JPH07213939A - Method for controlling operation of refuse grinding and feeding apparatus - Google Patents

Abstract

PURPOSE:To correspond in detail to the quality of refuse and to feed continuously and quantitatively ground refuse into a refuse incinerator by a method wherein, when the detected value of the hydraulic pressure is higher than the standard hydraulic pressure, a supporting stage is separated from a refuse grinding rotor based on the positional correcting value and, when the detected value of the hydraulic pressure is lower, the supporting stage is made to approach to the refuse grinding rotor. CONSTITUTION:The detected value of the changed hydraulic pressure is detected by means of a pressure sensor and, when the positional correcting value is out of the range, the correcting value for the position of a supporting stage is obtd. based on a primary function f1 (x) by means of a supporting stage position adjustor 6. A signal of this positional correcting value is transmitted to the supporting stage position adjustor 6 and a proportion setting tool 7, and a rod of a hydraulic pressure cylinder 3 is stretched and contracted by actuating an electromagnetic pilot servo valve 8. A supporting stage 2 is thereby separated from or approaches to a refuse grinding rotor l by the positional correcting value from a standard position x0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of an operation control method of a dust crushing and feeding device for feeding crushed dust to an incinerator, and more specifically, to a dust crushing and feeding device and dust supplied to the dust incinerator. Even if there is a difference in hardness and adhesiveness, it is possible to continue stable operation of the waste crushing supply device and to supply crushed waste to the waste incinerator continuously and quantitatively. The present invention relates to an operation control method for a shredded waste crushing and supplying device.

[0002]

2. Description of the Related Art A waste incineration facility mainly comprises a waste crushing and feeding device for crushing waste, a waste incinerator for incinerating crushed waste supplied from the waste crushing and feeding device, and combustion exhaust gas generated by incineration of the waste. And an exhaust gas treatment device for treating the exhaust gas. The operation control method of the waste crushing and supplying device that supplies waste to the waste incinerator is as follows: (1) Stable incineration of waste in the waste incinerator. (2) To further reduce the concentration of various pollutants emitted from waste incineration facilities. (3) Make sure to incinerate a target amount of waste. In order to achieve such purposes, the amount of waste supplied to the waste incinerator is adjusted based on various process data obtained from the waste incinerator.

The waste crushing and feeding device is disclosed, for example, in Japanese Patent Publication No. 1-37649, Japanese Utility Model Publication No. 1-8843, and Japanese Patent Laid-Open No. 3-106456 filed by the applicant of the present application. By the way, in adjusting the amount of waste supplied by these refuse crushing and supplying devices, among the components of the waste crushing and supplying device, a method of mainly controlling only the number of revolutions of a rotating part having a function of adjusting the amount of refuse supplied to the refuse incinerator. Has been adopted. That is, the increase and decrease in the amount of waste supplied to the waste incinerator by the waste crushing and supplying device is as follows: Japanese Patent Publication No. 1-37649 discloses a screw conveyor, Japanese Utility Model Publication No. 1-8843 discloses a cutting screw conveyor, and Japanese Patent Laid-Open No. -1064
According to Japanese Patent Laid-Open No. 56, the rotation speed of a dust crushing rotor having a plurality of rotary blades on the outer peripheral portion is controlled.

[0004]

However, among the components of the refuse crushing and feeding device, only the method of controlling the rotational speed of the rotating part having the function of adjusting the amount of refuse supplied to the refuse incinerator can be constant. Since the quality of non-existing waste, that is, the hardness and stickiness of the waste, is not taken into consideration, simply controlling the rotation speed cannot adjust the amount of waste supplied to the waste incinerator as desired. This is because the following phenomena occur. Hereinafter, the above phenomenon will be described by taking as an example the dust crushing and feeding device disclosed in Japanese Patent Laid-Open No. 3-106456, which is filed by the applicant of the present application.

For example, in order to increase the amount of refuse supplied, a method of rotating the rotating portion at a high speed is naturally adopted, but if the refuse supplied to the refuse crushing and supplying device is hard, the inside of the crushing and supplying device is It is easy to get caught between the crushing blade provided on the rotating part of the machine and the fixed blade provided on the support table, resulting in overload and frequent stopping of the rotating part. However, the waste cannot be continuously supplied to the waste incinerator.

