JPS6116687B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scraper-type conveyor that scrapes and conveys articles on a bottom plate.

A scraper-type conveyor is known as a type of conveyor for conveying loose particles and lumps with fluidity such as coal, wood chips, and foundry sand, and is used for conveying waste in waste treatment equipment. It is also used as This type of conveyor has a scraper attached to one or two endless chains and runs on the bottom plate or gutter.
Conventional scrapers are used to scrape and convey objects, but because they are formed into a plate shape made of steel plate or malleable cast iron, they do not adhere well to the bottom plate, making it difficult to convey them smoothly. Further, due to the lack of flexibility, in the case where a gate is provided in the conveyance path, there is a problem that the conveyed object is pressed against the gate by the scraper, resulting in stagnation of supply or damage to the gate.

The present invention has been made in view of the above points, and consists of a plurality of chain-shaped scrapers arranged in parallel in the conveying direction and inclined so as to intersect with each other, between the endless bands running at a constant speed on both ends of the bottom plate. A conveyor is provided which is constructed so that the conveyor belt is stretched, and is configured to slide on the bottom plate and run while scraping up conveyed items, thereby smoothing conveyance and passing through the gate, and preventing damage to the gate.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

This embodiment shows an example in which the conveyor according to the present invention is implemented in a waste incineration treatment device, and FIG. 1 is a schematic front view showing a waste storage and supply device of a treatment device in which this is implemented, and FIG. 2 is a supply Top view of conveyor, 3rd
The figure is a partially cutaway front view, Figure 4 is a sectional view along AA of Figure 2, Figure 5 is a detailed view of a chain scraper, and Figure 6 is a front view of a chain guide for a storage conveyor. . In these figures, in the incinerator, a shredded waste storage and supply device, generally designated by the reference numeral 1, is installed between a garbage crusher and an incineration device (not shown). A feeding device 3, the details of which are shown in FIGS. 2 to 5, is provided on the lower deck 2 raised above the floor. This feeding device 3 has a frame 4 formed into a rectangular box shape that spans almost the entire length of the deck 2 and is completely opened upward, and discharge ports 5 and 6 are provided downward at both longitudinal ends of the frame 4. It is open towards the front. Inside this frame 4, a bottom plate receiving frame 7, which is formed into a rectangular frame using U-shaped steel, is installed with the long side welded to the middle and high part of the inner surface of the frame 4. , a bottom plate 8 is welded and supported with both ends facing above the discharge ports 5 and 6. Further, above both long sides of the bottom plate receiving frame 7, chain rails 9 made of angle iron are installed parallel to the chain rails 9, and further below both long sides of the bottom plate receiving frame 7, chain rails 9 also made of angle iron are installed. A pair of upper and lower chain rails 10 and 1
1 is welded and installed on the inner surface of the frame 4.

On the other hand, a chain drive shaft 13 that is rotated by being driven by a variable speed motor 12 provided on the side is mounted on the end of the frame 4 on the incinerator side.
A driven shaft 14 that can be freely adjusted to move in the direction of distance from the chain drive shaft 13 is mounted on the end on the crushing device side. Sprockets 15 and 16 are attached to both ends of these shafts 13 and 14 close to the inner surface of the frame 4, and conveyor chains 17 and 18 are stretched between them. These conveyor chains 17 and 18 are
As shown by arrow B in the figure, the upper running section runs in the direction from the crusher side to the incinerator side, and is supported and guided by the bottom plate receiving frame 7 and chain rail 9, and the lower running section is supported and guided by the bottom plate receiving frame 7 and the chain rail 9. It is configured to be supported and guided by chain rails 10 and 11. Further, as shown in FIG. 5c, this guide section is provided with upper and lower protrusions 19 and 20, which restrict movement of the conveyor chains 17 and 18 in the width direction of the bottom plate 8. Attachments 21 are integrally formed on each of the inner ring plates constituting the conveyor chains 17 and 18, and between the attachments 21 on both sides, a plurality of chain scrapers 22 are formed in a chain. However, conveyor chain 17,
18 are stretched in parallel in the running direction. The chain scraper 22 is formed to have a longer length than the interval between the conveyor chains 17 and 18 so that it runs in sliding contact with the bottom plate 8, and the support part by one attachment 21 is used to support the other part. The sections are tilted by alternating phases in opposite directions, and are stretched so as to cross each other. In this embodiment, two chain scrapers 22 intersect each other.

