KR20200087072A - Crushing machine with screen, controller of crushing machine with screen and operating method of crushing machine with screen - Google Patents

Abstract

An object of the present invention is to provide a crusher with a screen which can perform crush processing while reducing a load applied on a crusher main body when an operation of the crusher main body of the crusher with the screen deviates from a normal operation, a control device of the crusher with the screen, and an operation method of the crusher with the screen. There are also provided a crusher with a screen, a control device of the crusher with the screen, and an operation method of the crusher with the screen, wherein the crusher with the screen comprises a crusher for crushing contaminants in a conduit, a screen part for transferring the contaminants to the crusher, and a control part for controlling operations of the crusher and the screen part. When the operation state of the crusher is changed from a normal operation, the control part changes the operation of the screen part. By this constitution, the operation method performs operation control for changing the operation state of the screen part according to the operation state of the crusher, limits a transfer amount of contaminants from the screen part, and can perform crush processing while reducing a load applied on the crusher.

Description

Screen mounted crusher, control device of screen mounted crusher and operation method of screen mounted crusher{CRUSHING MACHINE WITH SCREEN, CONTROLLER OF CRUSHING MACHINE WITH SCREEN AND OPERATING METHOD OF CRUSHING MACHINE WITH SCREEN}

This application claims priority based on Japanese Patent Application No. 2019-002984, filed on January 10, 2019. The entire contents of the application are incorporated herein by reference.

The present invention relates to a crusher, a control device for a crusher and a method for operating the crusher, which are installed in a waterway such as a sewage treatment plant to crush contaminants such as sludge floating in the water. More specifically, a screen-mounted crusher, screen-mounted to capture contaminants, such as sludge floating in the water, into the screen portion, scrape the captured debris into the crusher by means of a rotary lake, and crush the contaminants with a crusher. It relates to a control device for a crusher and a method for operating a screen-mounted crusher.

Screening crushers for crushing contaminants such as sludge suspended in water are installed in waterways such as sewage treatment plants. The screen-mounted crusher installed in the waterway includes, in addition to a crusher for crushing contaminants, a screen portion for capturing contaminants, and a rotating lake portion for scraping contaminants captured in the screen portion with a crusher, and the entire waterway The contaminants flowing over the width can be crushed by scraping with a crusher.

For example, Patent Literature 1 discloses a screen device and a device for cross-installing a crusher installed on one side of the screen device on a water channel and collecting contaminants in the water with a crusher. This screen device is composed of an arcuate screen member in which a slit is formed in a vertical direction, and a rake group rotating between the arcuate screen member, and composed of a rotating rake axis in the vertical direction. , By installing the rake shaft eccentrically with the center of the outer periphery of the screen, the tip portion of the rake emerges from the outer periphery of the screen, and the contaminants captured on the screen are scraped by the crusher.

Patent Document 1: Japanese Patent Application Publication No. Hei 11-324101

In the screen-mounted crusher such as Patent Document 1, when the operation of the crushed basic body deviated from the normal operation due to an increase in the load on the crushed basic body, such as a bite of a contaminant, the operation of the screen-mounted crusher was stopped to remove the contaminant that was the cause. . However, stopping the operation of the screen-mounted shredder whenever the operation of the crushing base body deviates from the normal operation causes a problem that the processing efficiency is lowered, and contaminants in the water to be treated are other places other than the crushing base body (without waterway). Screen portion, etc.).

Therefore, in the case where the operation of the crushing basic body deviates from the normal operation, it is required to reduce the load on the crushing basic body without stopping the operation of the screen-mounted crusher immediately, and to continue the crushing process. In addition, even if the screen-mounted crusher is stopped, it is required that the load on the crushing base body is reduced when resuming.

An object of the present invention is that when the operation of the crushing base body of the screen-mounted crusher deviates from normal operation, a screen-mounted crusher capable of performing crushing treatment while reducing the load on the crushing basic body, a control device and screen for a screen-mounted crusher It is to provide a method of operating the installed crusher.

As a result of earnestly examining the above-mentioned subject, the present inventor, in a screen-mounted crusher having a crusher and a screen portion, includes a control unit for controlling operation of the crusher and the screen portion, and when the operation of the crusher is changed from normal operation, By changing the operation, the load on the crusher is reduced, and it has been found that a crushing treatment can be carried out to complete the present invention.

That is, the present invention is a screen-mounted crusher, a control device for a screen-mounted crusher, and a method for operating the screen-mounted crusher.

The screen-mounted crusher of the present invention for solving the above problems includes a crusher for crushing contaminants in a waterway, a screen unit for transferring the contaminants to the crusher, and a control unit for controlling operation of the crusher and the screen unit, wherein the control unit is a crusher When the operation state of is changed from normal operation, it is characterized in that the operation of the screen unit is changed.

According to this screen-mounted crusher, by performing operation control to change the operating state of the screen portion in accordance with the operating condition of the crusher, the amount of contaminants transferred from the screen portion is restricted, and the crushing process is performed in a state where the load on the crusher is reduced. I can do it.

In addition, as one embodiment of the screen-mounted crusher of the present invention, the change in the operation of the screen unit in the control unit has the feature of stopping the operation of the screen unit.

According to this feature, according to the operating state of the crusher, by stopping the operating state of the screen portion, it is possible to further carry out the crushing treatment in a state in which the transfer amount of contaminants from the screen portion is further reduced and the load on the crusher is effectively reduced.

In addition, as one embodiment of the screen-mounted crusher of the present invention, the control unit has a feature that the operation of the screen unit is normal operation when the operating state of the crusher returns to normal operation.

