JP4198846B2 - Crusher using disk screen - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to crushing equipment using disk screens.
[0002]
[Prior art]
Conventionally, it is installed at the intake of a water intake such as irrigation water in a river, cooling water for a power plant, water for water supply, etc., and foreign substances that try to flow into the intake from the river are blocked on the river side. A screen is installed at the water intake port to prevent solid foreign matter (garbage) from being trapped and retained at the water intake port.
This screen is mainly used for collecting dust in water treatment facilities, and prevents inflow of river debris during water intake, and also protects pumps at pump stations.
As shown in FIG. 4, in the conventional screen, a disk screen is constituted by a plurality of columns arranged in parallel in the vertical direction from the upstream end to the downstream end of the river, and when all these disks rotate, water is taken in. The waste flowing down the river is caught by being caught on the disk screen, and the captured waste is guided from the upstream end toward the downstream end, and is carried on the river flow to the downstream side.
[0003]
Also, as shown in FIG. 3, a crushing device with a disc screen may be configured by arranging a crusher manufactured separately from a disc screen adjacent to a conventional disc screen. In this case, the garbage flowing down the river is caught by being caught on the disk screen, and the collected garbage is guided from the upstream end to the downstream end of the disk screen, and further sequentially guided from the disk screen to the crusher. May be processed finely by machine.
[0004]
[Problems to be solved by the invention]
By the way, in the crushing apparatus with a disc screen that is configured by adjoining and arranging the crusher manufactured separately from the conventional disc screen, the head loss can be reduced by the disc screen, but the disc screen and the crusher are separated from each other. Since each of these devices is arranged adjacent to each other and disposed adjacent to each other, dust tends to stay at the downstream end of the disk screen. In addition, a drive device must be installed in each device, the installation area is bulky, and installation is troublesome. In addition, since there is an extra space that becomes a dead zone between the disc screen and the crusher, there is a problem that installation is difficult in a narrow channel.
[0005]
In addition, when the crusher manufactured separately from the disk screen is installed as a single unit, the opening area is small, the head loss is large, and the water level difference between the front and rear is large, which increases the effective capacity of the pump well in the subsequent stage. The number of pump operations will increase, the operating power cost will increase, and if it is intended to secure effective capacity, it will be necessary to deepen the pump well, which will increase the construction cost and reduce the opening area. For this reason, there is a problem that it is necessary to increase the number of times of operation of the crusher, and the operation power cost is also increased.
[0006]
Further, the disk screen is a single disk screen, and all the disks are configured to have the same thickness from the upstream end to the downstream end. Therefore, as shown in FIG. A screen that should have a width of amm inevitably widens to a screen width of bmm, and cannot be made an effective screen width at the upstream end. As a means to prevent the inflow of dust, a plate dedicated to preventing inflow must be attached in front of the screen. As a result, the effective screen width cannot be maintained, and the installation of the plate takes time and money, and the installation area There was a problem that increased.
[0007]
The present invention solves the problems of conventional disk screens and crushers with disk screens, secures an effective screen width across the entire disk screen without installing an inflow prevention plate in front of the screen, and the disk. and to provide a crushing equipment using a disk screen can be miniaturized devices by eliminating the dead zone between the screen and the crusher.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a crushing apparatus using a disc screen according to the present invention comprises a plurality of cylindrical screen units formed by fixing a plurality of discs to a rotating shaft at predetermined intervals, and adjacent cylindrical screens. It consists of a disk screen arranged so that the disks of the unit overlap each other, and a crusher formed by fixing a number of disk-shaped cutter teeth to a rotating shaft at a predetermined interval, and the downstream end of the disk screen In the crushing apparatus using the disc screen provided so that the disc of the cylindrical screen unit and the disc-shaped cutter teeth of the crusher are alternately meshed , the effective screen width of each screen is determined between the adjacent cylindrical screen units. The discs of the cylindrical screen unit at the upstream end are all equalized with discs Increasing the thickness, spacing of the disc overlapping the disk of the next row cylindrical screen unit, characterized in that set so that the screen effective cell width.
[0009]
In this crushing device using the disc screen, the disc-shaped cutter teeth of the crusher and the disc of the disc screen having the above structure are provided in the same integrated frame, and these are alternately meshed. The dead zone between the screen and the crusher is eliminated, the installation area is reduced, installation is possible even in narrow waterways, and the waste carried by the disc screen moves directly to the crusher, so the downstream end of the disc screen In addition, these wastes are crushed without staying as in the prior art, the drive device can be shared, and installation is easy.
[0010]
In particular , since the thickness of the disk in the upstream end row of the disk screen is increased, the effective screen width of the screen is maintained even at the end portion, and in order to adjust this by the thickness of the disk, The pitch does not go out of order, so that it is not necessary to install an inflow prevention plate for preventing the inflow of dust into this portion, which has been conventionally required.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
It will be described with reference to the embodiment of the crushing equipment using disc screen of the present invention with reference to the accompanying drawings.
[0012]
1 to 2 show an embodiment in which a crushing device using a disk screen of the present invention is used by being disposed at a water intake of a water intake channel provided in a river or the like.
The disc screen S according to the present invention includes a plurality of cylindrical screen units 1 formed by fixing a large number of discs 12 to a rotary shaft 11 at predetermined intervals, and the discs 12 of adjacent cylindrical screen units 1, 1. 12 are rotatably supported by a frame (not shown) through bearings so that 12 overlap each other, and the rotating shaft 11 of each cylindrical screen unit 1 is connected to a driving source such as an electric motor and an appropriate transmission mechanism. The drive mechanism (not shown) is configured to be rotationally driven.
