SU1456226A1 - Extremum analyser of intramill filling - Google Patents

Abstract

The invention relates to the automation of ball mills and can be used in the cement, energy, and other industries of the industry, which allows to increase the accuracy of control of the intramill filling due to the direct and continuous location of the ball in a compensatory manner. The device contains a movable carriage with two noise sensors 6 and 7 fixed to it, a kinematic mechanism for moving the carriage in the form of two support blocks 10 and a traction unit 11 mounted on the axis of the pivot. the versatile motor 12, the comparator 13, the generator 14, the amplifier 15 and the feedback sensor 16 with the recording device. 3 silt

Description

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This invention relates to the automation of ball mills and can be used in cement, energy and other industries.

The purpose of the invention is to improve the accuracy of control of intramill filling due to the direct and continuous finding of the ball in a compensatory way.

Fig. 1 shows a structural block diagram and the construction of an extremal mill grinder filling analyzer; FIG. 2 is a section A-A in FIG. Fig 3 is a view of B in Fig.2.

Extreme analyzer of intramill filling of the mill with

It is known that the maximum sound zone, located along the entire length of the ball mill, is shifted up or down. On the side of the mill, the factors include: the speed of rotation of the mill, the type and state at the moment of an armored lining, the number

holds shell 1 and armor fire 2.

The mill is filled with grinding balls. 20 from the whole range of external and At a distance of 50-JOO mm from the internal factors mill. To the internal case installed 3 analyzer. The housing faces the concentric side of the mill with concentric guides 4, limited by an arc, in which 25 and a gauge. their bodies, their aspiradion are located the mobile carriage 5, the regime, etc. The external factors. With two sensors fixed on it, are: the amount and the physical and physical noise 6 and 7. Sensors on the board are installed. material characteristics. Everything

I, in the vertical plane, these factors, which, collectively, one above the other with an intercenter distribution, define the concept of intramundane

I stand 60-80 mm. In order to reduce treble filling, they act on the trajectories between the carriage 5 and the guides of falling balls on the heel, shifting 4 in the carriage, fluoroplastic her upward or downward along the arc on the side-bearings 8 of the slide are applied. On the outdoor tank and accordingly

I surface of the guides 4 over the entire 35 ° maximum sound. Arc

 a gasket 9 of lacquer fabric is installed in length, preventing the ingress of dust into the interior of the device and on the sensors 6 and 7,

; BUT freely flowing mill noise

I tsy. The carriage 5 design, moving-40 tracking the extremum of the acoustic in the grooves of the guides 4, shows f in the plane of the cross section of FIGS. 2 and 3, the kinematic mechanism of the mill, determined by the double displacement of the moving carriage 5 with noise sensors 6 and 7 . These sensors 6 and 7 in the guides 4 are located one above the other in it from two support blocks 10 and t of the 45 cross-sectional plane so that it is outside the starting block 1, set as an axis depending on their location noise extremum one of the sensors has a signal output greater than the other, and only when

stops at an angle of less than 360 °, covers-50 movable carriage 5 with the help of kinevuschuch the whole arc. For a visual acceleration mechanism, the observation of the device operation in the process along the axis of the extremum will be set, the signals on the alignment on the surface of the block 11 of the output of the sensors will be equal between the applied scale, graduated to itself. The slightest displacement of the extremum degrees of the arc relative to a still-55 P and downwards will result in a difference arrow. The scale is separated by the hermetic stresses at the microphone output, which is clear. glass window on the housing 3 given to the comparator 13. The output of the device from the dusty atmosphere. In comparator 13, the difference between the output signals from sensors 6 and 7 of the current values from the outputs is limited by the limiting value of the zone of incidence of the balls. The design of the extreme analyzer is based on the compensatory principle of search and

reversible electric motor 12 direct current. Rotation of the traction unit relative to the axis is limited.

on the comparator 13 and then on the generator 14, the amplifier 15 and the terminals of the reverse electric motor 12; The feedback sensor 16 is mechanically connected to the axis of the traction unit 11 (for example, potentiometric, induction, etc.). A signal from sensor 16, proportional to the current value of the measured parameter, is fed to a recording device.