According to this feature, when the operation state of the shredder returns to normal operation, the operation of the screen section is also set to the normal operation, whereby the original processing ability of the screen-mounted shredder can be quickly exhibited.

The control device for the screen-mounted crusher of the present invention for solving the above problems is a control device for a screen-mounted crusher provided in a screen-mounted crusher having a crusher for crushing contaminants in a waterway and a screen portion for transferring contaminants to the crusher, The control device includes a control unit for controlling the operation of the shredder and the screen unit, and the control unit is characterized in that the operation of the screen unit is changed when the operation state of the shredder is changed from normal operation.

According to this feature, according to the operating state of the crusher, operation control is performed to change the operating state of the screen section, limiting the amount of contaminants transferred from the screen section, and enabling crushing processing while reducing the load on the crusher. The control technology can be used in various screen-mounted crushers. In particular, by applying to the existing screen-mounted crusher, it is possible to update the screen-mounted crusher to enable the shredding process that reduces the load on the crusher by a simple mounting operation without updating the entire screen-mounted crusher. .

The operation method of the screen-mounted crusher of the present invention for solving the above problems is a screen equipped with a crusher for crushing contaminants in a waterway, a screen unit for transferring contaminants to the crusher, and a control unit for controlling operation of the crusher and screen unit As a method of operating the crusher, it is characterized in that it comprises a step of changing the operation of the screen unit when the operating state of the crusher is changed from normal operation.

According to this feature, according to the operating state of the crusher, there is provided a process of changing the operating state of the screen portion, and the crushing treatment can be performed in a state in which the amount of contaminants from the screen portion is restricted and the load on the crusher is reduced. have.

According to the present invention, when the operation of the crushing basic body of the screen-mounted crusher is out of normal operation, a screen-mounted crusher capable of performing crushing treatment in a state in which the load on the crushing basic body is reduced, a control device for the screen-mounted crusher and a screen-mounting device It is possible to provide a method of operating the crusher.

1 is a schematic explanatory diagram showing the structure of a screen-mounted crusher of a first embodiment of the present invention.
2 is a flowchart showing the operation control of the screen-mounted crusher of the first embodiment of the present invention.
3 is a flowchart showing another operation control of the screen-mounted crusher of the first embodiment of the present invention.
4 is a flowchart showing another operation control of the screen-mounted crusher of the first embodiment of the present invention.
5 is a schematic explanatory diagram showing the structure of a screen-mounted crusher of a second embodiment of the present invention.
6 is a schematic explanatory diagram showing the structure of a screen portion in the screen-mounted crusher of the second embodiment of the present invention.
7 is a flowchart showing the operation control of the screen-mounted crusher of the second embodiment of the present invention.
8 is a schematic explanatory diagram showing the structure of a screen-mounted crusher of a third embodiment of the present invention.
9 is a schematic explanatory diagram showing the structure of a screen-mounted crusher of a fourth embodiment of the present invention.

Hereinafter, embodiments of a screen-mounted crusher, a control device for a screen-mounted crusher, and an operation method of a screen-mounted crusher according to the present invention will be described in detail with reference to the drawings. Note that the description of the operation method of the screen-mounted crusher according to the present invention will be replaced by the description of the operation control of the screen-mounted crusher according to the present invention.

However, the screen-mounted crushers and control devices for screen-mounted crushers described in the embodiments are merely exemplified to explain the screen-mounted crushers and control devices for screen-mounted crushers according to the present invention, but are not limited thereto. In addition, the operation method of the screen-mounted crusher described in the embodiment is only exemplified to explain the operation method of the screen-mounted crusher using the screen-mounted crusher and the control device for the screen-mounted crusher according to the present invention, and is limited to this. It does not work.

The screen-mounted crusher of the present invention is installed in a water channel and used to treat contaminants in the water to be treated flowing through the water channel. For example, as a waterway, a sedimentation site, such as a sewage treatment plant, etc. are mentioned, and as a contaminant, sludge contained in sewage, such as sewage, etc. are mentioned. However, the structure of the water channel described in the embodiment is merely exemplified to describe the screen-mounted crusher according to the present invention, and is not limited thereto.

[First Embodiment]

(Screen mounted crusher)

1 is a schematic explanatory diagram showing the structure of a screen-mounted crusher in the first embodiment of the present invention. However, the arrow of the dashed-dotted line in FIG. 1 shows that it is connected so that control is possible.

The screen-mounted crusher 100A of the first embodiment of the present invention includes a crusher 1 for crushing contaminants G contained in the water to be treated flowing through the water channel R, and a contaminant G by the crusher 1 ), and a control unit 3 for controlling the operation of the screen unit 2 and the crusher 1 and the screen unit 2. The crusher 1 is arranged on one side of the screen portion 2. Moreover, the crusher 1 and the screen part 2 are provided close to each other so that the water channel R may be traversed.

The crushing machine 1 is for crushing the contaminants G in the water to be treated flowing in the water passage R. In addition, the crusher 1 should just be arrange|positioned in the water channel R so that the contaminant G may be conveyed from the screen part 2, For example, as shown in FIG. 1, the screen part 2 and the water channel ( What is provided between the side walls R2 of R) is mentioned. As the crushing machine 1 of the present invention, any crushing machine may be used, and examples thereof include a vertical biaxial crushing machine and a horizontal crushing machine.

As the crusher 1 of this embodiment, a vertical crusher is used. Thereby, there is an advantage that the shredder 1 can be installed evenly in the height direction of the screen portion 2.

