bent turf that has been scraped up to the take-out opening 1f is discharged onto the chute 3 to the drying furnace B, and is narrowed toward the center by the spiral blades 4a and 4b of the width-shifting conveyor 4, and the chute 3 Through the drying drum 6 of the drying furnace B. On the other hand, the scraping plate 2a that has passed through the outlet 1f passes through the upper surface of the hopper A,
Since it moves from the upper part to the bottom part of the front wall plate 1c, the stored matter in the hopper A is sequentially moved from the upper part to the lower part, so-called agitating, and the occurrence of a bridge is prevented. As a result, the cut grass and combustible wet waste do not remain in the hopper A.

The cut turf such as bent turf supplied from the hopper A to the drying furnace B by the chute 3 is supplied to the drying drum 6
Is supplied to one end of the space between the screw blade 6a and the nodule crushing member 6b on the inner peripheral surface of the drying drum 6a.
With the rotation of the screw blade 6a and the scraping piece attached across the screw blade 6a, the screw blade 6a is scraped diagonally upward from the lower part and when it moves upward, falls by its own weight and collides with the nodule crushing member 6b to be broken. It is crushed and sent forward sequentially while repeating this. The drying drum 6 cannot use the exhaust heat of the incinerator C at the beginning of the drying of cut grass such as bent turf, so that the self-heating means generates hot air and the hot air supply device 8 enters the drying chamber 5. After being supplied and heated to a high temperature and reaching the point where the exhaust heat of the incinerator C can be used, hot air is introduced into the drying chamber 5 while using only the exhaust heat of the incinerator C or using a self-heating means as appropriate. Supply and dry drum 6
Is heated to a high temperature. As a result, the turf such as bent turf is heated and dried by radiant heat and contact heat of the inner surface of the drying drum 6 and the screw blade 6a. As a result, the cut turf such as bent turf supplied to the drying furnace B has the screw blade 6a.
The agglomeration by the lumps and the crushing and crushing of the lumps by the lumps crushing member 6b cause the lumps to be sufficiently disintegrated and disintegrated from the dense state, and are further heated and dried by the radiant heat or the like. Dry to 60% or less. Then, it is supplied to the primary combustion chamber 9 of the incinerator C by the transportation means 7 from the dry matter take-out port 5c on the terminal side.

The dried turf such as the dried bent turf supplied to the primary combustion chamber 9 of the incinerator C in this manner is supplied from the upper part in a state of being separated. It is rapidly heated by the combustion heat of other incinerated materials and the combustion heat of the auxiliary burner 11, and immediately burns with oxygen in the air ejected from the air nozzle 13. Since the primary combustion chamber 9 has the bottom wall surface 9b as a circular arc surface having a U-shaped cross section or an inclined surface having a V-shaped cross section, the incinerated materials gather at the center of the bottom as incineration proceeds, and a groove is formed in this portion. 9a is provided,
In addition, since the auxiliary burner 11 is provided at one end of the concave groove 9a, the fuel collected at the center of the bottom is sequentially burned. This makes it possible to completely incinerate without generating unburned residue. The exhaust gas containing incompletely burned fine powder and fine particles such as soot and the like generated in the primary combustion chamber 9 is sent to the secondary combustion chamber 10 where it is more completely burned by the secondary burner 18, The exhaust gas becomes deodorized and smoke-eliminated, and is collected by the dust collector 19 and discharged from the chimney D. This chimney D
A part of the exhaust gas discharged from the furnace is used as a heat source of the drying furnace B and is also used for preheating the supply air of the primary combustion chamber 9.

Although the embodiment of the present invention has been described above, the drying furnace B and the incinerator C may have a conventional configuration or another configuration. In addition, the present invention also applies to fresh grass and kitchen waste having a high moisture content such as bent turf and the like generated in golf courses (in this case, bag-breaking means is mounted on the upper part of the hopper or the like to break the bag beforehand). In addition, the present invention can be applied as a storage hopper for supplying the residue after extraction of main components and the flammable water-containing waste such as organic sludge generated in the food manufacturing process to the drying unit at the pre-stage of incineration.

