KR200223753Y1 - Vibration Sensitivity Device Of Vibrator Feeder - Google Patents

Abstract

The present invention relates to a vibration sensing device of the vibrating feeder to detect the vibration of the vibrating feeder installed in the lower hopper,

A detection rod is installed in the spring and the center of the spring to measure the displacement of the spring during the vibration of the vibrating feeder, and the displacement signal measured by the detection rod is applied to the vibration sensing control means through a lead wire connected to the spring and the fixing part. . Subsequently, the displacement signal according to the contact between the spring and the detection rod is determined by the vibration detection control means to output a vibration detection signal according to whether the vibrating feeder is vibrated to the external display means through the cable jack.

Therefore, by accurately detecting the actual vibration of the vibrating feeder, it is possible to know whether the vibrating feeder is in normal operation, so that the vibration of the vibrating feeder can be detected quickly when there is no normal vibration of the vibrating feeder due to coil breakage or mechanical failure of the vibrating magnet. Can be.

Description

Vibration Sensing Device of Vibrating Feeder Installed in the Bottom of Hopper

The present invention relates to a device for detecting the operating (vibration) state of the equipment operated by vibration, specifically, the vibrating to be mounted on the vibrating feeder installed in the lower hopper to monitor the operating state of the vibrating feeder It relates to a vibration sensing device of the feeder.

More specifically, by accurately detecting the actual vibration of the vibrating feeder, it is possible to know whether the vibrating feeder is in normal operation. Therefore, if the vibrating feeder is not vibrated normally due to coil breakage or mechanical defect of the vibrating magnet, It relates to a vibration sensing device of the vibrating feeder to sense.

Referring to Figure 1 briefly look at the limestone manufacturing process of the shaft kiln 10.

Lime firing process is to store the washed limestone in the raw stone hopper (30a) and then cut through the vibrating feeder 20 installed below the hopper (30a) by the operation process to select the appropriate particle size in the screen 40 belt It is stored by the conveyor 50 in the charging hopper 30 at the top of the kiln. The limestone stored in the charging hopper 30 is discharged to the vibrating feeder 20 under the charging hopper and charged into the shaft kiln 10. Limestone loaded in the shaft kiln 10 produces lime by heating limestone with COG gas 10a and air 10b as a heat source.

2 illustrates a control configuration of a conventional vibrating feeder 20. Referring to FIGS. 1 and 2, a control method of a conventional vibrating feeder will be described below.

If the driver gives the vibrating feeder a start signal by the start / stop unit 70 with the power supply 440 volts applied, the start signal is transmitted by the control panel of the field vibrating feeder 20 by the sequence of the DCS 60. The discharge amount setting signal transmitted to 20a) and applied from the setting unit 80 controls an AC voltage by changing a pulse applied to the gate of the thyristor 20b through the amplifier 20c by the control output through the PI calculator. .

Subsequently, the controlled AC voltage is applied to the coil for vibrating magnet 20d, the magnet 20d vibrates by magnetic force, and vibration is transmitted to the vibrating feeder 20 connected with the magnet to cut out the gemstone.

In other words, in general, when the driver sets the operating signal and the discharging amount of the vibrating feeder in the DCS 60, the operating signal and the set value are transmitted from the DCS 60 to the control panel panel 20a of the field vibrating feeder 20. By control, power is applied to the vibrating magnet 20d to start vibration.

On the other hand, when the cab sends a start signal to the vibrating feeder by the start / stop unit 70, the vibrating feeder operating state is indicated to the cab monitor 90 by an electrical contact signal. The control method of has the following problems.

First, since the monitor 90 indicating whether the cab vibrating feeder 20 is operating in the cab is displayed by using the operation signal of the DCS 60, the monitor 90 of the DCS 60 is actually irrespective of the vibration of the feeder in the field. When only the enable signal is applied, it is determined that the vibrating feeder vibrates normally, and the vibrating feeder 20 is displayed on the monitor 90 of the cab. Therefore, if only the start signal is applied to the DCS 60, the start signal is displayed on the monitor 90 irrespective of whether or not the field vibrating feeder 20 is vibrated. Therefore, coil breakage or mechanical defect of the vibrating magnet 20d is performed. When there is no normal vibration of the vibrating feeder 20 due to the lack of a method for monitoring the problem that the charging delay due to poor delivery has emerged.

Therefore, the present invention has been devised to solve the problems of the prior art as described above, by accurately detecting the actual vibration of the vibrating feeder to determine whether the vibrating feeder is operating normally, so as to disconnect the coil of the vibrating magnet or An object of the present invention is to provide a vibration sensing device of a vibrating feeder that can quickly detect a normal vibration of a vibrating feeder due to a mechanical defect.

Another object of the present invention is to provide a vibration sensing device of the vibrating feeder to detect the abnormal vibration of the rotating body equipment or piping system equipment to prevent the equipment trouble in advance.