In the crusher 1, as shown in FIG. 1, an inlet 11 for introducing water to be treated is formed on the front side (upper side of the city), and an outlet 12 for discharging water to be treated is disposed on the rear face. Is formed. In addition, the crusher 1 is an axis extending in the vertical direction (vertical direction of the ground), and supports the two rotating crushing blades 13a, 13b so as to be rotatable, so that the blades can be engaged with each other ( It is juxtaposed in the width direction in R). Further, the crushing machine 1 is provided with a driving portion 14 on its upper portion for rotationally driving the rotating crushing blades 13a and 13b. However, as the drive unit 14 of the present embodiment, a vertical electric motor is provided.

Then, the crushing machine 1 is driven by the driving unit 14 (vertical electric motor), so that the rotating crushing blades 13a and 13b rotate in the direction in which the contaminants G are rolled, and the object to be processed is introduced from the introduction port 11. By introducing water, the contaminant (G) in the water to be treated and the contaminant (G) transferred from the screen portion (2) are sandwiched between the rotating crushing blades (13a, 13b) and crushed, and are discharged from the outlet (12) to the downstream side. Release. However, as shown in Fig. 1, in the shredder 1 of the present embodiment, the drive unit 14 is driven with a predetermined output, the rotary shredding blade 13a rotates in a right turn, and the rotary shredding blade 13b By rotating in this left turn, the contaminants G are crushed. In addition, the operating state of the crusher 1 at this time is called normal operation of the crusher 1.

The screen part 2 is for conveying the contaminants G to the crusher 1. The screen portion 2 of the present embodiment includes a screen 4 for capturing the contaminants G and a rotating lake portion for scraping the contaminants G captured by the screen 4 with the shredder 1. 5).

The screen 4 is constituted by a plurality of screen members stacked in a substantially vertical direction, and each screen member is spaced apart. The water to be treated flowing in from the upstream of the screen 4 passes through the gap between the screen members, and a contaminant G larger than the gap between the screen members is captured on the upstream side of the screen 4. However, any member constituting the screen 4 may be used, for example, a plate member or the like in which a plurality of slits are formed substantially horizontally.

In the screen 4, the end of the other side (opposite to the shredder 1) is fixed to the side wall R1 of the water channel R, and one side (the shredder 1 side) is the water channel R It is formed to extend to approximately the center of the arc, and forms an arc portion curved in an arc shape toward the downstream side from the center of the channel R. Then, one side of the screen 4 is fixed to the side of the casing at the center of the water channel of the crusher 1.

However, the shape of the screen 4 is preferable to have an arc portion from the viewpoint of capturing and conveying efficiency of the contaminant G, but is not limited thereto. For example, one having an arcuate portion formed by a curved line from the center of the water channel R toward the downstream side may be used.

As described above, the screen 4 forms an arc portion on one side (the crusher 1 side), and the arc portion extends to an upstream region of the crusher 1. Thereby, the contaminant G captured by the screen 4 can be appropriately guided to the position where the blade of the crusher 1 engages.

The rotating lake part 5 is composed of a rotating shaft 52, a plurality of rakes 51 fixed to the rotating shaft 52, and a driving unit 53 for rotationally driving the rotating shaft 52. The rake 51 is a flat plate having a thickness capable of passing through the gaps of the stacked screen members, and the rotation lake portion 5 is provided with a gap formed in the screen 4 and an equal number of rakes 51 in the height direction. . In addition, the rotation of the rake 51 by the driving unit 53 in the direction of transporting the contaminant G to the crusher 1 side is referred to as electrostatic operation of the rotating lake unit 5, and in particular, the rake When the rotational speed of (51) is within a predetermined range, it is called normal operation.

The rake 51 of the rotary lake part 5 is for scraping the contaminants G. The material of the rake 51 is preferably made of an elastic body such as rubber or plate spring, and particularly preferably made of hard rubber. As a result, when a hard material such as wood is sandwiched between the contaminants G, the rake 51 is elastically deformed, so that damage to the rake 51 can be suppressed.

The shape of the rake 51 is not particularly limited as long as it can scrape contaminants. For example, as shown in FIG. 1, the tip end portion of the rake 51 has a length in the radial direction of the end portion on the surface side relative to the rotation direction of the rake 51 during electrostatic operation, and a radial direction in the opposite end portion on the opposite side. What is said to have a longer inclined surface 51a is mentioned. Thereby, there is no case that the contaminants G are aggregated at the tip of the rake, and can be efficiently transported. Moreover, as shown in FIG. 5 which will be described later, the first and second inclined surfaces may be provided on the tip end side of the rake 51.

A plurality of rakes 51 are fixed to the rotating shaft 52 of the rotating lake portion 5, and are provided eccentrically with the center of the arc portion of the screen 4. When the rotation shaft 52 is rotationally driven by the driving unit 53 and the rake 51 is rotated around the rotation shaft 52, the rake 51 protrudes from between the screen members. Then, while the rake 51 protrudes from the outer circumferential surface of the screen 4, the contaminant G captured by the screen 4 is scraped and flows into the crusher 1.

The fixed position of the rake 51 with respect to the rotating shaft 52 is not particularly limited as long as the gap formed on the screen 4 and the same number of rakes 51 are arranged in parallel in the height direction. For example, it is mentioned that all the rakes 51 are arranged in a line with respect to the rotating shaft 52. This facilitates the design and assembly of the rotary lake 5. Moreover, what is arrange|positioned so that the angle of the rake 51 may be shifted with respect to the rotating shaft 52, and it may become radial or spiral. Thereby, the amount of the contaminants (G) to be transferred to the crusher 1 is dispersed, it is possible to suppress the processing of a large amount of contaminants (G) on the crusher 1 at a time, and it is possible to suppress the bite of the contaminants (G). At this time, the plurality of rakes 51 may be used as rake groups, and the angles may be fixed to be shifted for each rake group. Thereby, it becomes possible to reduce the scraping power of the contaminant G.