As shown in FIG. 3, the end of the bottom plate 8 on the incinerator side extends horizontally from the conveyor chains 17 and 18, and then curves into an arc to cover the chain drive shaft 13. It is formed. Further, above the end of the bottom plate 8, a plate-shaped adjustable gate 23 spanning the entire width of the bottom plate 8 is provided and supported by the side plate of the frame 4, and this adjustable gate 23 can be adjusted by screws. The space between the lower end edge and the bottom plate 8 can be freely expanded or contracted. In addition,
The frame 4 is provided with a plurality of inspection windows 24.

A storage device 26 is disposed in a span one stage above the supply device 3 having the supply conveyor 25 as described above. As shown in FIG. 6 at its end on the crushing device side, this storage device 26 is equipped with two upper and lower chain rails 27 and 28, which are configured almost similarly to the supply device 3. A bottom plate 29 is installed between the bottom plate 27 and the bottom plate 29 is curved in an arc shape at both ends in the conveyance direction.
A storage conveyor, generally designated 30, is provided. This storage conveyor 30 includes a drive shaft 31 and a driven shaft 32 at both ends, sprockets 33 and 34 that are pivotally attached to both ends, a conveyor chain 35 stretched between them, and a conveyor chain 35 between the conveyor chains 35 on both sides. It consists of a chain scraper (not shown) having the same structure as the chain scraper 22 stretched in parallel, and is guided by chain rails 27 and 28 to a supply conveyor 25 as shown by arrow C in the figure.
drive in the same direction. The total length of this storage conveyor 30 is shorter than that of the supply conveyor 25,
Both ends thereof face the supply conveyor 25 above the middle of the conveyance path, and are configured to run intermittently. Further, above the bottom plate 29, there is provided a hopper 36 that opens upward over almost the entire surface of the bottom plate 29, and at the end of the hopper 36 on the crushing device side, a guide plate 37 that reaches the top span stands up with a slight incline. It is set up.

Further, a belt-type dropping conveyor 38 is stretched above the storage device 26 and within the uppermost span. This dropping conveyor 38 is shorter than the storage conveyor 30, has both ends facing above the starting end and the ending end of the conveyance path of the storage conveyor 30, and can switch its running direction between forward and reverse. configured to be possible. A dropper 4 consisting of a hopper 39 and a dispersion plate 40 is located below the starting end and the terminal end of the dropping conveyor 38.
1 and 42 are provided, respectively. In addition, 43
is the conveyor of the incinerator.

The operation of the storage supply device 1 configured as above will be explained. First, during the daytime work in which the crushing work is performed, the garbage crushed by the crushing device in the previous stage is supplied to the central part of the dumping conveyor 38, and then the garbage is sent to the dumping conveyor 38, which runs in the direction shown by arrow D in FIG. 38 and the hopper 3 of the dropper 41
9, is dispersed by the dispersion plate 40, and falls. The fallen garbage is directly supplied and conveyed to the terminal end of the storage conveyor 30 or onto the supply conveyor 25, and the amount of garbage passing through is regulated by a preset interval between the adjustable gate 23 and the bottom plate 8, which is generally called quantitative cutting. After that, it falls from the discharge port 6 onto the conveyor 43, and after being conveyed, it is incinerated in an incinerator. Since the amount falling from the dumping conveyor 38 is larger than the amount cut out by the gate 23, the crushed garbage is accumulated in front of the adjustable gate 23 after a certain period of time. Therefore, the direction of conveyance of the dropping conveyor 38 is indicated by arrow D.
When switching from the direction to the E direction, the crushed waste falls from the dropper 42 on the opposite side along the guide plate 37 onto the storage conveyor 30 and is conveyed. By the time the leading edge of the transported garbage reaches the end of the storage conveyor 30 and falls onto the supply conveyor 25, the garbage that had been accumulated in front of the gate 23 is removed for incineration and reduced. From then on, the incineration waste is supplied by intermittently falling from the storage conveyor 30 onto the supply conveyor 25. And when working late at night,
The crushing operation for noise prevention and the supply of crushed waste to the dumping conveyor 38 are stopped, and therefore the supply to the storage conveyor 30 is also stopped. However, since shredded waste is stored along its entire length on the storage conveyor 30, by continuing to transport and supply it to the supply conveyor 25 throughout the night, even if the incinerator is operated late at night, it will not be incinerated. Garbage never stops. By the time the crushing work is restarted the next morning, most of the garbage on the storage conveyor 26 is gone, so the crushed garbage is supplied to the dumping conveyor 38 and conveyed in the direction of arrow D, after which the above operation is carried out. repeated.

