CN110671929A - Material quantity detection control method and device and eccentric swing type rotary furnace - Google Patents
Material quantity detection control method and device and eccentric swing type rotary furnace Download PDFInfo
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- CN110671929A CN110671929A CN201911022365.3A CN201911022365A CN110671929A CN 110671929 A CN110671929 A CN 110671929A CN 201911022365 A CN201911022365 A CN 201911022365A CN 110671929 A CN110671929 A CN 110671929A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/42—Arrangement of controlling, monitoring, alarm or like devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0075—Regulation of the charge quantity
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- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The application discloses a material quantity detection control method, which is applied to an eccentric swing type rotary furnace and comprises the following steps: acquiring an upward swing driving parameter value required when the driving roller swings upward to reach the detection time; acquiring a lower swing driving parameter value required when the driving roller swings downwards to reach the detection moment; determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value; and controlling the feeding flow and/or the discharging flow of the roller according to the material quantity. Because the size of the material volume in the roller directly influences the driving parameter value required by the movement of the driving roller, the material volume in the roller can be judged by detecting the driving parameter value of the driving roller, so that the material volume in the roller can be accurately obtained, the feeding and discharging of the roller can be conveniently controlled, and the process requirements can be met. The application also discloses a control device based on the material quantity detection control method and an eccentric swing type rotary furnace.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to a material quantity detection control method. Also relates to a control device based on the material quantity detection control method and an eccentric swing type rotary furnace.
Background
The rotary furnace is important equipment in chemical production and is used for carrying out heat treatment on materials. The rotary furnace is divided into a swing type rotary furnace and a rotary type rotary furnace according to different rotation forms, a roller of the swing type rotary furnace swings around a swing axis in a reciprocating mode within a certain angle range, the swing type rotary furnace is divided into an eccentric swing type rotary furnace and a concentric swing type rotary furnace, the eccentric swing type rotary furnace means that the swing axis of the roller is not overlapped with the axis of the roller, and the concentric swing type rotary furnace means that the swing axis of the roller is overlapped with the axis of the roller.
The existing eccentric swing type rotary furnace mainly comprises a roller, a driving device, a transmission device, a control device, a feeding device, a discharging device and a balancing weight, wherein the control device controls the driving device to act, the roller is driven to swing back and forth through the driving device and the transmission device, and the control device controls the feeding device and the discharging device to feed and discharge materials. The balancing weight and the roller are symmetrically arranged relative to the swinging axis to balance the swinging of the roller. In the operation process of the eccentric swing type rotary furnace, due to different processes, the requirements on the material quantity in the roller are different, and the feeding flow rate needs to be controlled. In the prior art, the indirect control of the material quantity in the eccentric oscillating type rotary furnace can be realized only by adjusting the feeding flow of the eccentric oscillating type rotary furnace, but the material quantity in the eccentric oscillating type rotary furnace cannot be measured in real time, so that the feeding flow control has great blindness and the process is easy to be out of control.
Therefore, how to detect the material amount in the eccentric swing type rotary furnace becomes a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a material amount detection control method for accurately detecting the material amount in an eccentric oscillating type rotary furnace.
Another object of the present invention is to provide a control device and an eccentric oscillating type rotary furnace based on the material amount detection control method to accurately control the material amount in the eccentric oscillating type rotary furnace.
In order to achieve the purpose, the invention provides the following technical scheme:
a material quantity detection control method is applied to an eccentric swing type rotary furnace, a roller of the eccentric swing type rotary furnace swings around a swing axis in a reciprocating mode, the swing axis of the roller does not coincide with the axis of the roller, a balancing weight is arranged on the roller, the balancing weight and the roller are symmetrically arranged relative to the swing axis, and the material quantity detection control method comprises the following steps:
acquiring an upward swing driving parameter value required when the driving roller swings upward to reach the detection time;
acquiring a lower swing driving parameter value required for driving the roller to swing downwards to reach the detection time;
determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value;
and controlling the feeding flow and/or the discharging flow of the roller according to the material quantity.
Preferably, in the above method for detecting and controlling a material amount, the determining a material amount in the drum according to the upper swing driving parameter value and the lower swing driving parameter value specifically includes:
comparing the magnitude of the upper swing driving parameter value and the magnitude of the lower swing driving parameter value;
if the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is larger than the first absolute driving parameter difference, determining that the material amount in the roller at the moment is larger than the set standard material amount;
if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, determining that the material amount in the roller at the moment is smaller than a set standard material amount;
and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference, determining that the material amount in the roller at the moment is within the range of the set standard material amount.
Preferably, in the above method for detecting and controlling the amount of material, the controlling the feeding flow rate and/or the discharging flow rate of the drum according to the amount of material specifically comprises:
if the material amount in the roller is larger than the standard material amount, controlling the feeding flow of the roller to be reduced and/or controlling the discharging flow of the roller to be increased;
if the material amount in the roller is less than the standard material amount, controlling the feeding flow of the roller to increase and/or controlling the discharging flow of the roller to decrease;
and if the material quantity in the roller is within the range of the standard material quantity, controlling the feeding flow and/or the discharging flow of the roller to be unchanged.