The driving part 53 of the rotating lake part 5 rotates the rotating shaft 52. The drive unit 53 is not particularly limited as long as it can rotate and drive the rotating shaft 52. For example, similar to the drive part 14 of the crusher 1, what uses a vertical electric motor is mentioned.

In addition, the driving portion 53 of the rotating lake portion 5 drives the rotational speed of the tip of the rake 51 to be slower than the rotational speed of the outer circumference of the rotating crushing blades 13a, 13b of the crusher 1. For example, it is preferable that the rotational speed of the tip of the rake 51 is 70% or less of the rotational speed of the outer circumference of the rotating crushing blades 13a, 13b of the crusher 1. Thereby, the contaminant G scraped by the rake 51 is easily drawn into the crusher 1, and the contaminant G can be more efficiently and reliably transferred to the crusher 1.

However, the rotating lake part 5 of the present invention may be of any configuration as long as it can scrape the contaminants G captured by the screen 4 with the shredder 1, in accordance with the shape of the screen 4 It can be properly designed. For example, in addition to the configuration consisting of the rotating shaft 52 and the rake 51, such as the rotary lake portion 5 of the first embodiment, the rake, like the circumferential lake portion 8 of the third embodiment described later, And a structure in which the attached chain and a plurality of sprockets for circling the chain are provided.

Like the rotating lake portion 5 of the first embodiment, the rotating lake portion 5 formed by the rotating shaft 52 and the rake 51 radially mounted from the rotating shaft 52 fits like a chain and a sprocket There is no structure such as a bite, and since it is a simple structure, there is an advantage in that trouble such as clogging of contaminants on the rotating lake part 5 is unlikely to occur.

As described above, by rotating the rotating lake portion 5 by the driving unit 53, the contaminant G captured on the screen 4 is scraped by the crusher 1, and the contaminant G is crushed. (1) can be crushed.

(Control unit (control device for screen-mounted crusher))

The control unit 3 controls the operation of the shredder 1 and the screen unit 2. Further, the control unit 3 independently controls the operating state of the shredder 1 and the operating state of the screen unit 2, respectively.

The control unit 3 may be directly connected to the shredder 1 and the screen unit 2 by wiring or the like, or may be connected indirectly through communication technology such as radio.

The control unit 3 of the present embodiment includes a determination unit 31 for determining the operation state of the shredder 1, a shredder operation control unit 32 for controlling the operation state of the shredder 1, and a screen unit 2 It has a screen unit operation control unit 33 for controlling the operation state of the. However, in FIG. 1, although the crushing machine operation control part 32 and the screen part operation control part 33 exemplify that they are not connected to each other so as to be controllable, the operation state of the crusher 1 and the operation of the screen part 2 It is sufficient that it is possible to independently control the states, but it is not limited thereto.

The determination unit 31 determines the operating state of the shredder 1, and uses the determination result as a reference for controlling the operation of the shredder 1 and the screen unit 2. The operating state of the shredder 1 is, in addition to normal operation or operation stop, in addition to the increase or decrease in the operation amount of the shredder 1 (output of the driving unit 14) to increase or decrease in load, or the bite of foreign matter such as contaminants G. When the overload is detected by this, the crusher 1 indicates an operation of repeating an electrostatic operation and a reversing operation (hereinafter referred to as a "biting operation") or the like.

The determining unit 31 is a means for determining the operating state of the crusher 1, and is not particularly limited. For example, the shredder 1 means for detecting a foreign object such as a contaminant G, a means for detecting an increase or decrease in the output of the driving unit 14 of the shredder 1, or an operation schedule of the screen-mounted shredder 100A. On the basis of this, there may be mentioned means for determining the operating state of the crusher 1 and the like. Specifically, a mechanism for detecting an overload in the shredder 1 is provided, a mechanism for reading the output of the drive unit 14 of the shredder 1 is provided, and a screen-mounted shredder 100A is operated. Examples include inputting and storing schedules (schedules for regular maintenance, schedules for starting and ending processing, etc.), and providing a mechanism for determining the driving conditions based on these driving schedules.

In addition, the determination unit 31 is provided with a function for accepting an operation command from the outside to the shredder 1 and the screen unit 2, and the operating state of the shredder 1 in response to the content of the operation command from the outside And it is good also as making judgment regarding the operation state of the screen part 2.

The shredder operation control unit 32 controls the operating state of the shredder 1. However, the control of the operating state of the shredder 1 refers to control of driving/stopping, deceleration/acceleration, and rotational directions of the rotary shredding blades 13a, 13b of the shredder 1. The means for controlling the operating state of the crusher 1 is not particularly limited. For example, a means for controlling the output of the drive unit 14 of the crusher 1 by means of an on-off switch mechanism, an inverter, or the like can be mentioned.

The screen unit operation control unit 33 controls the operation state of the screen unit 2. However, the control of the operation state of the screen unit 2 refers to control of driving/stopping, deceleration/acceleration, and rotational directions of the rotary lake unit 5. The means for controlling the operation state of the screen portion 2 is not particularly limited. For example, a means for controlling the output of the drive unit 53 of the rotary lake unit 5 by an on-off switch mechanism, an inverter, or the like can be mentioned.

However, the configuration of the control unit 3 may be independent as the control device according to the present invention. This control device can be applied to an existing screen-mounted crusher. Thus, without updating the entire screen-mounted shredder, it is possible to provide a screen-mounted shredder and a method for operating the screen-mounted shredder of the present invention by a simple mounting operation.