The extremal analyzer in the burdock and mill filling works in the following way.

It is known that the maximum sound zone, located along the entire length of the ball mill, is shifted up or down. On the side of the mill,

Factors include: the speed of rotation of the mill, the type and condition of the current armor, the number

from a variety of external and internal factors. To internal and product mix. their bodies, the asradiation regime, etc. To external factors .- refers: the number and physical-mechanical characteristics of the material. Everything

° maximum sound. Arc

limits the limit value of the area of falling balls. The design of the extreme analyzer is based on the compensatory principle of search and

krofonov. The signal from comparator 13 is fed to a controlled oscillator of 14 rectangular pulses. The generator 14 converts the signal level (its polarity and amplitude) at the input to various bore holes at the output. This signal is amplified in the differential amplifier 15 and controls the operation of the reversing motor 12. The motor control circuit is assembled so that the kinematically mechanism moves the board with the sensors in the direction of compensating for the noise difference. For example, the noise extremum, which characterizes the location of the ball joint, is located above the carriage 5 with the sensors, then the upper sensor will have a larger output, eg. than the lower and reversing motor will move the carriage with sensors up to full noise compensation, and vice versa.

Useful signal intramuscular

Bride ball mills in space. So, mounted motionless on the stand relative to the ground-f. the noise sensor needs to be rebuilt every 3-4 days (moved in height) by intuitively finding the fifth mill.

The extreme internal 10 millimeter analyzer allows, with high accuracy and reliability, to directly search and track the location of the ballpoint, which fully characterizes the grinding process in any ball mills.

Claims (1)

Invention Formula 20 An extremal analyzer of intramill filling, containing two noise sensors and an amplifier, characterized in that the aim of increasing the accuracy of the control of the filling, recorded by the extremal-intramillary filling due to the analyzer, is an absolutely invariant direct and continuous naked race. ten to the disturbance signal of the neighboring melt ny in a compensatory way, prostrate or other mechanisms, as it is equipped with a comparator, a generator; rectangular pulses, reversible any signal in intensity and periodicity will be simultaneously and equally as a motor, a feedback sensor The K0BO will act on both of the adjacent sensors, without changing the ratio of useful signals. The extreme analyzer responds not to a change in the overall intensity and its character, but to the difference in noise according to the simplest logic: more - less. Another principal advantage of an extreme analyzer compared with any noise or vibration sensors is the time invariance of the monitored parameter from the drift of the static noise characteristic due to a change in polo35 40 with the recording device, the noise sensors are made to move relative to the mill shell from the traction unit mounted on the axis of the reversible electric motor, and the outputs of the noise sensors are connected to the corresponding inputs of the comparator, the output of which is connected through successively connected amplifier and square pulse generator to a reversible motor, a kinematichka connected to a feedback sensor with a recording device.  . and 14562264 Bride ball mills in the country. Thus, a mounted noise sensor on a stand relative to a chalk noise sensor needs to be rebuilt every 3-4 days (moved in height) by intuitively finding the top of the mill. The extreme internal mill analyzer allows, with high accuracy and reliability, to directly search for and track the location of the ballpoint, which fully characterizes the grinding process in any ball mills. Invention Formula An extremal analyzer of intramill filling, containing two noise sensors and an amplifier, characterized in that, with five 0 with the recording device, the noise sensors are made to move relative to the mill shell from the traction unit mounted on the axis of the reversible electric motor, and the outputs of the noise sensors are connected to the corresponding inputs of the comparator, the output of which is connected through successively connected amplifier and square pulse generator to a reversible motor, a kinematichka connected to a feedback sensor with a recording device. 1st year 8ad B Fo-gz