JP7007883B2 - A chute installed at the connecting part of the belt conveyor - Google Patents

Description

The present invention relates to a chute installed at a connecting portion of a belt conveyor that conveys lumps, powders, powders, etc., and more specifically, it occurs when sewage is treated by a sewage purification facility or the like in a sewage treatment facility. The present invention relates to a chute installed at a connecting portion of a belt conveyor for transporting a dehydrated cake (generally, a lump of sludge or the like having a water content of 75 to 80%) made of sludge or the like.

The dehydrated cake generated when the sludge generated in the sewage purification facility in the sewage treatment facility is treated with a dehydrator is incinerated in the next process. A plurality of belt conveyors are arranged according to the distance, and the plurality of belt conveyors are transferred and transported.
In this way, when transferring and transporting the belt conveyor, it becomes necessary to transfer the dehydrated cake from the upstream belt conveyor to the downstream belt conveyor in order to change the transport direction, etc., and a chute is installed at the connecting part. Then, the dehydrated cake on the upper conveyor on the upstream side is dropped into the chute and delivered to the lower conveyor on the downstream side, and the dehydrated cake is guided on the lower conveyor.
As a chute installed at a connecting portion of a belt conveyor, a chute having a cylinder having an opening at the upper part and a liner attached so as to cover the inner side surface of the cylinder are known. In addition, in order to prevent the dehydrated cake from sticking to the wall of the chute, silicon or the like may be applied to the wall of the chute.
The downstream end (outlet direction) of the upstream belt conveyor is located above the chute, and the upstream end (loading direction) of the downstream belt conveyor is located below the chute.
The conveyed material conveyed by the belt of the upstream belt conveyor falls when the belt turns to the return side at the downstream end, passes through the chute, and is placed on the belt at the upstream end of the downstream belt conveyor. Ru.
In addition, when the dehydrated cake is transferred between the upstream conveyor and the downstream conveyor without using a chute and is conveyed by multiple conveyors, the upstream belt conveyor of the adjacent conveyor is the transfer of the conveyed object at the downstream end. Therefore, install it so that it has an ascending inclined surface in the transport direction, and transport it to a long distance.
It is conceivable to use a flight conveyor on a vertical surface or an inclined surface, but when comparing a flight conveyor with a belt conveyor, the transfer parts including the flight on which the conveyed object is placed are made of hard resin or metal with the same transfer capacity. It is heavier than a belt conveyor that uses conveyor belts made of soft materials such as rubber, and it is necessary to have a sufficient support structure to withstand operation. Since the weight of the conveyor is heavier than the conveyor parts of the belt on which the goods to be conveyed are placed, the flight conveyor has to be more powerful than the belt conveyor.
For these reasons, the flight conveyor is not used for the inclination of the transfer between the belt conveyors, but the belt conveyor is usually used.

However, if the dehydration rate of the dehydrated cake is poor and the surface has a lot of water, or if chemicals such as a flocculant for improving the dehydration are mixed, the surface is smooth, so such a dehydrated cake is placed on top. When the dewatered conveyor passes through the chute and is dropped onto the belt conveyor installed below, it slides down on the conveyor belt of the belt conveyor and cannot be smoothly conveyed (see FIG. 6).
Further, if the dewatered cake has a high viscosity, the dewatered cake to be thrown becomes a large-scale deposit (clogging) at the transit portion, and the dewatered cake cannot be smoothly transported (see FIG. 6).
Further, when a case conveyor is used to prevent the dehydrated cake from being dissipated to the surroundings when the dehydrated cake is conveyed by the belt conveyor, when a large amount of the dehydrated cake is put into the casing at one time, the dehydrated cake is transferred to the casing wall. The dehydrated cake is clogged (occluded) in the casing, which causes problems such as inability to transport the dehydrated cake.

Therefore, an object of the present invention is to provide a chute installed at a connecting portion of a belt conveyor that solves the above-mentioned problems and eliminates the accumulation of dehydrated cake dropped on the belt conveyor on the downstream side.

The present inventors have solved the above problems by the following means.
(1) A chute installed between the upper belt conveyor and the lower belt conveyor when the transported object on the upper belt conveyor on the upstream side is dropped and delivered onto the lower belt conveyor on the downstream side. ,
An opening for receiving the transported material dropped from the upper belt conveyor, a chute main body including a discharge port for delivering the transported material onto the lower belt conveyor, a side wall, and the lower belt provided on the side wall. A chute installed at a connecting part of a belt conveyor, which comprises a scraping device that scrapes the transported material that has fallen on the conveyor in the transport direction.
(2) The scraping device conveys the rotating shaft erected between the side walls of the chute so as to intersect on the lower belt conveyor while crushing the dehydrated cake dropped on the conveyor belt of the lower belt conveyor. The connecting portion of the belt conveyor according to (1) above, which is composed of a plurality of scraping blades provided on the rotating shaft for transporting in the direction and a rotating motor for rotating the rotating shaft. A chute to be installed in.