If the waste is soft and has low tackiness, the waste supplied to the waste crushing / feeding device easily passes between the crushing blades and a large amount of waste that is not sufficiently crushed is supplied to the waste incinerator. It In this way, when adjusting the amount of waste supplied to the waste incinerator, just controlling the rotational speed of the rotating part of the waste crushing and feeding device makes the amount of waste supplied to the waste incinerator unstable, As a result of making it difficult to stably burn the waste, it is not possible to reduce the concentration of pollutants in the exhaust gas, but there is a problem to be solved that a target amount of the waste cannot be incinerated. Of course, the amount of refuse supplied to the refuse incinerator changes depending on the quality of the refuse regardless of the increase or decrease in the number of rotations of the rotating portion of the refuse crushing and supplying device.

Therefore, it is an object of the present invention that the quality of waste that cannot be constant, that is, whether the supplied waste has a different hardness or the tackiness of the waste changes, It is an object of the present invention to provide a method for controlling the operation of a waste crushing / supplying device which makes it possible to supply the crushed waste to a waste incinerator continuously and quantitatively according to the quality of the waste.

[0008]

The present invention has been made in view of the above circumstances, and therefore, the gist of the operation control method of the dust crushing and supplying apparatus according to claim 1 of the present invention is to drive with a hydraulic motor. The crushing rotor to be provided, and the crushing rotor and a rotary blade arranged around the outer periphery of the crushing rotor to supply the crushing rotor to the crushing and feeding device. In the operation control method of the dust crushing and feeding device, which crushes the crushed dust between the crushing rotor and the fixed blade planted in the crushing rotor, and supplies the crushed dust to the refuse incinerator, the hydraulic oil supplied to the hydraulic motor. Of the hydraulic pressure value of the detected value, and from the detected hydraulic pressure value, the position correction value of the support base from the reference position with respect to the dust crushing rotor preset based on the reference hydraulic pressure is obtained, and the detected hydraulic pressure is higher than the reference hydraulic pressure. Is characterized in that the support base is moved away from the dust crushing rotor based on the position correction value, while the support base is moved closer to the dust crushing rotor based on the position correction value when the hydraulic pressure detection value is lower than the reference hydraulic pressure. And

Further, the gist of the operation control method of the refuse crushing and feeding device according to claim 2 of the present invention is that in the operation control method of the dust crushing and feeding device according to claim 1, from the position correction value of the support table to the external The rotation speed correction value with respect to the reference rotation speed of the dust crushing rotor set in advance by the setting device is determined, and when the support base is separated from the dust crushing rotor from the reference position based on the position correction value, the rotation speed correction value is set. While rotating the dust crushing rotor at a low speed based on the above, while the support base is approaching the dust crushing rotor from the reference position based on the position correction value, rotate the dust crushing rotor at a high speed based on the rotation speed correction value. It is characterized by

Further, the gist of the operation control method of the refuse crushing and feeding device according to claim 3 of the present invention is that in the operation control method of the dust crushing and feeding device according to claim 2, the rotation speed correction value of the dust crushing rotor is set. It is characterized in that it is corrected by process data obtained from a refuse incinerator including a refuse incinerator that incinerates the refuse crushed by the refuse crushing supply device and an exhaust gas treatment device that treats combustion exhaust gas.

[0011]

