KR19990013127A - Automatic metal detection and removal device for belt conveyor for raw material transport - Google Patents

Abstract

The present invention relates to an automatic metal detection and removal device for a belt conveyor for raw material transportation, and more particularly to a metal automatic detection and removal device for a belt conveyor for raw material transportation. The present invention relates to a technology installed in the upper part of the metal detector of the conveyor to safely and quickly detect the presence or absence of metal and automatically remove it.

Description

Automatic metal detection and removal device for belt conveyor for raw material transport

The present invention relates to a metal automatic detection and removal device of the belt conveyor for raw material transport, and in particular, the metal automatic detection and removal device of the belt conveyor in the furnace is installed on top of the metal detector of the belt conveyor to detect the presence or absence of metal safely and quickly. It is about a technology that can be removed automatically.

1 is a state diagram showing a metal detection and removal device of the conventional belt conveyor.

Typically, in the furnace, iron ore and coke (1d) to be introduced into the furnace to produce the molten iron are screened at screens 8 below the eight bins and 7c, respectively, and have a predetermined size or more. A basis weight is fed in a basis weight hopper 8a to a lump coal transport belt conveyor 1.

In addition, as a facility which is continuously operated during normal operation, the chute is blocked or the belt conveyor 1 is damaged by the pieces of metal 1c introduced when the iron ore 1c and the coke 1d are introduced into the reservoir 7c. The metal detector 4 is fixedly used in the belt width direction in three lump coal transport belt conveyors 1 for transporting iron ore and coke 1d to a relay storage tank of a blast furnace in order to prevent giving.

At this time, the metal detector 4 stopped the belt conveyor 1 and alerted the driver so that the metal body 1c could be removed.

In addition, during the metal removal work, the driver was informed that the metal was detected at a long distance, and received the roller support base of the belt conveyor which was stopped.

However, the conventional method as described above has the following problems.

First, iron ore and coke must be transported continuously during normal operation, and because it moves at a long distance, time is delayed and falls below the appropriate level of the ore in the furnace, which causes enormous obstacles to the yellowing.

Second, there is a risk of falling when the operator climbs up and down the belt, and there is a risk of the belt narrowing due to the movable snap.

Third, there is a problem in the normal operation due to the occurrence of equipment accidents such as chute clogging and belt conveyor damage when the check is neglected due to malfunction of the metal detector.

Fourth, all of the above operations are performed by manual work, which leads to an increase in workload.

Accordingly, the present invention is to solve the above problems, the fuel automatic metal detection and removal device of the belt conveyor is installed on the metal detector of the belt conveyor to detect the presence or absence of metal safely and quickly for fuel transport It is an object of the present invention to provide an automatic metal detection and removal device for a belt conveyor.

1 is a state diagram showing a metal detection and removal device of the conventional belt conveyor

Figure 2 is a detailed view showing a metal automatic detection and removal device of the belt conveyor according to the present invention

3 is an exploded view showing the metal removal apparatus shown in FIG.

Figure 4 is a flow chart showing the operation of the automatic metal detection and removal of the belt conveyor according to the present invention

Explanation of symbols on the main parts of the drawings

1: belt conveyor 1a: pulley

1c: metal body 1d: fuel coal (coke)

2: Pulley Encoder 2a: Control Unit

3: metal recovery box 3a: load cell

3b: first rail fixing base 3c: rail

4: metal detector 4a: proximity sense

4b: 2nd rail fixed base 5: limit switch

6: motor 6a: motor encoder

7a: Electromagnet 7b, 7c: Electron valve

7c: reservoir 8: screen

8a: basis weight hopper 8b: cylinder

8c: roller

According to the automatic metal detection and removal device of the belt conveyor for raw material transport of the present invention

An automatic metal detection and removal apparatus installed in a belt conveyor for transporting raw material lump coal of a blast furnace;

Before the metal detector, the first and second rail fixing bases are installed at a rear side at a predetermined distance, and the first and second rail fixing bases are fitted with rails around the metal detectors. A metal recovery box equipped with a load cell is installed in the lower part of the vertical part, and a rail mounted on the upper part of the first rail fixing base is mounted horizontally with a roller and a motor that transmits power to the roller to allow forward and backward movement. An encoder capable of controlling the motor speed is connected to the shaft, and a connecting ring and an electromagnet are connected to the cylinder rod end of the lower roller base installed on the second rail fixing base, and a belt conveyor pulley encoder is connected to the pulley shaft. An electromagnetic valve for operating the cylinder rod up and down and the belt conveyor for transmitting a signal to the electronic valve. In that it comprises a control unit which is located near the side of the side features.