Preferably, in the above-mentioned material amount detection control method, the upper swing drive parameter value and the lower swing drive parameter value are both a drive current value or a drive pressure value.
Preferably, in the method for detecting and controlling the amount of material, the detection time of the eccentric oscillating type rotary furnace is to obtain an upper oscillating driving parameter value and a lower oscillating driving parameter value required by the oscillation of the drum when the drum oscillates to a state that an included angle between a plane where the axis of the drum and the oscillating axis are located and a horizontal plane reaches a set angle.
Preferably, in the above-described material amount detection control method, the set angle is-30 ° to 60 °.
The invention also provides a control device, which is applied to an eccentric swing type rotary furnace, wherein a roller of the eccentric swing type rotary furnace swings around a swing axis in a reciprocating way, the swing axis of the roller does not coincide with the axis of the roller, a balancing weight is arranged on the roller, and the balancing weight and the roller are symmetrically arranged relative to the swing axis, and the control device comprises:
a driving parameter value obtaining unit for obtaining an upper swing driving parameter value and a lower swing driving parameter value required for driving the drum to swing upward and downward to reach a detection time;
the material quantity determining unit is used for determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value;
and the feeding and discharging control unit is used for controlling the feeding flow and/or the discharging flow of the roller according to the material quantity.
Preferably, in the above control device, the material amount determining unit is configured to compare the values of the upper swing driving parameter and the lower swing driving parameter, and if a difference obtained by subtracting the lower swing driving parameter from the upper swing driving parameter is greater than a first absolute driving parameter difference, determine that the material amount in the drum at this time is greater than a set standard material amount; if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, determining that the material amount in the roller at the moment is smaller than a set standard material amount; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to a third absolute driving parameter difference, determining that the material amount in the roller at the moment is within the range of the set standard material amount.
Preferably, in the above control device, the feeding and discharging control unit is configured to control the feeding flow rate of the drum to decrease and/or control the discharging flow rate of the drum to increase if the amount of the material in the drum is greater than the standard amount of the material, control the feeding flow rate of the drum to increase and/or control the discharging flow rate of the drum to decrease if the amount of the material in the drum is less than the standard amount of the material, and control the feeding flow rate and/or discharging flow rate of the drum to be unchanged if the amount of the material in the drum is within the range of the standard amount of the material.
Preferably, in the above control device, the upper swing drive parameter value and the lower swing drive parameter value are both a drive current value or a drive pressure value.
Preferably, in the above control apparatus, the detection time of the eccentric oscillating type rotary kiln is to obtain a driving parameter value required for the oscillation of the drum when the drum oscillates to a state where an included angle between a plane where the axis of the drum and the oscillation axis are located and a horizontal plane reaches a set angle.
Preferably, in the control device described above, the set angle is-30 ° to 60 °.
The invention also provides an eccentric oscillating type rotary furnace, which comprises a roller, a driving device and a transmission device, wherein a power output shaft of the driving device is in transmission connection with the roller through the transmission device; the swing axis of cylinder with the axis of cylinder does not coincide, be provided with the balancing weight on the cylinder, the balancing weight with the cylinder is relative swing axis symmetry sets up, still includes:
the driving sensor is connected with the driving device and used for detecting a driving parameter value of the driving device; a position sensor for detecting whether the drum moves to a detection time;
and the control device is connected with the driving device, the driving sensor and the position sensor and is used for acquiring an upper swing driving parameter value and a lower swing driving parameter value of the driving device, which are detected by the driving sensor when the position sensor detects that the roller moves to a detection time and the roller swings upwards and downwards to the detection time, comparing the upper swing driving parameter value with the lower swing driving parameter value, determining the material amount in the roller according to the size relationship between the upper swing driving parameter value and the lower swing driving parameter value, and controlling the feeding flow and/or the discharging flow of the roller according to the material amount.
Preferably, in the above eccentric oscillating-type rotary furnace, the driving device is a motor, the driving sensor is a current sensor, and the upper oscillating driving parameter value and the lower oscillating driving parameter value are both driving current values;
or the driving device is a hydraulic motor, the driving sensor is a pressure sensor, and the upper swing driving parameter value and the lower swing driving parameter value are driving pressure values.
Preferably, in the above eccentric oscillating type rotary furnace, the position sensor is arranged on the eccentric oscillating type rotary furnace in a position such that the control device acquires a driving parameter value detected by the driving sensor when the drum oscillates to a position where an included angle between a plane where the axis of the drum and the oscillation axis is located and a horizontal plane reaches a set angle.