According to the operation control method of the refuse crushing and feeding apparatus according to the first aspect of the present invention, when hard or high-adhesive dust is fed to the dust crushing and feeding apparatus, the load on the dust crushing rotor increases, Although the hydraulic pressure of the hydraulic oil supplied to the hydraulic motor that drives this dust crushing rotor is higher than the reference hydraulic pressure,
A position correction value from a reference position preset by an external setting device is obtained from the detected hydraulic pressure value of the hydraulic oil.The support base is separated from the dust crushing rotor based on this position correction value, and dust is removed. The hydraulic pressure of the working oil becomes the reference hydraulic pressure because it easily passes between the rotary blade of the dust crushing rotor and the fixed blade of the support table and the resistance is reduced. On the other hand, when soft, low-adhesion trash is supplied to the crushing and supplying device,
Since the dust smoothly passes between the rotary blade and the fixed blade, the hydraulic oil supplied to the dust crushing rotor is at a lower pressure than the reference hydraulic pressure. A position correction value from the preset reference position is obtained by the setting device of the, the support base approaches the dust crushing rotor based on this position correction value, and the dust is fixed on the rotary blade of the dust crushing rotor and the fixed blade of the support base. Since it becomes difficult to pass between and, the resistance increases, so the hydraulic pressure of the hydraulic oil becomes the reference hydraulic pressure.

According to the operation control method of the refuse crushing and supplying apparatus of the second aspect of the present invention, in addition to the operation of the operation control method of the refuse crushing and supplying apparatus of the first aspect, the support base crushes the refuse from the reference position. When separated from the rotor by the position correction value, the dust crushing rotor rotates at a speed lower than the reference rotation speed by the rotation speed correction value, while the support base approaches the dust crushing rotor by the position correction value from the reference position. Then, the dust crushing rotor is rotated at a speed higher than the reference rotation speed by the rotation speed correction value.

According to the operation control method of the refuse crushing and supplying apparatus of the third aspect of the present invention, in addition to the operation of the operation control method of the refuse crushing and supplying apparatus of the second aspect, the rotation speed correction value of the refuse crushing rotor is obtained. Is further corrected by the process data obtained from a waste treatment facility including a waste incinerator and an exhaust gas treatment device.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for controlling the operation of a dust crushing and feeding apparatus according to an embodiment of the present invention will be described below with reference to FIG. 1 which is a block diagram showing an operation control system and the operation oil supplied to a hydraulic motor for driving a dust crushing rotor. The description will be made with reference to FIG. 2 which is a diagram showing the relationship between the hydraulic pressure detection value and the support base position correction value, and FIG. 3 which is a diagram showing the relationship between the support base position and the rotation speed correction value of the dust crushing rotor.

As shown in FIG. 1, the outline of the dust crushing and feeding apparatus according to the embodiment of the present invention is mainly a dust crushing rotor 1 which is rotated by a hydraulic motor (not shown) and has a plurality of rotary blades 1a around its outer circumference. The fixed blade 2a has a fixed blade 2a protruding toward the dust crushing rotor 1 side, and is swung about the non-fixed blade 2a side as a swing center, and the fixed blade 2a is swung with respect to the dust crushing rotor 1 by expansion and contraction of the rod of the hydraulic cylinder 3. It is composed of a support base 2 whose sides come close to and separate from each other.

That is, the dust is thrown in from a dust throwing hopper (not shown) provided on the upper side of the dust crushing rotor 1 and the support base 2, and the thrown dust is crushed between the rotary blade 1a and the fixed blade 2a and crushed. The generated waste is supplied to a waste incinerator (not shown) through a lower discharge chute (not shown).

Further, in the case of the hydraulic cylinder 3,
A support base position detection sensor 4 that detects the position of the support base 2 is provided, and a pressure sensor is attached to a pipe through which hydraulic oil of a hydraulic motor (not shown) that drives the dust crushing rotor 1 flows. It should be noted that the position of the support base 2 may be obtained by the amount of expansion and contraction of the rod of the hydraulic cylinder 3 and the inclination angle of the hydraulic cylinder 3, and the mounting position of the pressure sensor is a hydraulic pump that supplies hydraulic oil to the hydraulic motor. That is, the discharge side of the hydraulic oil of is good.

On the other hand, a reference position setting device 5 for manually setting the reference position of the support base 2 is provided. The electric signal generated by the reference position setting device 5 is input to the support base position controller 6, and the output signal from the support base position controller 6 is converted into a signal for controlling the support base position. Control the electromagnetic pilot type servo valve 8 which is input to the proportional setting device 7 and which is provided in the pipeline for supplying the hydraulic oil to the hydraulic cylinder 3 for operating the support base 2 by the output signal from the proportional setting device 7. Is configured to. In addition, the hydraulic pressure detection value of the hydraulic oil from the pressure sensor and the position correction value signal from a position correction value calculator 9 for obtaining the position correction value of the support base 2 are input to the support base position controller 6. It is configured to be.