1 is a schematic illustration showing a limestone manufacturing process of a conventional shaft kiln.

2 is a cross-sectional view showing a control configuration method of a conventional vibrating feeder.

3 to 4 is a block diagram of a vibration sensing device of the vibrating feeder according to the present invention.

5a to 5b is a detailed view of the vibration detection means of the vibration sensing device of the vibrating feeder of the present invention.

6 is an operation time chart of the vibration sensing device of the vibrating feeder of the present invention.

<Explanation of symbols of main parts of drawing>

10: shaft kiln 10a: COG gas

10b: air 11: vibration detection means

11a: spring 11b: detection rod

11c: tip portion 11d: screw portion

11e: insulation cover 11f: bolt

11g: fixed part 12: vibration detection control means

12a, 12b: Amplifier 12c, 12d: Transistor

12e, 12f: Phototransistor 12g, 12h: Flip-flop

12i: relay 12j: delay circuit

14a: lead wire 20: vibrating feeder

20a: control panel 20b: thyristor

20c: Amplifier 20d: Magnet

21: protective cover 21a: cable jack

21b: Hole 21c: Plug

30: charging hopper 30a: hopper

40: screen 50: belt conveyor

60: DCS 70: start / stop

80: setting unit 90: monitor

In the vibration sensing device of the vibrating feeder to detect the vibration of the vibrating feeder installed on the lower part of the hopper of the present invention for achieving the above object, a spring for converting the vibration of the vibrating feeder into displacement, and is installed in the center of the spring It is fixed with bolts to prevent the clearance between the fixed part and the threaded part, and it is insulated from the upper part of the threaded part to the tip of the detection rod with insulation coating to adjust the sensitivity of spring displacement, and when the vibration of the vibrating feeder occurs, the spring and the detection rod Vibration detection means comprising a lead wire for transmitting a displacement signal according to contact; And vibration sensing control means configured to receive a displacement signal according to a contact from the lead wire to determine whether the vibrating feeder is vibrated, and to output a vibration detection signal according to whether the vibrating feeder is vibrated to an external display means through a cable jack. Characterized in that it comprises a.

In addition, the vibration sensing device of the vibrating feeder of the present invention is an adjustment hole which is installed to move the detection rod up and down by using a screwdriver to adjust the sensitivity of the spring displacement, and foreign matter inflow to prevent the inflow of foreign matter into the interior Further comprising a protective cover having a plug for preventing.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Figure 3 shows an embodiment of the vibration sensing device of the vibrating feeder according to the present invention, look at the components of the vibration sensing device of the vibrating feeder according to the following.

First, the present invention is largely connected to the spring 11a for converting the vibration of the vibrating feeder 20 into displacement, the fixing portion 11g fixed to the center of the spring 11a, and the fixing portion to adjust the sensitivity of the spring displacement. It consists of a detection rod (11b) that can be used, and the detection rod (11b) uses copper with good conductivity and insulates from the middle except for the tip portion (11c) to the screw portion (11d) with an insulating coating (11e), and vibration When generated, the lead wire 14a for transmitting the contact signal between the spring 11a and the detection rod 11b and the contact signal (displacement signal) transmitted through the lead wire are applied to determine whether the vibrating feeder is vibrated, and the vibrating feeder is determined. Vibration detection control means 12 for outputting a vibration detection signal according to the vibration of the 20 to the external display means 90 through the cable jack 21a.

The vibration sensing control means 12 comprises first and second amplification elements 12a and 12b, first and second phototransistors 12e and 12f, first and second RS flip-flops 12g and 12h, and the like. And a protective cover 21 for protecting the cable jack 21a and the vibration detecting means 11 for outputting the vibration signal to the outside, and the protective cover 21 can adjust the detection rod 11b from the outside. The hole 21b and the plug 21c are provided.

Looking at the vibration detection means 11 of the vibrating feeder 20 of the present invention with reference to Figure 4 in more detail.

When the displacement measuring spring 11a vibrates when it is attached to the vibrating magnet 20d and vibrates, a regular contact phenomenon (pulse signal) is generated between the spring 11a and the detection rod 11b at the center of the spring. Occurs.

The contact signal is inputted to the adjacent vibration sensing control means 12 and inputted, and then outputs a vibration sensing signal to the outside through the cable jack 21a. The vibration detecting means 11 and the vibration detecting control means 12 are protected by a protective cover 21, and an adjustment hole 21b is formed in the upper portion of the protective cover 21 to detect the sensitivity using a screwdriver 11b. Turn to move the detection rod 11b up and down. In order to prevent foreign substances from flowing into the protective cover 21 after the adjustment is completed, a foreign material inflow prevention plug 21c is provided.