A chute installed at the delivery section when a transported object on the upper belt conveyor on the upstream side is dropped and delivered onto the lower belt conveyor on the downstream side, and is a transport dropped from the upper belt conveyor. An opening for receiving an object, a discharge port for delivering the conveyed object onto the lower belt conveyor, a chute body composed of a side wall, and a rotating shaft erected between the side walls so as to intersect the lower belt conveyor. A scraping device composed of a plurality of scraping blades for transporting dehydrated cake dropped on a lower belt conveyor provided on the rotary shaft in the transport direction while crushing the dehydrated cake, and a rotary motor for rotating the rotary shaft. The conveyor is crushed and crushed with a scraping blade, and then lifted from the bottom to the top and pushed upward on the inclined surface. Can be transported smoothly without any problems.
Further, since it can be conveyed as described above, according to the transfer chute of the present invention, the dewatered cake delivered from the upper belt conveyor to the conveyor belt of the lower belt conveyor is not deposited, and the rotary motor of the belt conveyor ( It can be transported in the transport direction so as not to cause a load (not shown).

It is a schematic diagram which shows the use state of the shoot of this invention. It is sectional drawing of the chute of this invention which partially omitted. It is a perspective view of the scraping apparatus arranged in the chute of this invention. It is a perspective view of the chute of this invention. It is a figure which shows the action of the shoot of this invention. It is a figure which shows the action of the conventional shoot.

1 is a schematic view showing a usage state of the chute of the present invention, FIG. 2 is a cross-sectional view of the chute of the present invention partially omitted, and FIG. 3 is a perspective view of a scraping device arranged on the chute of the present invention. FIG. 4 is a perspective view of the chute of the present invention, and FIG. 5 is a diagram showing the action of the chute of the present invention.
As shown in FIGS. 1 to 5, 1 is an upper belt conveyor, 2 is a lower belt conveyor, both belt conveyors have a casing 3 and a conveyor belt 4, and the conveyor belt 4 is in the longitudinal direction of the casing 3. It is hung between the arranged pulleys 5 and 5'and sent by the conveyor roller 7. The pulleys 5 and 5'are rotatably attached to the ends of the casing 3 via horizontally arranged horizontal shafts 6 and 6'.
The drive motors (not shown) of the pulleys 5 and 5'are built in the belt conveyors 1 and 2.
8 is a chute installed below one end of the upper belt conveyor 1 (in the exit direction), 8a is the chute body, 8b is an opening at the upper part for receiving the conveyed material dropped from the upper belt conveyor 1, and 8c is the opening. A discharge port for delivering the conveyed material dropped from 8b onto the lower conveyor belt 2, 8d is a side wall, and the lower end portion 8e of the side wall 8d is bent inward so as to narrow the discharge port 8c as shown in FIG. ing.

Reference numeral 9 denotes a scraping device for feeding (scraping) the dehydrated cake 14 dropped on the lower belt conveyor 2 in the transport direction, and the rotating shaft 10 erected so as to intersect the lower belt conveyor 2 and the rotating shaft 10 thereof. A plurality of scraping blades 11 for transporting the dehydrated cake 14 dropped on the conveyor belt 4 of the lower belt conveyor 2 provided on the rotary shaft 10 in the transport direction while crushing the dehydrated cake 14, and a rotary motor for rotating the rotary shaft 10. It is composed of twelve.
In the present embodiment, as shown in FIGS. 2 and 3, the scraping blade 11 is configured by arranging the blades 13a and 13b so as to face the center of the rotation shaft 10.
By arranging the blades 13a and 13b so as to face each other, the dehydrated cake 14 can be scraped evenly, but the present invention is not limited to this, and for example, one may be used, and the rotation shaft 10 may be used. It may be configured by arranging three or four blades in the center.
Further, in the present embodiment, the scraping blades 11 composed of the blades 13a and 13b are provided on the rotating shaft 10 at three positions at equal intervals.
If the distance between the scraping blades 11 is too narrow, the dehydrated cake 14 will adhere.
Therefore, the number of scraping blades 11 is not limited to three, and the number and installation intervals may be determined according to the size (horizontal width) of the belt conveyor.
Further, the blades 13a and 13b of the scraping blade 11 constituting the scraping device 9 are made of a material such as stainless steel or synthetic resin which is strong enough to reliably scrape the dehydrated cake 14 and is not easily corroded. Will be done. The material preferably has a smooth surface so that the dehydrated cake 14 does not easily adhere to the cake.
In the present embodiment, the blades 13a and 13b are formed of a flat plate, but the shape is not particularly limited and may be a columnar shape or a shape having a wide tip.