(Operation control of screen mounted crusher)

The screen-mounted crusher of the present invention, the control device for the screen-mounted crusher, and the operating method of the screen-mounted crusher are to perform operation control according to the operating state of the crusher. Hereinafter, as an embodiment of the present invention, operation control suitable for each operation state of the crusher will be exemplified and described. However, descriptions and flowcharts in each operation control are merely examples of embodiments and are not limited thereto.

First, in the operating state of the shredder 1, the operation control in the case of a change from the normal operation by temporarily increasing the load will be described with reference to FIG. 2. However, Fig. 2 shows a flow chart of the present operation control.

When it is determined by the determination unit 31 of the control unit 3 that the output of the drive unit 14 in the shredder 1 exceeds the set value due to an increase in load during normal operation, the screen of the control unit 3 The sub-operation control section 33 changes the operation state of the screen section 2 to decelerate from normal operation. In this case, it is assumed that the operation of the crusher 1 continues.

In this way, when the operating state of the crusher 1 is changed from normal operation due to an increase in load, the operating state of the screen portion 2 is changed to decelerate from the normal operation to thereby reduce the crusher from the screen portion 2 ( The amount of contaminants (G) transferred to 1) decreases. Thereby, since no new contaminants G are supplied to the crusher 1, the load can be reduced. Therefore, it becomes possible to continue operation of the crusher 1 and to process the contaminants G on the crusher 1.

The deceleration of the operation state of the screen section 2 means that the speed is lower than the rotation speed of the rotation lake section 5 during normal operation, and stop of the rotation lake section 5 is also included. In particular, when the increase in load is based on the bite, it is preferable to stop the rotating lake portion 5. Thereby, the amount of the contaminants G transferred from the screen portion 2 to the crusher 1 can be further reduced to suppress the load and eliminate the bite state.

Further, after changing the operation state of the screen unit 2, after a certain period of time elapses, the operation unit of the shredder 1 is judged again by the determination unit 31, and the operation state of the shredder 1 is changed to normal operation. When it is judged that it has returned, the operation state of the screen unit 2 is returned to the normal operation by the screen unit operation control unit 33. On the other hand, when it is determined by the determination unit 31 that the operation state of the shredder 1 is not returning to normal operation (it is out of normal operation), the shredder operation control unit 32 operates the shredder 1 To stop.

That is, after reducing the amount of contaminants (G) transferred from the screen portion 2 to the crusher 1, the overload condition of the crusher 1 is resolved, and the operation of the crusher 1 returns to normal operation It is assumed that the screen portion 2 is also returned to normal operation. On the other hand, when the overload condition of the shredder 1 is not resolved and it has not returned to normal operation, it is assumed that the operation of the shredder 1 is stopped. However, after stopping the operation of the crusher 1, it is also possible to try to resolve the overload condition of the crusher 1 by other means.

In addition, after changing the operation state of the screen portion 2, the operation condition of the shredder 1 is judged by the determination portion 31, and it is judged that it has been changed from normal operation (that the overload condition has not been resolved). In some cases, the determination of the determination unit 31 may be repeated a predetermined number of times (n times (n is an arbitrary number)). In addition, when the overload condition is not resolved at a predetermined number of times, the operation of the crusher is stopped (not shown). Thereby, it is possible to avoid stopping the operation of the screen-mounted crusher 100A immediately, and to continue the crushing process.

As described above, when the operating state of the shredder 1 is changed from normal operation due to an increase in load, the operating state of the screen unit 2 is changed (decelerated or stopped), whereby the shredder is removed from the screen unit 2. (1) It is possible to reduce the amount of contaminants (G) to be transported. Thereby, since the new contaminant G is not newly supplied to the crusher 1, it is difficult to make a bite operation, and the operation of the crusher 1 can be continued. Further, after a predetermined time has elapsed, the operation state of the shredder 1 is judged, and when the operation state of the shredder 1 returns to normal operation, the operation of the screen unit can also be returned to the normal operation to continue the shredding process. On the other hand, when the operation state of the crusher 1 does not return to normal operation, it is possible to appropriately respond by stopping the operation of the crusher 1.

Next, a case where the operating state of the crusher 1 is stopped from normal operation will be described with reference to FIG. 3. However, Fig. 3 shows a flowchart of the present operation control.

The stoppage of the crushing machine 1 means that rotation of the rotating crushing blades 13a and 13b stops, and the reason for the stoppage is not particularly limited. For example, as the reason for the suspension, it may be any one of which is scheduled to be stopped in advance, such as periodic maintenance or the end of processing, or an unexpected stop due to failure or abnormality detection, etc. do. In addition, the criteria for determining the stop are based on an operation command from the outside, what is scheduled to be stopped in advance, and determining that the output of the drive unit 14 exceeds a value set as a safe driving range. Can.

When it is determined that the operation of the shredder 1 is stopped by the determination unit 31 of the control unit 3, the operation state of the screen unit 2 is normally controlled by the operation control unit 33 of the screen unit of the control unit 3. Change to stop from driving. After a certain period of time has elapsed, the operation of the crusher 1 is stopped by the crusher operation control unit 32.

Thus, when the operating state of the shredder 1 stops from normal operation, the operating state of the screen portion 2 is stopped from the normal operation prior to the shredder 1, thereby crushing the shredder 1 from the screen portion 2 The transfer of contaminants (G) to the furnace is stopped. Thereby, since the new contaminant G is not supplied to the crusher 1, it becomes possible to stop the crusher 1 after processing the contaminant G on the crusher 1. By stopping without leaving the contaminants G on the crusher 1, it becomes possible to smoothly perform the re-operation of the crusher 1. In addition, it is also possible to obtain an effect of suppressing corrosion and the like of the crusher 1 due to deterioration of the contaminants G remaining on the crusher 1.