Figure 2 is a detailed view showing a metal automatic detection and removal device of the belt conveyor according to the present invention.

Before and after the metal detector 4 of the belt conveyor 1, the second rail fixing base 4b for supporting the rails 3c is vertically fixed, and the rails 3c are fixed to the first and second rails at the top. The bases 3b and 4b are assembled by bolt nuts.

In addition, the metal recovery box 3 is installed below the first rail fixing base 3b, and the load cell 3a is combined with the metal recovery box 3 below so that the metal detection box can be detected by detecting the weight. do.

Subsequently, an encoder 2 is connected to the shaft of the head pulley 1a of the belt conveyor 1, and a limit switch 5 is installed at the end of the rail 3c above the metal recovery box 3.

FIG. 3 is an exploded view showing the metal removing apparatus shown in FIG. 2.

The motor encoder 6c connected to the shaft of the motor 6, which transmits power to the lull 8c, is combined, and the cylinder 8b is fixedly installed at the base of the motor 6, and the bolt nut is provided at the lower part of the cylinder 8b. Fastened connecting ring (6c) is connected and the electromagnet (7a) is attached to the bottom.

4 is a flowchart showing the operation flow of the automatic metal detection and removal of the belt conveyor according to the present invention.

First, when the metal detector 4 of the belt conveyor 1 in operation is operated, the metal detection and removal device sequence is started by an electric signal of the control unit 2a transmitted from the encoder 2 of the head pulley 1a. do.

Next, when the motor 6 moves forward to the stored distance by receiving the signal from the control unit 2a and starting the proximity sensor 4a, the motor 6 stops after reaching the home position.

Then, electricity is supplied to the electromagnet 7a to form the electromagnet 7a, and the cylinder 9b is lowered by the operation of the forward electromagnet 7b, and the electromagnet 7a connected to the lower portion of the cylinder 8b. Continues to descend until the proximity sensor 4a is detected, and the lowering operation of the cylinder 8b is stopped when the proximity sensor 4a is detected.

Next, the cylinder 8b is raised by the excitation of the reverse electromagnetic valve 7c after a predetermined time, the motor 6 reverses, and the lula 8c is rolled in the reverse direction, and when the limit switch 5 is operated, the motor ( 6) is stopped.

Then, since the electricity is cut off to the electromagnet (7a), the metal pieces attached to the electromagnet (7a) fall to the lower metal recovery box (3).

Next, when the motor 6 moves in low motion and the proximity sensor 4a detects, the motor 6 is stopped and the metal detector 4 is automatically reset and the metal collecting box 3 The weight detected by the load cell 3a is displayed in the cab and the sequence is returned to the state before the start.

Metal automatic detection and removal of the belt conveyor for raw material transport according to the present invention

First, since the conventional metal detector needs to be moved at a long distance, it is possible to prevent the operator's load work from falling down in the furnace level due to a delay in action time.

Second, because there is no need to climb on the belt for metal removal, the risk of falling and the narrowing of the belt can be prevented.

Third, it is possible to prevent equipment accidents such as chute clogging or belt conveyor damage due to the lack of confirmation during operation of the metal detector.

Fourth, the metal detection and removal can be performed by a series of sequences to simplify the work as well as reduce the load and effective personnel management, and to prevent foreseeable safety accidents during metal removal. There is a practical effect to prevent various operational obstacles in the operation of the facility.

Claims (1)

In the automatic metal detection and removal device installed on the belt conveyor for transporting the raw material system lump coal of the furnace, Before the metal detector, the first and second rail fixing bases are installed at a rear side at a predetermined distance, and the first and second rail fixing bases are fitted with rails around the metal detectors. A metal recovery box equipped with a load cell is installed in the lower part of the vertical part, and a rail mounted on the upper part of the first rail fixing base is mounted horizontally with a roller and a motor that transmits power to the roller to allow forward and backward movement. An encoder capable of controlling the motor speed is connected to the shaft, and a connecting ring and an electromagnet are connected to the cylinder rod end of the lower roller base installed on the second rail fixing base, and a pulley encoder is connected to the pulley shaft on the belt conveyor pulley. And a belt for transmitting a signal to the electromagnetic side and the electromagnetic side for operating the cylinder rod up and down. Fuel transport belt metal automatic detection and removal of the conveyor apparatus comprising: a control unit which is located near the outer side surface Bayer.