[Explanation of action]
Next, the scraping of the dehydrated cake 14 by the chute installed at the connecting portion of the belt conveyor according to the embodiment of the present invention configured as described above with reference to FIGS. 1 and 5 will be described.
As shown in FIG. 1, when the dehydrated cake 14 is dropped from the conveyor belt 4 of the upper belt conveyor 1 onto the chute 8 installed below one end (exit direction) of the upper belt conveyor 1, the dehydrated cake 14 is subjected to. The inside of the chute 8 is dropped onto the conveyor belt 4 of the lower belt conveyor 2 along the side wall 8d of the chute 8 and the lower end portion 8e bent inward so as to squeeze the discharge port 8c following the side wall 8d. ..
Then, the dehydrated cake 14 dropped on the conveyor belt 4 of the lower belt conveyor 2 is crushed by the scraping blade 11 provided on the rotating shaft 10 of the scraping device 9 provided in the chute 8 in the transport direction. Be transported.
At this time, the scraping blade 11 rotates the dehydrated cake 14 on the conveyor belt 4 in the direction of scooping from the bottom to the top so as to feed the dehydrated cake 14 above the inclination of the inclined lower belt conveyor 2. Lift and rotate to push above the slope.
This is because when the dehydrated cake 14 is rotated in the reverse direction from top to bottom in the reverse direction of the above, the dehydrated cake 14 is pressed against the conveyor belt surface by the scraping blade 11 to rotate the belt conveyor (not shown). Due to the load and the resistance caused by the pressing of the scraping blade 11 against the conveyor belt surface, the scraping blade 11 tries to cut the dehydrated cake 14 more strongly. Since the dewatered cake 14 is made of the fibers of the above and is tightly entangled with each other to form a lump, the dewatered cake 14 is rolled and sent upward in an inclined manner so as not to give resistance due to pressing the dewatered cake 14 against the belt surface.
Further, the rotation speed at which the dehydrated cake 14 is fed by the scraping blade 11 is matched with the transport speed of the lower belt conveyor 2. The tangential velocity of the tip of the scraping blade 11 in the rotation direction is higher than the moving speed of the conveyor belt 4, and the dewatering cake 14 containing moisture on the surface and slippery is not slipped off by the inclination of the conveyor belt 4. A tangential velocity that can be squeezed with momentum at 11 is desirable.

1 Upper belt conveyor 2 Lower belt conveyor 3 Casing 4 Conveyor belt 5, 5'Pulley 6, 6'Horizontal axis 7 Conveyor roller 8 Chute 8a Chute body 8b Opening 8c Outlet 8d Side wall 8e Lower end 9 Scraping device 10 rotations Shaft 11 Scraping feed blade 12 Rotating motor 13a, 13b Blade 14 Dewatering cake

Claims (2)

When the transported object on the upper belt conveyor (1) on the upstream side is dropped and delivered onto the lower belt conveyor (2) on the downstream side, the upper belt conveyor (1) and the lower belt conveyor (2) are used. It is a chute (8) installed between
An opening (8b) for receiving the transported material dropped from the upper belt conveyor (1), a discharge port (8c) for delivering the transported material onto the lower belt conveyor (2), and a side wall (8d) at the upper part. The shoot body (8a) consisting of
A scraping device (9) that scrapes the transported object that has fallen on the lower belt conveyor (2) provided on the side wall (8d) in the uphill and inclined transport direction.
A chute installed at the connecting part of a belt conveyor, which is characterized by consisting of. A rotary shaft (10) erected between the side walls (8d) of the chute (8) so that the scraping device (9) intersects the lower belt conveyor (2).
A plurality of scraping blades (11) provided on the rotating shaft (10) for transporting the dehydrated cake (14) dropped on the conveyor belt (4) of the lower belt conveyor (2) in the transport direction while crushing the dehydrated cake (14). When,
A rotary motor (12) that rotates the rotary shaft (10).
The chute installed at the connecting portion of the belt conveyor according to claim 1, wherein the chute is composed of and.

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