Further, a manual dust amount setting device 10 for setting a dust amount, which is the amount of dust supplied to the refuse incinerator per unit time when the waste crushing and feeding apparatus is operated, is provided. This is for setting the reference rotation speed of the dust crushing rotor 1, and can be changed to the setting of the dust supply amount by setting the reference rotation speed.

The electric signal generated by the dust amount setting device 10 is used as a proportional setting device 1 for controlling the rotation of the dust crushing rotor.
1 and an electromagnetic proportional valve 1 which is provided in a pipeline for supplying hydraulic oil to a hydraulic motor that drives a dust crushing rotor 1.
2 is configured to control. Further, the proportional setter 11 obtains a rotation speed correction value of the dust crushing rotor 1 based on an input signal from the support base position detection sensor 4, and a rotation speed correction value from a rotation speed correction value calculator 13 described later. The signal is configured to be added to the electric signal generated by the dust amount setting device 10 and input.

In the position correction value calculator 9, the vertical axis represents the hydraulic pressure detection value of the hydraulic oil supplied to the hydraulic motor for rotating the dust crushing rotor 1, and the horizontal axis represents the position of the support base 2. A function as shown in is input in advance. This function is based on the assumption that the reference oil pressure of the hydraulic oil supplied to the hydraulic motor is P ₀ , but if the oil pressure detection value is (P ₀ ± Δp), the position of the support base 2 is the reference position x _0. When the hydraulic pressure detection value detected by the pressure sensor becomes (P ₀ + Δp) or more, the support base 2 separates from the dust crushing rotor 1 based on the linear function f ₁ (x), while the hydraulic pressure detection value is (P ₀ -Δ
In the case of p) or less, the support base 2 approaches the dust crushing rotor 1 based on the linear function f ₁ (x).

Therefore, a signal based on the linear function f ₁ (x) is input from the position correction value calculator 9 to the support base position controller 6, and the hydraulic cylinder is operated via the proportional setting device 7 and the electromagnetic pilot type servo valve 8. Since the rod 3 is expanded and contracted, when the hydraulic pressure detection value of the hydraulic oil supplied to the hydraulic motor is higher than the reference hydraulic pressure, the support base 2 separates from the dust crushing rotor 1, and the hydraulic pressure detection value becomes the reference hydraulic pressure. In comparison, when the pressure is low, the support base 2 approaches the dust crushing rotor 1.

The rotation speed correction value calculator 13 includes a support base 2 based on the hydraulic oil pressure detection value with the rotation speed correction value as the vertical axis.
Of the linear function f as shown in FIG.
₂ (x) is entered in advance. Therefore, the signal based on the linear function f ₂ (x) is added to the electric signal generated by the dust amount setting device 10 and input from the rotation speed correction value calculator 13 to the proportional setting device 11, and the electromagnetic proportional valve The amount of hydraulic oil supplied to the hydraulic motor via 12 is controlled.

That is, when the support base 2 is at the reference position x ₀ , the dust crushing rotor 1 is rotated at the reference rotational speed N ₀ , but when the support base 2 separates from the dust crushing rotor 1, the dust crushing rotor 1 is rotated. The rotation speed becomes (N ₀ −Δn) and the rotation speed becomes low. Conversely, when the support base 2 approaches the dust crushing rotor 1, the rotation speed of the dust crushing rotor 1 becomes (N ₀ + Δn) and the rotation speed becomes high. It is a thing.

The linear functions f ₁ (x), f
₂ (x) is determined empirically or according to the local situation in which waste is discharged, and is not particularly fixed, and does not necessarily have to be a linear function.
Further, the width of the hydraulic pressure with respect to the reference position of the support base 2 (P ₀ ±
Since p) should also be set appropriately, there is no limitation on the gradient or order of the function.