[0018]

According to the present invention, since the stored material is scraped up from the bottom along the rear wall plate and discharged from the upper portion by the scraper, a bridge phenomenon of the stored material in the hopper is prevented, and drying is performed. The supply of the stored material to the drum is ensured.
Further, since the drain hole is provided at the bottom of the hopper, rainwater staying at the bottom of the hopper can be appropriately removed. In addition, since the stored material is discharged from the hopper along the rear wall plate from the bottom of the hopper along with the rear wall plate and discharged from the upper part of the hopper, the stored material is drained and drained. Thus, the drying drum can be supplied with cut grass such as bent turf from which rainwater has been removed or combustible water-containing waste, thereby improving the drying efficiency. In addition, the scraper is an endless end that circulates and moves a scraping plate having a length over the entire length in the horizontal direction along a substantially inverted triangular trajectory of a bottom in the hopper, an upper portion of the front wall plate, and an upper portion of the rear wall plate. When the stored material in the hopper is discharged by the scraper, the stored material is discharged over the entire length in the horizontal direction in the hopper by circulating the scraping plate over the entire length in the horizontal direction of the hopper. In addition, since the stored material in the hopper is stirred, the occurrence of the bridge phenomenon and the remaining of the stored material can be reliably prevented. Furthermore, when the scraper scrapes up the stored material from the bottom in the hopper along the rear wall plate, the large lump falls from the middle of the scraped plate, and as a result of such operations being repeated, the scraper gradually becomes smaller. It is crushed and finally scraped and fed to a drying drum. In addition, since a widening conveyor and a chute for widening and discharging the stored material were installed at the center between the side wall plates on the upper side of the hopper,
The stored material can be supplied from the hopper to the drying drum in a narrowed manner.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the entirety of a dry incinerator for combustible water-containing waste to which the present invention is applied.

FIG. 2 is an enlarged side view of a hopper and a drying furnace in FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4A is a schematic vertical front view of a primary combustion chamber of an incinerator, and FIG. 4B is a schematic cross-sectional plan view of a primary combustion chamber of an incinerator.

[Explanation of symbols]

 Reference Signs List A Hopper B Drying furnace C Incinerator D Chimney 1a, 1b Side wall plate 1c Front wall plate 1d Rear wall plate 2 Scraper 2a Raising plate 2b Chain 3 Chute 4 Roller conveyer 5 Drying room 6 Drying drum 7 Transport means 8 Hot air supply means Reference Signs List 9 primary combustion chamber 10 secondary combustion chamber 11 auxiliary burner 12 ignition burner 13 air nozzle 14 combustion blower 15 drying turf supply port 16 garbage input port 17 lid 18 secondary burner 19 dust collector

Claims (3)

(57) [Claims] 1. A horizontally elongated gutter having a substantially V-shaped cross section having a pair of side wall plates parallel to the up and down direction on both sides, and a front wall plate and a rear wall plate between the side wall plates on both sides having a narrow bottom portion and an expanded upper portion. A hopper is formed by arranging it in a shape of a container, and a drain hole is provided in the bottom, and a scraper is provided in the hopper, which scrapes up the stored material from the bottom along the rear wall plate and discharges it from the top. A storage hopper in a dry incinerator for flammable water-containing waste. 2. A hopper having a scraper attached at appropriate intervals to an endless chain that circulates and moves along a substantially inverted triangular trajectory along the bottom of the hopper, the upper portion of the front wall plate and the upper portion of the rear wall plate. The storage hopper in a combustible hydrated waste incinerator according to claim 1, wherein the storage hopper is constituted by a scraping plate having a length extending in a horizontal direction. 3. A churn conveyor and a chute are provided at the upper portion of the rear wall plate of the hopper, in the center between the side wall plates on both sides, for widening and discharging the stored material.
A storage hopper in a dry incinerator for combustible water-containing waste according to item 4.