JPH0322452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of operating a bedding system in a sintering apparatus.

[Conventional technology]

FIG. 3 is a diagram showing the configuration of a bedding system of a conventional sintering facility, and FIG. 4 is a relay circuit diagram for operating this bedding system. In the figure, 1 is the charging hopper for the main raw material, 2 is the sintering machine, 3 is the cooler, 4 is the crusher, 5 is the screen, and 6 is the reversible product that feeds finished products when rotating in the normal direction and feeds the bed when rotating in the reverse direction. Conveyor, 7 and 8 are bedding conveyors, 9 is bedding hopper, 10 is a sensor for detecting HIGH level of bedding hopper, 11 is also a sensor for detecting LOW,
12 is a contact that turns on when the hopper level is LOW, 1
3 is a contact that turns off when the hopper level is HIGH, 1
4 is a self-holding contact of relay X, 15 is a coil of relay X that is excited at hopper level LOW, 16 and 21 are a contacts of relay Relay 19 is the b contact of relay
auxiliary contacts, 25 and 26 are respectively relay 2
0,22 auxiliary contacts.

In the bedding system configured as described above, the main raw material cut out from the charging hopper 1 is sintered by the sintering machine 2, cooled by the cooler 3, and crushed by the crusher 4. will lead you to screen 5. Next, the reversible conveyor 6 normally rotates in the forward direction to drive the finished product, but when the bedding hopper 9 reaches the LOW level 11, the bedding conveyors 7 and 8 start operating, and at the same time, the reversible The conveyor 6 performs reverse operation to guide the raw material to the bedding hopper 9. When the level of the bedding hopper 9 reaches HIGH level 10, the bedding conveyors 7 and 8 stop, and the reversible conveyor 6 rotates in the normal direction to resume product feeding operation.

The relay circuit shown in FIG. 4 starts and stops the bedding feeding conveyors 7 and 8 and rotates the reversible conveyor 5 forward and reverse depending on the HIGH and LOW levels of the bedding hopper 9. 9 level is
When it becomes LOW, the contact 12 is turned ON and excitation current flows through the coil 15, and the relay X is self-held by the self-holding contact 14. At the same time, the a contact 16 of relay
7, 18 are activated, and these auxiliary contacts 23, 24
turns ON and starts the bedding conveyors 7 and 8. Further, when the other a contact 21 is turned on, a relay 23 is activated, and its auxiliary contact 26 is turned on, causing the reversible conveyor 6 to rotate in the reverse direction.

[Problem that the invention seeks to solve]

In the conventional bedding system operation method as described above,
Regardless of the supply amount of bedding raw materials, the bedding feeding conveyors 7 and 8 are adjusted depending on the amount of raw materials in the bedding hopper 9.
As the reversible conveyor 6 is frequently started and stopped, and the reversible conveyor 6 is switched between forward and reverse directions, the impact of the motor driving these devices on the mechanical system shortens the life of the device, and the raw material of the bedding hopper 9 is There were problems such as the need to provide a complicated control circuit that operates based on the level signal.

This invention was made to solve the above-mentioned problems.
The purpose is to obtain the operating direction of a bedding system without stopping or forward/reverse switching operations.

[Means for solving problems]

The operating method of the bedding system in the sintering apparatus according to the present invention is such that the bedding system is operated according to the speed of the sintering machine at the exit of the hopper from which the product falls from the sintering machine through the cooler, crusher, and screen. A damper is provided, and the opening degree of the bedding feed is adjusted by the damper, so that the amount of raw material in the bedding hopper is always kept constant.

[Effect]

In the hopper provided directly below the screen in this invention, a damper provided at the bottom of the hopper adjusts the feed opening degree of the raw material bedding based on an analog signal based on the speed of the sintering machine. Therefore, the raw material level in the bedding hopper is always kept constant while continuously feeding the finished product falling into the bedding hopper to the bedding system.