The operation control method by the operation control device of the dust crushing and supplying device will be described below. First, when operating the dust crushing and supplying apparatus, first, the support base position setting device 5 is manually operated to set the reference position x ₀ of the support base 2. In parallel with setting the reference position x ₀ of the support base 2, the dust amount setting device 10 is manually operated to set the reference rotation speed N of the dust crushing rotor 1.
Set to ₀ . Such reference position x ₀ and reference rotational speed N
_When the setting of ₀ is completed, the operation of the dust crushing and supplying device is started as follows.

When the operation of the refuse crushing and feeding device is started,
The hydraulic pressure of the hydraulic oil supplied to the hydraulic motor that drives the dust crushing rotor is continuously detected by the pressure sensor, and the detected hydraulic pressure is input to the position correction value calculator 9.
The position correction value calculator 9 substitutes the hydraulic pressure detection value, which is continuously input as a signal, into the linear function f ₁ (x).

[0028] Then, as long as it is within the range hydraulic detected value of (P ₀ ± Δp), the hydraulic pressure detected value signal that is within the range of (P ₀ ± Δp) support table position adjusting meter 6, proportional setter 7, the electromagnetic pilot type servo valve 8 maintains the current state, and since the rod of the hydraulic cylinder 3 does not expand and contract, the support base 2 is maintained at the reference position x ₀ . On the other hand, the position signal of the support base 2 is input to the rotation speed correction value calculator 13, but since the support base 2 is maintained at the reference position x ₀ , the dust crushing rotor 1 is rotated at the reference rotation speed N _0. to continue.

On the other hand, when the hardness and the tackiness of the dust supplied to the dust crushing supply device change, the resistance changes and the hydraulic pressure of the hydraulic oil supplied to the hydraulic motor driving the dust crushing rotor 1 also changes. Then, the changed hydraulic pressure detection value is detected by the pressure sensor and input to the position correction value calculator 9, but if the hydraulic pressure detection value is outside the range of (P ₀ ± Δp), the support base position controller 6, the support base position correction value is obtained based on the linear function f ₁ (x), the signal of this position correction value is transmitted to the support base position controller 6 and the proportional setting device 7, and the electromagnetic pilot type servo valve 8 is operated. As a result, the rod of the hydraulic cylinder 3 expands and contracts, so that the support base 2 moves away from or approaches the dust crushing rotor 1 by the position correction value from the reference position x ₀ .

More specifically, as well understood from FIG. 2, when the resistance becomes large due to the hardness and the degree of adhesion of the dust and the hydraulic pressure of the hydraulic oil becomes high, the support base 2 separates from the dust crushing rotor. When the hydraulic pressure changes toward the reference oil pressure P ₀ and becomes lower, the resistance becomes smaller and the hydraulic oil pressure becomes lower, so that the support base 2 approaches the dust crushing rotor 1 and the oil pressure becomes the reference oil pressure P 0. It changes toward ₀ and becomes higher pressure.

In this way, when the support base 2 separates from or approaches the dust crushing rotor 1, the position of the support base 2 is input to the rotation speed correction value calculator 13. The rotation speed correction value calculator 13 substitutes the input position correction value signal of the support base 2 into the linear function f ₂ (x), and the dust crushing rotor 1
Calculate the rotation speed correction value of. The calculated rotation speed correction value signal is input to the proportional setting device 11, the proportional proportional setting device 11 operates the solenoid proportional valve 12, the amount of hydraulic oil supplied to the hydraulic motor changes, and the rotation speed of the hydraulic motor changes. The rotation speed becomes higher or lower than the reference rotation speed N ₀ by the rotation speed correction value.

As described above, when the support base 2 moves away from and approaches the dust crushing rotor 1 according to the quality of dust and the hydraulic pressure becomes high, the pressure becomes low toward the reference hydraulic pressure P ₀ direction, and the hydraulic pressure becomes high. When the pressure becomes low, the pressure becomes high in the direction of the reference oil pressure P ₀ , so that the rotation of the dust crushing rotor 1 due to the overload is not stopped, and the dust crushing supply device can be stably operated, that is, the dust incinerator can be stably operated. Become.