[0013]
In addition, as shown in FIG. 2, when arranging a plurality of cylindrical screen units 1 in parallel so that the circular plates 12, 12 of the adjacent cylindrical screen units 1, 1 overlap each other, Except for the cylindrical screen unit 1 arranged at the upstream end, the thickness t and the size of the disk 12 of all the cylindrical screen units 1 are made equal, and a predetermined distance is provided between the disks 12 and 12 fixed to the rotary shaft 11. An interval is set, for example, to have a required effective screen width a.
[0014]
Furthermore, the plate thickness t ′ of the disk 13 of the cylindrical screen unit 1 disposed at the upstream end is made thicker than the plate thickness t of the disk 12 of the cylindrical screen unit 1 in the second and subsequent rows.
As shown in FIG. 2, the thickness t ′ of the disk 13 is set so that the space between the disks 13 and 13 is equal to the space between the disks 12 and 12 in the second and subsequent rows and the effective screen width amm.
Thereby, even if it does not equip the upstream of the cylindrical screen unit 1 at the upstream end with a dust inflow prevention plate, an effective mesh width is ensured.
[0015]
In addition, the crusher C is disposed adjacent to the cylindrical screen unit at the downstream end in the same frame F in which the cylindrical screen units 1 are arranged in a plurality of rows.
In this crusher C, a large number of disk-shaped cutter teeth 22 are arranged on the rotary shaft 21 in the same manner as the disk screen S so that the dust flowing down can be crushed at the same pitch as the disk 12 of the disk screen. Thus, the cutter unit 2 is formed, and one or more of the cutter units 2 are configured in parallel.
[0016]
Further, when the disk screen S and the crusher C are arranged and arranged on the same frame F as shown in FIG. 2, the disk 12 at the downstream end of the cylindrical screen unit 1 and the disk-shaped cutter teeth 22 of the crusher C Are arranged so as to alternately mesh with each other.
[0017]
In this disc screen, the disc screen S installed at the water intake port guides the dust on the screen mesh width a to the downstream end side, that is, the crusher C, while taking water by rotating the disc. Here, in the disc screen according to the present invention, the thickness t ′ of the upstream end disc screen is larger than the thickness t of the disc screen in the other row, so that as shown in FIG. The effective mesh width a of the screen can be maintained even at the upstream end. As a result, the inflow prevention plate that has been conventionally installed to prevent the inflow to this portion is not required in the disc screen of the present invention.
[0018]
Furthermore, as shown in FIG. 1, in the apparatus in which the disc screen S and the crusher C of the present invention are attached to the same frame F, the disc of the crusher C is different from a conventional crusher with a disc screen. Since the cutter blade and the disk 12 of the disk screen S are alternately meshed with each other and are provided in the integrated frame F, the dust carried in the direction of the crusher by the disk screen directly flows into the crusher, and the disk screen Garbage retention at the downstream end can be prevented.
Also, since the frame is integrated, both drive units can be shared, and there is no extra space (dead zone) between the disc screen and the crusher, so it can be installed even in narrow waterways. It is possible, it is easy to secure a water passage area, and installation is also easy.
[0019]
Further, the disc screen S configured as described above is provided with water level detection devices before and after the disc screen S at the intake port where the screen S is installed, and the difference between the front and rear water levels becomes a predetermined value or more. , Configured to start, and provided with a device that recognizes the image pattern of the water surface in front of the disc screen (inflow side), when dust is captured by the disc screen and the image of the staying state exceeds the set pattern, Configure to start.
Further, an overload detection device is provided, and when an overload is detected by a disk screen, the crusher C and the disk screen S are reversely rotated for a predetermined time and then rotated forward. This is done by eliminating this overload or repeating this operation up to a set number of times.
Thereby, a big effect is acquired in the operational efficiency improvement of a crusher, and prevention of the accident of a machine.
[0020]
【The invention's effect】
According to the present invention, the disc-shaped cutter teeth of the crusher and the disc of the disc screen having the above structure are provided in the same integrated frame, and these are alternately meshed with each other. Since there is no dead zone between them, the installation area is reduced, it is possible to install even in narrow waterways, and the waste carried by the disc screen moves directly to the crusher, so these wastes are moved to the downstream end of the disc screen. However, it is crushed without staying as in the prior art, the drive device can be shared, and installation is easy.
[0021]
In particular , since the thickness of the disk in the upstream end row of the disk screen is increased, the effective screen width of the screen is maintained even at the end portion, and in order to adjust this by the thickness of the disk, The pitch does not go wrong, which eliminates the need for an inflow prevention plate that prevents the inflow of dust into this location, which has been required in the past. Installation cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a crushing apparatus using a disk screen of the present invention.
FIG. 2 is a front view showing a disk screen of the present invention.
FIG. 3 is a schematic view of a conventional crusher with a disk screen.
FIG. 4 is a schematic view of a conventional disk screen.
[Explanation of symbols]
S disc screen C crusher F frame 1 cylindrical screen unit 11 rotating shaft 12 disc 13 plate disc 2 cutter unit 21 rotating shaft 22 disc shaped cutter tooth

Claims (1)

A plurality of cylindrical screen units formed by fixing a large number of discs to a rotating shaft at predetermined intervals, and a plurality of cylindrical screen units arranged so that the discs of adjacent cylindrical screen units overlap with each other; The disk-shaped cutter teeth of the cylindrical screen unit at the downstream end of the disk screen and the disk-shaped cutter teeth of the crusher are alternately formed. In the crushing apparatus using the disk screen provided so as to mesh with each other, the effective screen width of the screen is made equal for each disk between adjacent cylindrical screen units, and the disk of the cylindrical screen unit at the upstream end is made uniform. Increase the thickness and overlap the disc of the next row cylindrical screen unit. Spacing disk is crushing apparatus using a disc screen, characterized in that set so that the screen effective cell width.

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