JP2004224555A - Cleaning device for scraper conveyer and conveyance facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously and surely remove carried matter fixed on a scraping surface of a scraper provided on a scraper conveyer. <P>SOLUTION: A cleaning device is constituted by installing at least a pair of rotary blades 12, which can scrape the attached carried article by sliding on the scraping surface 9a of the scraper 9 between a slide starting position a and a separating position b, around a rotary shaft 11, and installing a rotary blade mechanism R which obtains rotary driving of the rotary shaft 11 by travel of the scraper conveyer. In relation to arrangement of the rotary blade 12 around the rotary shaft 11, in a separating attitude in which an advancing rotary blade 12a is in the separating position b, a rotary blade 12b moved following the advancing rotary blade 12a is constituted so as to be positioned between the slide starting position a and the separating position b. A resistance applying mechanism applying resistance to rotation of the rotary shaft is installed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a scraper conveyor that includes a plurality of scrapers attached to a chain at predetermined intervals and that conveys a conveyed object while scraping the conveyed object by a scraping surface provided on the scraper. The present invention relates to a cleaning device that removes a conveyed object such as wet ash adhered to a scraping surface of a scraper on a conveyance return path that is completed and returned to a conveyance start side.
[0002]
[Prior art]
In general, this type of scraper conveyor has a number of scrapers attached to a single or double chain at regular intervals, and thereby scrapes and transports a conveyed object in a trough. As the conveyed material, lump to granular material can be handled. Therefore, even wet ash having relatively high adhesiveness can be transported.
[0003]
This kind of wet ash is, for example, an object to be conveyed from a refuse incineration facility to a melting facility. However, if the wet ash adheres to the surface of the scraper due to its adhesiveness, the conveyability deteriorates.
[0004]
Therefore, a technique has been proposed in which a conveyed material stuck to the surface of a scraper is continuously removed on a conveyance return path.
[0005]
In Patent Literature 1, a swingable wiper arm is provided on a lower running side around a sprocket for driving a chain of a scraper conveyor, and a scraper which runs intermittently on one end side of the wiper arm. The wiper arm is provided with a return member at the other end of the wiper arm. In cleaning, after the wiper scrapes off the conveyed matter adhered to the scraper by the running force of the scraper, the wiper is returned to the return position for waiting for the next scraper by the return member.
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-085938 (Claim 1, Claims, Drawings, etc.)
[0007]
[Problems to be solved by the invention]
In the technique disclosed in the above publication, the life of the wiper is extremely short because a flexible brush-like wiper is used. Further, since the arm alternately repeats a posture in which the wiper works and a posture in which the arm is retired from the scraper, the burden on the swing mechanism is large.
[0008]
On the other hand, for example, it is conceivable to hit the scraper with a hammer or the like as appropriate. However, when the applicants have tried, the adhered substances cannot be sufficiently removed. Further, it is conceivable to use air, steam, water or the like for cleaning, but there is a limit to the removal ability, and problems such as scattering of adhered matter generated during craning, and exhaust / drainage are problems.
[0009]
An object of the present invention is to obtain a cleaning device for a scraper conveyor capable of continuously and surely removing a conveyed matter adhered to a scraping surface of a scraper provided on a scraper conveyor, and to provide such a cleaning device. The purpose of the present invention is to obtain a transfer facility equipped with the above.
[0010]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a cleaning device for a scraper conveyor, comprising a plurality of scrapers attached to a chain at predetermined intervals, and conveying a conveyed object while scraping the conveyed object by a scraping surface of the scraper. Is, as described in claim 1,
Between the sliding start position and the release position, at least one pair of rotating blades, which can slide on the scraping surface of the scraper and scrape the conveyed matter adhered on the scraping surface, are rotated by a rotating shaft. Prepare around
In a state where the rotating blades are in contact with the scraping surface, a rotating blade mechanism is provided to obtain a rotational drive around the rotating shaft by traveling of a scraper conveyor,
Regarding the arrangement of the rotating blades around the rotation axis, in the detached posture in which the preceding rotating blade is at the detached position, the rotating blade moving after the preceding rotating blade is moved from the sliding start position to the detached position. Comprising a rotating blade arrangement located between the positions,
According to another aspect of the present invention, the rotary blade mechanism includes a resistance imparting mechanism for giving resistance to the rotation of the rotating shaft.
[0011]
In the cleaning device for a scraper conveyor having this configuration, a predetermined portion of the rotating blade slides on the scraping surface of the moving scraper while the rotating blade rotates around the rotation axis, and is fixed to the surface. Scraping off the conveyed object.