By the way, if the rotation speed of the dust crushing rotor 1 does not change and the support base 2 separates from the dust crushing rotor 1 from the reference position, a large amount of dust is supplied to the dust incinerator and conversely the dust crushing rotor. If the support base 2 approaches 1 from the reference position, less waste is supplied to the waste incinerator, so that the amount of waste supplied varies, and combustion of the waste in the waste incinerator becomes unstable. as a result,
It becomes impossible to incinerate the target amount of waste and the concentration of pollutants in the exhaust gas.

However, according to an embodiment of the present invention,
As described above, when the support base 2 is separated from the dust crushing rotor 1, the dust crushing rotor 1 is rotated at a low speed by the rotation speed correction value to suppress an increase in the amount of dust supplied to the dust incinerator, while crushing the dust. When approaching the rotor 1, the dust crushing rotor 1
Is rotated at a high speed by the rotational speed correction value to suppress the decrease in the amount of waste supplied, and maintains the amount of waste supplied to the waste incinerator constant regardless of the position of the support base 2 with respect to the waste crushing rotor 1. Acts like. Therefore, the variation in the amount of waste supplied to the waste incinerator can be reduced and the waste can be burned stably, so that it is possible to reduce the concentration of pollutants in the exhaust gas and incinerate a target amount of waste.

Next, the operation control method of the dust crushing and feeding apparatus according to another embodiment of the present invention will be described with reference to FIG. 4 which is a block diagram showing a part of the operation control system, and is different from the above embodiment. In the following, only the proportional setter 11 and the rotation speed correction value calculator 13 constituting the control system for controlling the rotation of the dust crushing rotor 1 will be described. In addition to inputting the rotational speed correction value signal, various process data obtained from the refuse incineration facility is input to correct the rotational speed correction value obtained by the rotational speed correction value calculator 13. . In this embodiment, the support base position detection sensor 4 is provided on the support base 2, and its position is determined by the inclination angle of the support base 2. Of course, similarly to the above-mentioned embodiment, the support base position detection sensor 4 may be provided in the hydraulic cylinder 3.

As is well known, the amount of heat generated by dust differs depending on its type. Therefore, if the amount of dust supplied to the refuse incinerator is controlled only by the hardness and the degree of tackiness of the dust as in the above embodiment, the concentration of pollutants cannot be further reduced. For example, when the temperature inside the furnace becomes too high, the NO _X concentration increases.

Therefore, the in-furnace temperature data measured by the temperature sensor provided in the refuse incinerator and the in-reactor oxygen concentration data measured by the oxygen concentration meters installed inside and outside the incinerator are input to the proportional setting device 11. However, the rotational speed correction value is corrected according to the level of the temperature inside the furnace and the degree of oxygen concentration inside and outside the furnace. Therefore, the number of revolutions of the dust crushing rotor 1 is controlled according to the temperature inside the furnace and the oxygen concentration inside and outside the furnace in addition to consideration of hardness and stickiness of the dust, so that the waste is discharged from the refuse incinerator. This has the effect of further reducing the concentration of pollutants in the exhaust gas.

[0038]

As described in detail above, the first aspect of the present invention
According to the operation control method of the dust crushing and feeding device according to the above, when the load of the dust crushing rotor is increased, the support base is separated from the dust crushing rotor by the position correction value from the dust crushing rotor and the hydraulic pressure of the hydraulic oil becomes low. When the load on the dust crushing rotor decreases, the support table approaches the dust crushing rotor more than the reference position by the position correction value, and the hydraulic pressure of the hydraulic oil becomes high, so it does not matter whether the load on the dust crushing rotor increases or decreases. The fluctuation of the hydraulic pressure supplied to the hydraulic motor that drives the dust crushing rotor is reduced, which has a great effect on the stable operation of the dust crushing and feeding device.