[Embodiments of the invention]

FIG. 1 is a diagram showing the configuration of a bedding system in a sintering apparatus according to an embodiment of the present invention and a control circuit for operating the apparatus based on this configuration;
Reference numerals 1 to 5 and 7 to 9 are the same or corresponding parts to the parts with the same symbols in FIG. 3 showing the conventional example. 27 is a hopper for storing the products falling from the screen 5, and 28 is provided at the bottom of this hopper 27, and by rotation of a motor, left and right outlets 27a, 2 are opened.
7b, a damper that opens and closes 7b; 29, a tachometer generator that detects the speed of the sintering machine 2 and converts this detected speed into a current signal of, for example, 4 to 20 mA; 30, the output signal of this tachometer generator 29; and 31, based on the output signal 30. An opening control circuit 32 and 33 are relays that open and close according to the output of the opening control circuit 31, and 34 and 35 are contacts of the relays 32 and 33, respectively.

In the bedding system apparatus according to the present invention having the above-mentioned structure, the main raw material is supplied from the charging hopper 1 to the sintering machine 2 and passes through the cooler 3 to the crusher 4, which is the same as the operation of the conventional example. In the hopper 27 that falls from the crusher 4 and receives the finished product through the screen 5, for example, if the speed of the sintering machine 2 increases and more bedding material is required to be stored in the bedding hopper 9. , in accordance with an increase in the detected speed value of the tachometer generator 29 that detects the speed of the sintering machine 2, the output signal 30 value of this increases and operates the opening control circuit 31, for example, the relay 32
When the contact 34 is turned ON by energizing the damper 28, the damper 28 is rotated counterclockwise by the drive of the motor, and the opening degree of the right outlet 27b of the hopper 27 is increased.
The amount of raw material fed to the bedding hopper 9 via the bedding conveyors 7 and 8 increases.

In addition, when the speed of the sintering machine 2 decreases, contrary to the above, the output signal 30 value of the tachometer generator 29 decreases, energizing the relay 33, the contact 35 becomes ON, and the damper 28 rotates clockwise. Therefore, the opening degree of the left outlet 27a of the hopper 27 increases, the product feeding side increases, and the feeding of the bedding raw material to the bedding hopper 9 decreases, and the speed of the sintering machine 2 increases. By rotating the damper 28 in accordance with the increase or decrease, the bedding material stored in the bedding hopper 9 is always maintained at a constant level.

Figure 2 shows the speed of the sintering machine 2 in the above operation,
That is, it is a diagram showing an example of the relationship between the output signal 30 value of the tachometer generator 29 and the counterclockwise opening degree of the damper 28, that is, the bedding feeding opening degree.

In the above embodiment, the case where there is one sintering machine 2 has been explained, but the products fed from a plurality of sintering machines 2 are accommodated in one hopper (not shown), and the products are stored in one hopper (not shown). Even if the damper 28 provided at the bottom is operated, the same effects as in the above embodiment can be obtained.

〔Effect of the invention〕

As explained above, this invention stores the product fed from the sintering machine in a hopper, operates the damper provided at the bottom of the hopper, and feeds the bedding material according to the speed of the sintering machine. Since it is configured to adjust the feeding amount, there is no need to start, stop, or switch between forward and reverse operation of conveyors during operation, and there is no risk of mechanical shock to the equipment, allowing simple and inexpensive control means to be used. This has the effect of enabling stable operation of the bedding system.

[Brief explanation of drawings]

Figures 1a and b are block diagrams showing the bedding system of a sintering apparatus according to an embodiment of the present invention, and Figure 2 is a line showing the relationship between the speed of the sintering machine and the opening degree of the damper in Figure 1. 3 is a configuration diagram showing an example of the configuration of a conventional bedding system, and FIG. 4 is a relay circuit diagram for operating the device having the configuration shown in FIG. 3. In the figure, 1 is a charging hopper, 2 is a sintering machine,
7 and 8 are bedding conveyors, 9 is bedding hopper,
27 is a hopper, 28 is a damper. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. In an apparatus for supplying raw materials onto a sintering machine from a charging hopper and a bedding hopper, and storing a part of the product fed through the sintering machine into the bedding hopper via a conveyor, the above-mentioned A hopper for accommodating the product sent through the sintering machine, and a damper at the outlet of the hopper that operates according to the speed of the sintering machine, and when the speed of the sintering machine increases, the floor of the damper A method of operating a bedding system in a sintering apparatus, characterized in that the level of the bedding material fed through the conveyor and stored in the bedding hopper is kept constant by increasing the bedding feeding opening degree. .