In this state, the blade and, consequently, the rotary blade mechanism rotate by obtaining the driving force from the conveyor side.
[0012]
In response to this rotation, the contact pressure of the predetermined portion of the rotating blade against the scraping surface is secured by the resistance imparting mechanism provided in the rotating blade mechanism, and the rotating blade mechanism does not rotate freely, and the rotation of the conveyor side is reduced. The rotation posture is maintained according to the running.
[0013]
Then, when the preceding rotating blade reaches the detached position, the succeeding rotating blade is configured to come to the sliding start position of the scraping surface of the succeeding scraper. Rotation and scraping of the blade mechanism are continued.
[0014]
As a result, it is possible to reliably remove the conveyed matter that is stuck to the scraping surface of the scraper one after another. Further, since the mechanism configuration is based on rotation, the operation is stable, and a reliable cleaning ability can be exhibited for a long period of time.
[0015]
Now, to adopt this kind of configuration, as described in claim 2,
The scraper is configured to include the scraping surface having a direction perpendicular to the traveling direction and the vertical direction of the scraper conveyor in the plane thereof,
The rotating shaft is a rotating shaft parallel to the orthogonal direction, and the rotating blades are configured to include an axially extending material that extends in a direction orthogonal to the rotating shaft, and the axially extending material is configured. It is preferable that the extended end of the slidably contact the scraping surface during scraping.
[0016]
By aligning the direction of the rotating shaft with the direction of the scraping surface of the scraper, and having an extending material that extends in the radial direction of the scraper, the extended end is made to be a part that performs a scraping action, so that the rotating shaft can be viewed in cross-section. The cleaning device for a scraper conveyor according to the present invention can be realized with a relatively easy-to-manufacture structure including a plurality of extending members radially extending in the radial direction.
[0017]
Further, in the above configuration, as described in claim 3,
The rotating blade mechanism is configured to include a mechanism main body having the rotating shaft, and a blade portion that contacts the scraping surface,
It is preferable that the blade portion is configured to be adjustable in position relative to the mechanism main body in a radial direction of the rotation shaft.
[0018]
By making the rotating blade extend and retract with respect to the mechanism main body, the scraping action position of the rotating blade can be adjusted.
[0019]
In addition, the cleaning device for the scraper conveyor described so far and the transfer equipment including the scraper conveyor are configured, as described in claim 4,
It is preferable that a plurality of the cleaning devices are provided, and different cleaning devices are configured such that a portion where the conveyed object is scraped off on a surface scraped by the rotating blades is different.
A plurality of cleaning devices are provided, and the cleaning locations are made different (may overlap), so that the scraping surface of the scraper can be reliably cleaned at each location.
[0020]
Furthermore, as described in claim 5, it is preferable that a closed hood is provided to cover the cleaning device and the scraper conveyor, and the inner space of the closed hood and the outer space are isolated.
If the conveyed material is incinerated material such as wet ash, it may contain harmful substances such as dioxin inside, and it is preferable to adopt an isolation structure in order to prevent this kind of material from diffusing. .
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in detail with reference to an embodiment shown in the accompanying drawings.
FIG. 1 is a front view of an embodiment of a transport facility 2 provided with a cleaning device 1 of the present invention, FIG. 2 is a detailed view of a main part, FIG. 3 is a plan view near the cleaning device shown in FIGS. FIG. 4 is a side view of the vicinity of the cleaning device shown in FIGS. FIG. 5 is an explanatory diagram of the rotation operation.
[0022]
[Configuration of entire equipment]
The transport equipment 2 of the present application is configured to include a scraper conveyor 3 and a cleaning device 1 provided in the transport return path 3A, and receives the wet ash 4 discharged from the refuse incineration equipment on the left side in FIG. It is received at the port 5 and conveyed for discharge at the discharge port 6 connected to the melting facility side on the right side of the figure.
[0023]
The scraper conveyor 3 is configured by extending two chains 8 between sprockets 7 provided at predetermined locations on the entrance 5 side and the discharge 6 side.
As shown in FIG. 2, the scraper 9 is configured to be attached to a link plate 8b that connects the rollers 8a of the continuous chain 8, and when the chain 8 travels in the left-right direction shown in FIGS. The front surface of the plate is formed so as to form a vertical scraping surface 9a.
[0024]
In FIGS. 1 and 2, the lower traveling section on which the chain 8 travels toward the right side is a transport path 3B for transporting the article while scraping it, and the upper traveling section on which the chain 8 travels toward the left side. This is the transport return path 3A.
