JPS6061049A - Automatic control of waste crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic control method for a waste crushing device.

A supply conveyor that cuts the raw material from the raw material hopper, a feeder that compresses and supplies the cut raw material to the crusher, a crusher that crushes the raw material by impact and shear action, and a sorting device that separates the crushed material. BACKGROUND OF THE INVENTION Series of waste crushing and processing equipment consisting of storage hoppers for temporarily storing materials are known in the art.

Conventionally, such devices have been operated by at least one remote control operator in a central control room. The operator should know the crushing load using the ammeter of the drive motor for the crusher, and also monitor the video feed from the TV camera installed in the raw material hopper, feeder, conveyor, storage hopper, etc. The supply amount is controlled by this.

The type and shape of the waste to be shredded by the above equipment,
They come in a variety of sizes and properties, such as tires, refrigerators, and washing machines that have extremely high crushing resistance, and tatami mats, pine tresses, and polystyrene foam materials that have low crushing resistance but can abnormally increase in volume when crushed. included. As a result, the processing status within the apparatus changes significantly from time to time, and the burden on the operator is increased if the apparatus is to be operated properly and efficiently. Furthermore, since there are individual differences in the operating skills of operators, it is difficult to always operate stably under optimal conditions.

Therefore, it is required to automate the control part of waste treatment equipment.

The object of the present invention is to provide a method for controlling a crusher and its peripheral equipment, which are important parts in such automation.

In order to achieve the above object, the present invention provides a crusher with a power consumption detector for the drive motor and a level meter for detecting the layer thickness of the crushed material in the discharge section, and these detectors and level meter The signal is input to the control device, and when both detection signals are within the normal level range, the speed of the supply section is controlled to be kept constant, and when both detection signals are below the normal level, the speed of the supply section is increased. In addition, when one or both of the detection signals reaches an abnormal level, the supply section is controlled to be slowed down or stopped.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a waste crushing device, in which a feed conveyor 2 is provided below a raw material hopper 1 in the direction of flow of crushed materials. The tip of the supply conveyor 2 is connected to the supply section 3
The upper part of the opening provided in the casing 4 is facing upward. A feeder 5 is provided inside the casing 4, and a feeder 5 is provided within the casing 4, and a feeder 5
The waste supplied from the crusher 6 is crushed by a feeder 5 to a constant thickness and is then supplied to a crusher 6.

A vertical or horizontal rotor 7 having a hammer is provided inside the crusher 6, and a casing 9 of a discharge section 8 is communicated with the lower part of the crusher 6. A discharge conveyor 10 is provided.

The distal end of the above discharge conveyor 10 faces onto the transport conveyor 11. A magnetic separator 12 is provided above the tip of the conveyor 11, a sieve 13 is provided below the magnetic separator 12, and a plurality of storage hoppers 14 are provided below the magnetic separator 12 and the sieve 13. ing.

The above supply conveyor 2. Feeder 5. The crusher 6 and the discharge conveyor 10 are electric +i15, 16.17.1, respectively.
Although not shown, the conveyor 11 and the magnetic separator 12 are also driven by required electric motors.

In addition, ultrasonic level meters 19.20 and 21.22 are provided on the raw material hopper 1, the upper part of the opening of the supply part 3, the discharge part 8, and the upper part of the storage hopper 14, respectively. A power consumption detector 23 is attached to the.

Above power consumption detector 23, each level meter 19°20.2
1.22 is electrically connected to the central control device 241 so as to send a detection signal thereto, and each electric motor 15, 16, 17.18 is controlled by a signal from the control device 24. It is electrically connected to the same device 24 so that the

The above control device 24 includes each level meter 19, 20.21.
．． Based on the detection signals from 22 and the power consumption detector 23,
It starts and stops the electric motors 15, 16, 17, and 18, and controls their speed.

An example of control in this case is as follows.

(2) Start and stop operation When the level meter 19 of the raw material hopper 1 exceeds the lower limit level and a required operation command is issued, a start signal for the entire apparatus is issued from the controller 24, and operation is started. When the level meter 19 falls below the lower limit level, or when all level meters 22 of the storage hole 14 exceed the upper limit level, a stop command is issued to the entire device.

(2) Control of the supply conveyor When the level meter 20 detects that the amount of crushed raw material accumulated in the supply section 3 is below the lower limit level, the control device 24
issues a speed increase command to the electric motor 15 of the supply conveyor 2. Further, when the accumulated amount is within the normal range, the supply conveyor 2 is driven at a constant speed.