However, in this embodiment, when the operation of the crusher 1 is stopped, it is sufficient to stop the supply of new contaminants G from the screen portion 2, for example, the operation of the screen portion 2 to be stopped. The operation of the and the crusher 1 may be stopped at the same time.

Next, a case in which the operating state of the crusher 1 is changed from stop to start of operation will be described with reference to FIG. 4. However, Fig. 4 shows a flowchart of the present operation control.

The operation start of the crushing machine 1 means rotating the rotating crushing blades 13a, 13b in a stationary state to be in a normal operation state, and the reason for the operation start is not particularly limited. For example, after the regular maintenance is finished, re-operation of the screen-mounted crusher is performed, or the cause of the failure or abnormality detection is eliminated, and re-operation is performed. In addition, the criteria for starting the operation may be based on an operation command from the outside, or based on the operation schedule of a screen-mounted shredder (at the time of scheduled maintenance end, when supply of water to be processed, etc.). have.

When it is determined by the determination unit 31 of the control unit 3 that operation of the stopped shredder 1 starts, the operation state of the shredder 1 is stopped by the shredder operation control unit 32 of the control unit 3 Let's assume normal operation. After a certain period of time has elapsed, the screen unit 2 is set to normal operation from the stop by the screen unit operation control unit 33.

In this way, when the operating state of the shredder 1 is from normal to normal operation, the operating state of the shredder 1 is set to the normal operation before the screen unit 2, thereby making the shredder 1 from the screen unit 2 Before the transfer of the furnace contaminant (G) begins, the contaminant (G) on the crusher (1) can be processed. Then, after a certain period of time, by making the screen portion 2 normal operation, the operation of the crusher 1 can be smoothly performed.

However, in the present embodiment, when the operation of the crusher 1 is started, it is sufficient as long as a new contaminant G is supplied from the screen portion 2, for example, the start and operation of the crusher 2 and the crusher. It is also possible to start (1) simultaneously.

As described above, by performing operation control according to each operation state of the crusher 1, the crushing process can be performed in a state where the load on the crusher 1 is reduced. In addition, all of these operation controls may be automatically executed by the control unit 3 as a control program, or may include manual operation of an operator. However, from the viewpoint of reducing the effort of the worker, it is more preferable to use automatic control by the control program.

[Second Embodiment]

5 is a schematic explanatory diagram showing the configuration of a screen-mounted crusher of a second embodiment of the present invention.

The screen-mounted shredder 100B of the second embodiment is a driving unit 14 of the shredder 1 of the screen-mounted shredder 100A of the first embodiment, and rotates the shredding blades 13a, 13b in the reverse direction from normal operation. ) Has a function of performing a reverse rotation operation, and in addition to the electrostatic operation which rotates in the direction of conveying the contaminant (G) to the crusher (1) side in the drive unit 53 of the rotary lake unit 5, It is equipped with a function of performing an electrostatic operation and a reverse operation rotating in the reverse direction. However, the screen-mounted crusher 100B in FIG. 5 shows the operation at the time of reversing operation of the rotary lake 5. Incidentally, among the configurations of the screen-mounted shredder 100B in the present embodiment, the same description as those of the screen-mounted shredder 100A of the first embodiment will be omitted.

A part of the contaminant G transferred to the crushing machine 1 may not be crushed and may be bitten between the rotating crushing blades 13a and 13b. Therefore, in order to prevent the bite of the transported contaminant G, or to remove the bitten contaminant G, the crusher 1 of this embodiment is supposed to have functions capable of normal operation and reverse operation.

In addition, a part of the contaminant G captured by the screen portion 2 is caught by the rotation of the rotating lake portion 5 and does not flow into the crusher 1 but is deposited on the downstream side of the screen 4 have. In addition, the contaminant G may be caught in the gap between the screen members of the screen 4. Therefore, in order to remove the deposited contaminant G or the bitten contaminant G, the rotary lake 5 of this embodiment is supposed to have functions capable of electrostatic operation and reverse operation. Hereinafter, the reverse operation of the rotary lake 5 will be described in detail.

By reversing the rotating lake portion 5 by the driving unit 53, the contaminants G deposited on the downstream side of the screen 4 can be collected and collected by the lake 54. Then, the lumps G collected together are transferred to the upstream side along the outer circumferential surface of the screen 4 by the rake 54 for reversing operation.

The contaminant G transferred along the outer circumferential surface of the screen 4 is peeled off from the rake 54 when the rake 54 is received inside the screen 4 on the upstream side, and on the outer circumferential surface of the screen 4 Remains. Then, the contaminant G remaining on the outer circumferential surface of the screen 4 is scraped and shredded by the crusher 1 when the electrostatic operation is resumed.

In addition, when reversing the rotating lake portion 5, when the rake 54 is accommodated inside the screen 4, the rake 54 is caught and may enter the inside of the screen portion 2.

Therefore, as shown in FIG. 5, the shape of the rake 54 is a first inclined surface 54a that intersects the outer peripheral surface and the acute angle of the screen 4 on the front portion (rear surface during the electrostatic operation) during reverse operation. And a second inclined surface 54b. That is, when the rake 54 to reverse operation protrudes from the outer circumferential surface of the screen portion 2, the inclined surfaces 54a and 54b are inclined toward the rear in the traveling direction.