[0025]
[Scraper 9]
As shown in the plan view of FIG. 3, the scraper 9 is formed of a substantially H-shaped member in plan view (having an H shape when viewed from the left or right in the arrangement shown in FIG. 3). At the upper and lower ends shown in FIG. 3, both ends are connected and fixed to link plates 8b located at both ends. This direction is the longitudinal direction of the scraper 9.
[0026]
As shown in FIGS. 1, 2 and 4, the scraper 9 is a rectangular member having a certain width in the vertical direction, and the scraper 9 is moved horizontally (see FIG. (Left / right direction shown), and take a vertical posture.
In the vertical posture, the scraping surface 9a is an end surface on the front side in the traveling direction of the chain 8.
[0027]
As shown in FIGS. 1, 2, and 4, at a predetermined position in the vertical direction of the scraper 9 (located vertically upward on the transport return path 3A and located vertically downward on the transport path 3B), the chain 8 A reinforcing frame 9b having a triangular box shape in cross section shown in FIG. 2 is provided on the end face on the rear side in the traveling direction.
The reinforcing frame 9b serves to reinforce the lower end portion of the scraper 9 located on the lower traveling portion in FIGS.
[0028]
Further, as shown in the figure, the scraper conveyor 3 and the cleaning device 1 are both housed in a closed hood 10, and the space between the internal path where the conveyed object 4 is conveyed and the space outside the hood 10 is blocked / isolated. Is adopted.
[0029]
Hereinafter, the cleaning device 1 will be described in more detail.
[Schematic structure of device]
The apparatus 1 is provided, for example, with a rotating shaft 11 extending in the longitudinal direction of the scraper 9, that is, in the front and back direction in FIG. 1 (vertical direction in FIG. 3), and equally distributed around the rotating shaft 11 as shown in FIG. 5. And a rotating blade mechanism R including the rotating blade 12 provided. In the illustrated example, four rotating blades 12 are provided.
[0030]
The rotation of the rotary blade mechanism R is caused by a driving force transmitted through the chain 8, the scraper 9, and the rotary blade 12 provided on the conveyor 3.
[0031]
In this rotation, the rotary blade 12 slides on the scraping surface 9a of the scraper 9 from the sliding start position a to the detachment position b to scrape the transported object 4 attached to the scraping surface 9a. take. 2 and 5, the position a is the sliding start position, and the position b is the disengagement position.
[0032]
As can be seen from FIG. 2, with respect to the rotation of the rotating shaft 11, in the detaching posture in which the preceding rotating blade 12a is at the detaching position b, the succeeding rotating blade 12b is moved from the sliding starting position a to the preceding rotating blade 12a. The structure which comes before the separation position b is adopted.
[0033]
Further, as shown in FIGS. 3 and 4, a rotary blade mechanism R is provided with a resistance imparting mechanism F for applying resistance to the rotation of the rotary shaft 11.
[0034]
[Rotary blade mechanism R]
As described above, the rotating blade mechanism R is configured to include the plurality of rotating blades 12, and the blades 12 are formed as axially extending members extending in a direction orthogonal to the rotating shaft 11. The extension end 13 is configured to abut the scraping surface 9a. By making the blade adjustable, the blade tip position can be adjusted in the operating state, and the tip can be reliably applied to the scraper. Further, the blades can be easily replaced, and the driving performance can be improved.
[0035]
The rotary blade mechanism R includes a mechanism main body 14 having a rotary shaft 11 and a blade portion 15 abutting on the scraping surface 9a. The position is adjustable in the radial direction of the shaft. This position adjustment can be made by adjusting the fixed position via the elongated hole 16 provided on the main body side.
[0036]
[Resistance imparting mechanism F]
The resistance applying mechanism F is for applying resistance to the rotation of the rotating shaft 11 and ensuring sliding contact of the rotating blade 12 with the scraping surface 9a.
[0037]
As shown in FIG. 4, the mechanism F is provided with a torque keeper 17 at one end of the rotating shaft 11, and forms one side of a plate 18 which forms a cleaning device base and is provided near both ends of the rotating shaft. A brake can be applied to the rotation of the rotating shaft 11 between a torque arm 19 fixed to the plate 18.
[0038]
By employing the configuration described above, the rotary blade mechanism R rotates while the blade portion 15 is pressed against the scraping surface 9a of the scraper 9 returning on the transport return path 3A, and the rotary blade tip continuously rotates. However, the scraper 9 that moves on the scraping surface 9a and intermittently or continuously moves to a predetermined position can be cleaned.