Further, according to the operation control method of the refuse crushing and supplying apparatus according to the second aspect of the present invention, in addition to the effect of the operation control method of the refuse crushing and supplying apparatus according to the first aspect, the support base is the dust crushing rotor. When the crushing rotor is separated from the waste incinerator by the position correction value, the crushing rotor is rotated at a speed lower than the reference rotation speed by the rotation speed correction value, and the increase in the waste supply amount to the waste incinerator is suppressed, while the support base When the dust crushing rotor approaches the correction value by the correction value, the dust crushing rotor is rotated at the high speed by the rotation speed correction value, and the decrease in the waste material supply amount to the waste incinerator is suppressed, and the variation in the waste material supply amount to the waste incinerator Since the amount of waste is reduced, the waste can be stably burned, and there is a great effect on the reduction of the concentration of pollutants in the exhaust gas and the incineration of a target amount of waste.

Further, according to the operation control method of the refuse crushing and feeding device of the present invention, in addition to the effect of the operation control method of the dust crushing and feeding device of claim 2, the rotation speed of the dust crushing rotor The correction value is further corrected by the process data obtained from the waste treatment equipment including the waste incinerator and the exhaust gas treatment device. Therefore, for example, the furnace temperature is maintained in proper, because an increase of the NO _X concentration due to the high temperature of the furnace temperature can be suppressed, there is a great effect on further reducing the concentration of pollutants.

[Brief description of drawings]

FIG. 1 is a block diagram showing an operation control system of a dust crushing and supplying apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a relationship between a support base position correction value and a hydraulic pressure detection value of hydraulic oil supplied to a hydraulic motor that drives a dust crushing rotor according to the embodiment of the present invention.

FIG. 3 is a diagram showing a relationship of a rotation speed correction value of a dust crushing rotor with respect to a position of a support table according to the embodiment of the present invention.

FIG. 4 is a block diagram showing a part of an operation control system of the dust crushing and supplying apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 1 ... refuse crushing rotor, 1a ... rotary blade 2 ... support base, 2a ... fixed blade 3 ... hydraulic cylinder 4 ... support base position detection sensor 5 ... reference position setter 6 ... support base position controller 7 ... proportional setter 8 ... Electromagnetic pilot type servo valve 9 ... Position correction value calculator 10 ... Dust amount setting device 11 ... Proportional setting device 12 ... Electromagnetic proportional valve 13 ... Rotation speed correction value calculator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Choi Yoshio Doi 1-3-18 Wakihamacho, Chuo-ku, Kobe, Hyogo Prefecture Kobe Steel, Ltd. Kobe Head Office

Claims (3)

[Claims] 1. A crushing rotor driven by a hydraulic motor,
The refuse is supplied to a refuse crushing and feeding device provided with a support base that approaches and separates from the crushing rotor, and the supplied dust is supplied to a rotary blade arranged around the outer periphery of the crushing rotor and the crushing rotor of the support base. In the operation control method of the dust crushing and feeding device that feeds the crushed refuse to the refuse incinerator while crushing it through the fixed blade that is planted, detects the hydraulic pressure value of the hydraulic oil supplied to the hydraulic motor. From the detected oil pressure detection value, the position correction value of the support base from the reference position with respect to the dust crushing rotor preset based on the reference oil pressure is obtained,
When the hydraulic pressure detection value is higher than the reference hydraulic pressure, the support base is separated from the dust crushing rotor based on the position correction value, while when the hydraulic pressure detection value is lower than the reference hydraulic pressure, the support base is moved based on the position correction value. A method for controlling the operation of a dust crushing and feeding device, which is characterized in that a dust crushing rotor is brought close to the rotor. 2. A rotation speed correction value with respect to a reference rotation speed of the dust crushing rotor preset by an external setting device is obtained from the position correction value of the support base, and the support base is moved from the reference position based on the position correction value. When the dust crushing rotor is separated from the dust crushing rotor, the dust crushing rotor is rotated at a low speed based on the rotation speed correction value, and when the support base is closer to the dust crushing rotor than the reference position based on the position correction value. The operation control method of the dust crushing and supplying apparatus according to claim 1, wherein the dust crushing rotor is rotated at a high speed based on the rotation speed correction value. 3. The rotation speed correction value of the dust crushing rotor,
The waste crushing supply according to claim 2, wherein the waste crushing supply is corrected by process data obtained from a waste incinerator that incinerates the waste crushed by the waste crushing supply device and an exhaust gas treatment device that processes combustion exhaust gas. Operation control method for equipment.