5A to 5B show a detailed view of the vibration detecting means 11 of the vibration sensing device of the vibrating feeder 20 of the present invention, and shows the displacement state of the spring 11a when the feeder vibrates.

In order to prevent the clearance between the fixing portion 11g and the detection rod screw portion 11d due to vibration, it is fixed with a bolt 11f, and the detection rod 11b is insulated from the upper end of the screw portion 11d to the detection rod tip portion 11c. Insulation with 11e prevents false signals.

Hereinafter, the operation of the vibration sensing device of the vibrating feeder will be described with reference to FIGS. 3 to 5 as follows.

First, the vibration sensing device is mounted on the side of the vibrating magnet 20d, and when the vibrating feeder 20 starts to vibrate, the displacement measuring spring 11a corresponding to the vibration vibrates.

At this time, the detection rod 11b at the center of the spring 11a is in regular contact with the spring, and the contact phenomenon is inputted by the vibration sensing control means 12 through the lead wire 14a connected to the spring and the fixing portion 11g. Is passed to signal 14.

When the input signal 14 is turned on due to vibration, the negative photo input of the first amplifying element 12a is lower than the positive side so that the first phototransistor is turned on when the first transistor 12c is turned on. 12e conducts to set the first RS flip-flop 12g.

Then, the output of the first R-S flip-flop 12g through the OR gate to set the second R-S flip-flop 12h to excite (sort) the relay 12i to prevent chattering. The excited relay 12i is excited until the reset input is applied to the first and second R-S flip-flops 12g and 12h regardless of the input signal. That is, the sort state continues until the reset signal is applied to the first and second R-S flip-flops 12g and 12h. The excited relay 12i output is input to the DCS 60 to accurately display the operating state of the actual vibrating feeder 20 on the cab monitor 90.

On the other hand, if the vibration stops at any moment while continuing the vibration, the positive input of the second amplifying element 12b becomes higher than the negative side, and the second transistor after a predetermined time delay in the delay circuit 12j. 12d is conducted to conduct the second phototransistor 12f.

On the output side of the second phototransistor 12f, a two-input AND gate is used to input the output of the second phototransistor 12f and the output of the OR gate to the AND gate, and output the first and second flip-flops 12g and 12h. The contributor is turned off to turn off the contributor 12i.

3 and 6 show the operation time chart by the vibration sensing device 1 of the vibrating feeder 20 of the present invention.

First, when the vibration sensing device senses the vibration, the output Q1 (12g) of the first RS flip-flop is at a high level. At this time, a chatter phenomenon may occur, but in the present invention, Q2 of the second RS flip-flop 12h is present. The output will have a stable high level.

At the same time as the Q2 output of the second RS flip-flop 12h, the output relay 12i is also excited to maintain the vibration sensing state, and when the vibration stops and there is no vibration for more than T seconds, the reset input becomes a high level and the first and second RS flip-flops When the outputs of the Q1 and Q2 terminals of the flops 12g and 12h go low, the output relay also goes low to turn off the excited relay 12i.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention is not limited to the contents described in the accompanying drawings and the detailed description of the specification.

As described above, according to the present invention, the vibration of the vibrating feeder is normally detected due to coil disconnection or mechanical defect of the vibrating magnet by accurately detecting the actual vibration of the vibrating feeder to determine whether the vibrating feeder is normally operated. If not, it can be detected quickly.

In addition, by detecting the abnormal vibration of the rotating body equipment or piping system equipment to prevent equipment troubles in advance.

Claims (2)

In the device for detecting the vibration of the vibrating feeder installed in the lower hopper, A spring 11a for converting the vibration of the vibrating feeder 20 into displacement, It is installed at the center of the spring and is fixed with a bolt 11f to prevent the clearance between the fixing portion 11g and the screw portion 11d, and is insulated with an insulating coating 11e from the upper end of the screw portion 11d to the detection rod tip portion 11c. Detection rod 11b which can adjust the sensitivity of the spring displacement, Vibration detection means (11) comprising a lead wire (14a) for transmitting a displacement signal according to contact between the spring (11a) and the detection rod (11b) when the vibration of the vibrating feeder (20) occurs; And The vibration signal of the vibrating feeder 20 is determined by receiving a displacement signal according to the contact from the lead wire 14a, and the vibration detection signal according to the vibration of the vibrating feeder 20 is applied to the cable jack 21a. Vibration detection device of the vibrating feeder, characterized in that it comprises a vibration detection control means (12) configured to output to an external display means (90) through. 2. The adjusting hole (21b) according to claim 1, wherein the adjusting hole (21b) is installed to move the detection rod (11b) up and down using a driver so that the sensitivity of the spring (11a) displacement can be adjusted. Vibrating sensing device of the vibrating feeder, characterized in that it further comprises a protective cover (21) having a plug for preventing foreign matter inflow to prevent the inflow of foreign matter into the interior (21c).