When the rake 54 is accommodated in the inside of the screen portion 2, the contaminants G are easily caught at the tip, and the action to be drawn into the inside of the screen portion 2 is strong. Therefore, it is preferable to decrease the inclination angles of the inclined surfaces 54a and 54b, while the action of aggregating the contaminants G is also reduced. Therefore, it is preferable that the inclination angle of the first inclined surface 54a formed at the tip of the rake 54 is small, and the inclination angle of the second inclined surface 54b formed adjacent to the first inclined surface 54a is larger than the first inclined surface. . As a result, it is possible to suppress the jamming of the contaminant G on the first inclined surface 54a, and improve the performance of aggregating the contaminant G on the second inclined surface 54b.

6 is a schematic explanatory diagram of the screen portion 2 in the screen-mounted crusher 100B of the present embodiment. 6, the inclined surfaces 54a and 54b will be described in detail. As shown in FIG. 6, the rake 54 has the 1st inclined surface 54a and the 2nd inclined surface 54b from which the inclination angle with respect to the outer peripheral surface of the screen part 2 differs.

The angle of inclination α of the first inclined surface 54a is not particularly limited, but is preferably 1 to 60°, and particularly preferably 3 to 50°. In the case of less than 1°, since the angle γ formed between the first inclined surface 54a and the second inclined surface 54b decreases, a contaminant in the angle between the first inclined surface 54a and the second inclined surface 54b (G) is liable to be caught, and when it exceeds 60°, since the inclination angle becomes large, the contaminant G is liable to be caught at the tip of the rake 54.

Although the inclination angle β of the second inclined surface 54b is not particularly limited, 20 to 89° is preferable, and 30 to 70° is particularly preferable. In the case of less than 20°, the action of aggregating the contaminants G is small, so that the contaminants G may not be removed. On the other hand, when it exceeds 89°, the action of introducing the contaminant G into the inside of the screen portion 2 is increased, and thus the contaminant G may be introduced into the inside of the screen portion 2.

Further, the angle γ formed by the first inclined surface 54a and the second inclined surface 54b is not particularly limited, but is preferably 95 to 175°, particularly preferably 110 to 165°. In the case of less than 95°, the contaminant G is likely to be caught at the angle formed by the first inclined surface 54a and the second inclined surface 54b, and when it exceeds 175°, the first inclined surface 54a and the second inclined surface Since each inclined surface of (54b) becomes almost equivalent inclined angle, the effect of providing the first inclined surface 54a and the second inclined surface 54b becomes small.

However, in the present invention, when the outer circumferential surface of the screen portion 2 is curved, the angle (inclination angle) formed by the outer circumferential surface of the screen portion 2 and the inclined surface is the tangent T and the inclined surface of the screen portion 2 Refers to the angle that makes up.

(Operation control of screen mounted crusher)

Next, the operation control of the screen-mounted crusher of this embodiment will be described. In the screen-mounted crusher of this embodiment, it is assumed that in addition to the same operation control as in the first embodiment, operation control regarding the reverse operation of the crusher 1 and the screen portion 2 is performed.

Hereinafter, the operation control in this embodiment other than the operation control shown in 1st Embodiment is illustrated and demonstrated. However, descriptions and flowcharts in each operation control are merely examples of embodiments and are not limited thereto.

Fig. 7 shows the operation control in the case of a change from the normal operation in order to prevent the bite of the contaminant G in the shredder 1 and the screen portion 2 during the normal operation of the crusher 1 It will be described with reference. However, Fig. 7 shows a flowchart of the present operation control.

During the normal operation of the crusher 1, after a certain time has elapsed, the operation state of the crusher 1 is set to reverse operation by the crusher operation control unit 32 of the control unit 3. Then, after the reverse rotation of the crusher 1 is executed a predetermined number of times, the crusher 1 is returned to normal operation. In addition, after a predetermined time has elapsed, the operation state of the screen unit 2 is reversed by the screen unit operation control unit 33 of the control unit 3. Then, after the reverse rotation of the screen unit 2 is executed a predetermined number of times, the screen unit 2 is returned to normal operation. Repeat this operation.

In this way, the crushers 1 and the screen unit 2 independently perform reversing and electrostatic operation every predetermined period of time, thereby entangling the contaminants G in the crushers 1 and the screen unit 2. It becomes possible to eliminate.

However, the conversion between the electrostatic operation and the reverse operation may not be due to elapse of time, but may be based on the determination result of the operation state of the shredder 1 by the determination unit 31 of the control unit 3. For example, when it is determined by the determination unit 31 that the load in the shredder 1 tends to increase, it is assumed that electrostatic and reverse operations of the shredder 1 and the screen unit 2 are performed. have. Thereby, a better effect on preventing the bite of the contaminant G in the crusher 1 and the screen portion 2 is obtained.

In the screen-mounted crusher according to the present invention, the structure of the crusher and the screen portion and the installation of the screen-mounted crusher are not particularly limited as long as they have a structure and arrangement that can capture and crush contaminants in the water channel. For example, Fig. 8 and Fig. 9 show another aspect of the screen-mounted crusher according to the present invention.

[Third Embodiment]

8 is a schematic explanatory diagram showing the configuration of a screen-mounted crusher according to a third embodiment of the present invention.

The screen-mounted crusher 100C of the third embodiment is a screen portion 6, a screen 7 having a long straight portion and a curved arc portion inclined in a downstream direction, and a chain equipped with a rake 83 ( 82), and two sprockets 81a, 81b for driving the chain 82, and a circumferential lake portion 8 having a drive unit 84. However, among the structures of the screen-mounted shredder 100C in the present embodiment, the same description as those of the screen-mounted shredder 100A of the first embodiment will be omitted.

As in the third embodiment, the screen-mounted crusher 100C having a chain and a circumferential lake portion 8 using a plurality of sprockets as the screen portion 6 can be installed regardless of the size of the width of the water channel R. have. Therefore, it is a screen-mounted crusher suitable for installation in a large water channel R.