Further, when the upper limit level is exceeded, the supply conveyor 2 is stopped.

■1. Control of the feeder, crusher, and discharge conveyor (see Figure 2) When the device is started, the power consumption detector 23 of the crusher 6
If the detection signal from the level meter 21 of the discharge conveyor 1o indicates that it is below the lower limit level LV, and the detection signal from the level meter 21 of the discharge conveyor 1o also indicates that it is below the lower limit level LV, the feeder 5 is accelerated. As a result, the speed increase of the feeder 5 continues while the discharge conveyor 1o is below the upper limit level HVII and while the crusher 6 does not reach the rated level NV.

When the discharge conveyor 10 exceeds the abnormal level AV due to the speed increase of the feeder 5, the feeder 5 is stopped.

When the engine reaches LVi, the speed is increased again.

On the other hand, if the crusher 6 exceeds the rated level NV and does not exceed the second limit level HV, the current speed of the feeder 5 is maintained. If the upper limit level riv is exceeded but the overload level AV is not exceeded, the feeder 5 is decelerated. In history,
If the overload level AV is exceeded and the heavy load level BV is not exceeded, the feeder 5 is stopped. Also, heavy load level B
If it exceeds V, the crusher 6 and supply conveyor 2 are stopped, and after a certain period of time has elapsed by a timer, all of the discharge conveyors 10I2i are stopped.Heavy load level B
The value exceeding V occurs when an abnormal situation occurs such as crushed material getting caught in the crusher 6, so after this abnormal situation is resolved, control is resumed from the initial state.

In addition, in the above-mentioned embodiment, the feeder 5 is provided in the supply section 3.
However, without using this feeder 5, the tip of the supply conveyor 2 may be made to face the crusher 6, and the raw material may be directly supplied from the supply conveyor 2. In this case, the supply conveyor 2 is controlled once in the same manner as the feeder 5 described above by each detection signal from the detector 23 of the crusher 6 and the level meter 21 of the discharge section 8.

As described above, the present invention controls the speed of the supply section based on the detection signal from the power consumption detector of the electric motor for driving the crusher and the level meter for detecting the layer thickness of crushed material in the discharge section. Therefore, if the load on the crushed 111Al increases, or if the load on the crusher is light but the layer thickness at the discharge section increases abnormally, it will be automatically supplied according to the load and layer thickness. Can you control the department?

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the apparatus, and FIG. 2 is a flowchart of the embodiment. 1... Raw material hopper, 2... Supply conveyor, 3...
Supply section, 5... feeder, 6... crusher, 8...
Discharge section, 10...Discharge conveyor, 14...Storage hopper, 15,16.17.18...Electric motor, 19,20
, 21.22...Level meter, 23...Power consumption detector, 24...Control device patent applicant Kurimoto Tetsutamasho Co., Ltd. Agent Kama 1) Written amendment to the second procedure (Target) Showa b8 (+December 21, Kazuo Wakasugi, Director General of the Licensing Agency, 1, Indication of the case, 1982 Patent Application No. 170466, 2, Name of the invention, Automatic control method for waste fruit crushing device 3, Person making the amendment, and Relationship Patent applicant address: 1-12-19-Kitahorie, Nishi-ku, Osaka Kurimoto Iron Works Co., Ltd. 5゜Showa Year, month, day (shipment date) 6. Number of inventions increased by amendment 7. Target f+Ii iE content 1, page 6 line 12-13 of the specification “all levels cleared 2
2" to "Level total 22" 02, page 8, line 5, "Crusher 6," σ) Next, do "Feeder b and" 1Jt1 person.

Claims (1)

[Claims] An automatic control method for a waste shredding device, which includes a shredded raw material supply section in the front stage of the shredder, a shredded material discharge part in the rear stage of the shredder, and a control device for each of the drive parts of the shredder, the supply part, and the discharge part. The crusher is equipped with a power consumption detector for the drive motor, and the 4u+ outlet is equipped with a level meter for detecting the layer thickness of the crushed material, and the detection signals from these detectors and the level meter are input to the control device, and both When the detection signal of is within the normal level range, the speed of the supply section is controlled to be kept constant, and when both of the detection signals are below the normal level, the speed of the supply section is controlled to be increased, and either one or An automatic control method for a waste shredding device, characterized in that the supply section is controlled to be slowed down or stopped when both detection signals reach an abnormal level.