In the waste storage and supply work performed in this manner, the conveyors 25, 30, and 38 transport the crushed waste, for example, in the case of the supply conveyor 25, the waste on the bottom plate 8 is transferred to the conveyor chain 1.
Chain scraper 2 running together with 7 and 18
It is done by raking with 2. In this case, since the chain scraper 22 is formed longer than the interval between the conveyor chains 17 and 18, it runs while sliding against the bottom plate 8. Moreover, unlike a flat scraper, it is flexible, so that it does not adhere to the bottom plate 8. In addition, in the case of the supply conveyor 25, the garbage can be transferred between the scraper and the gate 2, like a flat plate scraper.
It is not strongly compressed between 3 and 3. moreover,
Since the chain scrapers 22 are inclined and intersect with each other, dust is not concentrated in the center of the width direction of the bottom plate 8, and even in the cutout section by the gate 23, the dust is dispersed in the width direction of the gate 23. , the compression between the scraper 22 and the gate 23 is further relaxed and cutting is performed smoothly. This means that when two chain scrapers 22, 22 cross each other, one chain scraper acts to move the waste to one side, and the other chain scraper moves the waste to the other side. On the other hand, it acts to cause the particles to stagnate at the intersection. Therefore, the transported waste is dispersed on both sides of the conveyor and at the intersection, and since these positions are shifted from each other in the transport direction, it is also dispersed in the transport direction.
Note that by forming the bottom plate 8 so as to be lower near the gate 23, dust will not clog the gate portion during cutting out. Then, at the end of this conveyance, garbage may be carried around by the chain scraper 22, but this garbage falls onto the bottom plate of the frame 4 at the lower running section of the supply conveyor 25 and is scraped up by the chain scraper 22. After that, it is discharged from the discharge port 5 on the opposite side and collected. In addition, the garbage carried around on the storage conveyor 30 is
It falls onto the supply conveyor 25 and is conveyed. Further, a hole is provided at the end of the bottom plate 8 so that the waste cut out from the gate 23 falls onto the bottom plate of the frame 4, and is conveyed in the opposite direction by the chain scraper 22 and discharged from the discharge port 5 on the opposite side. You can also do it. This improves stability.

Although this embodiment shows an example in which the conveyor according to the present invention was used for conveying waste in a waste incineration treatment device, it can also be used for conveying various types of bulk materials such as coal and wood chips. It can be implemented in the device.

As is clear from the above description, according to the present invention, the conveyor includes an endless belt running at a constant speed on both ends of a bottom plate, and a plurality of belts arranged in parallel in the conveying direction with both ends supported by the endless belt. By making the length of the scraper longer than the interval between the endless bands so that the scraper runs while slidingly contacting the bottom plate, and by stretching the scraper so that it crosses each other at an angle, Compared to a flat scraper, the scraper fits better against the bottom plate,
Further, since the conveyed objects are not concentrated in the center of the bottom plate but are dispersed in the width direction and the conveyance direction, conveyance is performed extremely smoothly. In addition, in the case where a gate is provided in the conveyance path to regulate the amount of passage through the conveyance path, the scraper is made flexible and crossed with each other, so that the conveyed object can be separated by the scraper and the gate. Since it is not compressed and is dispersed in the width direction of the gate, it is possible to pass through the gate extremely smoothly and prevent damage to the gate.

[Brief explanation of the drawing]

Figures 1 to 6 show a conveyor according to the present invention, Figure 1 is a schematic front view showing the entire storage and supply device in a waste treatment device implementing this, and Figure 2 is a plan view of the supply conveyor as well. , FIG. 3 is a partially cutaway front view, FIG. 4 is a cross-sectional view along AA of FIG. 2, and FIG. 5 is a plan view, side view, front view, and FIG. FIG. 6 is a front view of the chain guide for the storage conveyor. 8... Bottom plate, 17, 18... Conveyor chain, 22... Chain scraper, 25... Supply conveyor.

Claims (1)

[Claims] 1. Endless bands running at the same speed are strung on both sides of a fixed bottom plate, and a plurality of chain-shaped scrapers, which are longer than the interval between these endless bands, are brought into sliding contact with the bottom plate, and both ends are attached to the endless bands. A conveyor characterized in that the scrapers are supported and arranged in parallel in the conveyance direction, and the scrapers are stretched so as to be inclined and cross each other.