The screen-mounted shredder 100C of the third embodiment controls the operation of the shredder 1 and the screen section 6 by the control unit 3. In addition, for the operation control for the screen-mounted crusher 100C, the same operation control as in the first and second embodiments can be performed.

[Fourth Embodiment]

9 is a schematic explanatory diagram showing the configuration of a screen-mounted crusher according to a fourth embodiment of the present invention.

The screen-mounted shredder 100D of the fourth embodiment is configured such that the shredder 1 and the screen section 2 are provided inside one case 9. In addition, the case 9 is provided with a concave fitting piece as a fitting mechanism 91 that can be simply installed in the water channel R. However, in Fig. 9, the structure relating to the screen portion 2 in the fourth embodiment is the same as the screen portion 2 in the first embodiment, but is not limited thereto. For example, it may be the same as the structure related to the screen portion 2 in the second embodiment. Incidentally, among the configurations of the screen-mounted crusher 100D in the present embodiment shown in FIG. 9, descriptions of the same components as those of the screen-mounted crusher 100A in the first embodiment will be omitted.

As in the fourth embodiment, the screen-mounted crusher provided with the fitting mechanism 91 simplifies the present invention by fitting the concave fitting piece and the convex fitting piece provided on the side wall of the water channel R. The screen-mounted crusher 100D can be installed in the water channel R.

The screen-mounted crusher 100D of the fourth embodiment controls the operation of the crusher 1 and the screen portion 2 by the control unit 3. In addition, for the operation control for the screen-mounted crusher 100D, the same operation control as in the first and second embodiments can be performed.

However, the above-described embodiment shows an example of a screen-mounted crusher, a control device for the screen-mounted crusher, and a method of operating the screen-mounted crusher. The screen-mounted shredder according to the present invention, the control device for the screen-mounted shredder, and the operation method of the screen-mounted shredder are not limited to the above-described embodiments and are not limited to the above-described embodiments, in the above-described embodiments The screen mounted crusher, the control device for the screen mounted crusher, and the operation method of the screen mounted crusher may be modified.

For example, in the screen-mounted crusher of the present embodiment, a structure for forming a flow of water to be treated to the crusher and/or the screen portion may be provided. For example, it is possible to provide an inclined surface on the side wall of the water channel. Thereby, while forming the flow of the water to be treated to the crusher and the screen portion, it is possible to prevent deposits of contaminants on the bottom of the side wall side of the water channel. In addition, it is possible to provide a water flow guide plate on the rake and rotate with the rotating shaft. Thereby, while forming a water stream from the screen portion toward the crusher, it is easy to remove the contaminants captured on the screen from the outer periphery of the screen.

By providing the structure as described above, the contaminants can be efficiently transferred to the crusher, and the contaminants can be crushed more reliably.

Further, for example, in the screen-mounted crusher of the present embodiment, a plurality of screen portions may be provided. Moreover, when providing a plurality of screen portions, it is preferable that each screen portion can be operated independently. Thereby, the screen parts can be operated with a time difference, the contaminants are dispersed, transferred to the crusher, and the load of the crusher can be reduced.

The screen-mounted crusher of the present invention, the control device for the screen-mounted crusher, and the operating method of the screen-mounted crusher can be used to treat contaminants in the water to be treated flowing through the waterway. Specifically, in a sedimentation site of a sewage treatment plant, it can be used for capturing and crushing contaminants such as sludge.

In addition, the control device for the screen-mounted shredder of the present invention can be provided by the existing screen-mounted shredder, thereby providing the screen-mounted shredder of the present invention by a simple mounting operation without updating the entire apparatus.

100A, 100B, 100C, 100D screen-mounted crusher
1 shredder
11 Introduction
12 outlet
13a, 13b rotary fracturing blade
14 Drive
2 Screen section
3 Control
31 judgment
32 Crusher Operation Control Unit
33 Screen Operation Control
4 screen
5 Rotary Lake
51 Lake
51a slope
52 axis of rotation
53 Drive
54 rake
54a first slope
54b 2nd slope
6 Screen section
7 screen
8 Weekly Lake
81a, 81b sprocket
82 chain
83 Lake
84 Drive
9 cases
91 Fitting Mechanism
G contaminant
R channel
R1, R2 sidewall

Claims (5)

A crusher that crushes contaminants in the waterway,
A screen unit for transporting contaminants to the crusher,
Control unit for controlling operation of the shredder and the screen unit
Equipped with,
The control unit, when the operation state of the shredder is changed from the normal operation, characterized in that for changing the operation of the screen, shredder equipped with a screen. According to claim 1,
The change of the operation of the screen unit in the control unit is characterized in that the operation of the screen unit is stopped. The method according to claim 1 or 2,
The control unit, when the operation state of the shredder returns to the normal operation, characterized in that the operation of the screen unit to the normal operation, screen-mounted crusher. A control device for a screen-mounted crusher provided in a screen-mounted crusher having a crusher for crushing contaminants in a waterway and a screen portion for transferring the contaminants to the crusher,
The control device includes a control unit for controlling the operation of the shredder and the screen unit,
The control unit, when the operation state of the shredder is changed from the normal operation, characterized in that for changing the operation of the screen unit, the control device of the screen-mounted shredder. A method of operating a crushing machine for crushing contaminants in a waterway, a screen-mounted crusher having a screen portion for transferring the contaminants to the crusher, and a control unit for controlling the operation of the crusher and the screen portion,
And a step of changing the operation of the screen unit when the operating state of the crusher is changed from normal operation.

Images