[0039]
That is, a resistance is applied to the rotating shaft 11 so as not to be easily rotated by the resistance applying mechanism F, a plurality of rotating blades 12 for scraping are installed on the rotating shaft 11, and the rotating blade 11 rotates along the interval of movement of the scraper 9 on the conveyor side. The blades 12 are rotated, and the subsequent rotating blades 12 continuously start scraping the subsequent scraper 9 to remove the contaminants. In this case, the succeeding rotary blade 12 may stand by at a predetermined position until the subsequent scraper 9 arrives.
[0040]
[Another embodiment]
Another embodiment of the present application will be described below.
(1) In the above embodiment, the radial position of the blade portion is adjustable, but it is not always necessary to be able to adjust the blade portion, and the configuration may be such that the blade portion is fixed to the mechanism body.
(2) In the above embodiment, a single cleaning device 1 is provided. However, as shown in FIG. 6, two or more cleaning devices may be provided. In the example shown in FIG. 6, the cleaning device 1 b located on the left side of the drawing has a vertical lower side with respect to the scraping depth of the cleaning device 1 a located on the right side of the drawing. It is set so that a sufficient cleaning ability can be exhibited over the entire scraped surface.
(3) In the above embodiment, an example in which four rotating blades 12 are provided around the rotating shaft 11 has been described. It should just be. Of course, three or more sheets may be used.
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment of a transfer facility provided with a cleaning device according to the present invention; FIG. 2 is a detailed front view showing the vicinity of the cleaning device shown in FIG. 1; FIG. 3 is a plan view showing the vicinity of the cleaning device shown in FIG. FIG. 4 is a side view showing the vicinity of the cleaning device shown in FIG. 1; FIG. 5 is an explanatory view of the operation; FIG. 6 is a view showing another embodiment of the present invention;
Reference Signs List 1 Cleaning device 2 Transport equipment 3 Scraper conveyor 3A Transport return path 4 Wet ash (transported material)
Reference Signs List 9 scraper 9a scraping surface 10 sealed hood 12 rotating blade 13 extending end 14 mechanism body 15 blade portion 17 torque keeper R rotating blade mechanism F resistance applying mechanism

Claims (5)

A cleaning device for a scraper conveyor that includes a plurality of scrapers attached to a chain at predetermined intervals, and conveys a conveyed object while scraping the conveyed object by a scraping surface of the scraper,
Between the sliding start position and the disengagement position, at least one pair of rotating blades, which can slide on the scraping surface of the scraper and scrape the conveyed matter adhered on the scraping surface, rotate the scraper. Prepare around
In a state where the rotating blades are in contact with the scraping surface, a rotating blade mechanism is provided to obtain rotational drive of the rotating shaft by traveling of a scraper conveyor,
Regarding the arrangement of the rotating blades around the rotation axis, in a detached posture in which the preceding rotating blade is at the detached position, the rotating blade moving after the preceding rotating blade is moved from the sliding start position. It has a rotating blade arrangement configuration located between the detached position,
A cleaning device for a scraper conveyor, wherein the rotary blade mechanism includes a resistance applying mechanism for applying resistance to rotation of the rotation shaft. The scraper is configured with the scraping surface including a direction perpendicular to the traveling direction and the vertical direction of the scraper conveyor, the plane being included in a plane thereof,
The rotating shaft is a rotating shaft parallel to the orthogonal direction, and the rotating blades are configured to include an axially extending material that extends in a direction orthogonal to the rotating shaft, and the axially extending material is configured. 2. The cleaning device for a scraper conveyor according to claim 1, wherein an extended end of the scraper comes into contact with the scraping surface during scraping. The rotating blade mechanism is configured to include a mechanism main body having the rotating shaft, and a blade portion that contacts the scraping surface,
The cleaning device for a scraper conveyor according to claim 1, wherein the blade portion is configured to be freely adjustable in a radial direction of the rotation shaft with respect to the mechanism main body. A cleaning device for a scraper conveyor according to any one of claims 1 to 3, and a transfer facility provided with a scraper conveyor,
A transport facility comprising a plurality of the cleaning devices, wherein different cleaning devices have different portions for scraping a transport object on a surface scraped by rotating blades. The transport equipment according to claim 4, wherein a closed hood that covers the cleaning device and the scraper conveyor is provided, and an inner space and an outer space of the closed hood are isolated.

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