Preferably, in the above eccentric oscillating type rotary furnace, after the control device compares the magnitudes of the upper oscillating drive parameter value and the lower oscillating drive parameter value,
if the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is larger than the first insulation driving parameter difference, controlling the feeding flow of the roller to be reduced and/or controlling the discharging flow of the roller to be increased; if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, controlling the feeding flow of the roller to increase and/or controlling the discharging flow of the roller to decrease; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is smaller than a third absolute driving parameter difference value, controlling the feeding flow and/or the discharging flow of the roller to be unchanged.
Preferably, in the above-described eccentric oscillating type rotary furnace, the set angle is-30 ° to 60 °.
Preferably, in the above-mentioned eccentric oscillating type rotary kiln, the position sensor is an angle sensor or a trigger sensor.
Preferably, in the above eccentric oscillating type rotary furnace, the transmission device comprises a gear ring and a gear, the gear ring is arranged on the outer wall of the drum, the axis of the gear ring is the oscillating axis of the eccentric oscillating type rotary furnace, and the power output shaft of the driving device is in transmission connection with the gear ring through the gear;
or the transmission device comprises a supporting ring and a supporting wheel, the supporting ring is arranged on the outer wall of the roller, the axis of the supporting ring is the swinging axis of the eccentric swinging type rotary furnace, and a power output shaft of the driving device is in transmission connection with the supporting ring through the supporting wheel.
Preferably, the eccentric oscillating type rotary furnace further comprises a speed reducer, and two ends of the speed reducer are in transmission connection with the driving device and the transmission device respectively.
Compared with the prior art, the invention has the beneficial effects that:
the material quantity detection control method provided by the invention is applied to an eccentric swing type rotary furnace, a roller of the eccentric swing type rotary furnace swings around a swing axis in a reciprocating way, the swing axis of the roller does not coincide with the axis of the roller, a balancing weight is arranged on the roller, the balancing weight and the roller are symmetrically arranged relative to the swing axis, and the material quantity detection control method comprises the following steps: acquiring an upward swing driving parameter value required when the driving roller swings upward to reach the detection time; acquiring a lower swing driving parameter value required when the driving roller swings downwards to reach the detection moment; determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value; and controlling the feeding flow and/or the discharging flow of the roller according to the material quantity. Because the size of the material volume in the roller directly influences the driving parameter value required by the movement of the driving roller, the material volume in the roller can be judged by detecting the driving parameter value of the driving roller, so that the material volume in the roller can be accurately obtained, the feeding and discharging flow of the roller can be conveniently controlled, and the process requirements can be met.
The control device and the eccentric oscillating type rotary furnace provided by the invention are based on the material quantity detection control method, so that the material quantity in the eccentric oscillating type rotary furnace can be accurately obtained, the feeding and discharging flow can be conveniently controlled, and the process requirements can be met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a partial structure of an eccentric oscillating type rotary kiln according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic flow chart of a material amount detection control method according to an embodiment of the present invention.
Wherein, 1 is a roller, 2 is a gear ring, 3 is a gear, 4 is a speed reducer, 5 is a driving sensor, 6 is a driving device, 7 is a control device, 8 is a supporting ring, 9 is a balancing weight, 10 is a supporting riding wheel, A is the axis of the roller, and B is a swing axis.
Detailed Description
The core of the invention is to provide a material quantity detection control method which can accurately detect the material quantity in the eccentric swing type rotary furnace.
The invention also provides a control device based on the material quantity detection control method and the eccentric oscillating type rotary furnace, which can accurately detect the material quantity in the eccentric oscillating type rotary furnace.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a material amount detection control method, which is applied to an eccentric oscillating type rotary furnace, wherein a roller 1 of the eccentric oscillating type rotary furnace oscillates back and forth around an oscillation axis B, the oscillation axis B of the roller 1 is not coincident with an axis a of the roller, a balancing weight 9 is disposed on the roller 1, and the balancing weight 9 and the roller 1 are symmetrically disposed with respect to the oscillation axis B. The roller 1 of the eccentric swing type rotary furnace is in transmission connection with a driving device 6 through a transmission device, the transmission device is driven through the driving device 6, the roller 1 is driven to swing back and forth, in the movement process of the roller 1, the driving device 6 outputs driving parameters, the driving parameters are different when the driving device 6 is different, preferably, the driving device 6 is a motor or a hydraulic motor, the driving parameters corresponding to the motor are driving current, and the driving parameters corresponding to the hydraulic motor are driving pressure, and the method comprises the following steps:
step S100, an up-swing drive parameter value required when the drive drum 1 swings up to the detection time is acquired. When the drum normally works, the drum 1 is positioned above the balancing weight 9, the drum 1 and the balancing weight 9 are symmetrical relative to the swinging axis B, therefore, when the drum 1 swings upwards, the balancing weight 9 swings downwards, because the materials in the drum 1 and the drum 1 have weight, the drum 1 has vertical downward gravity moment relative to the swinging axis B, the balancing weight 9 also has weight, therefore, the balancing weight 9 also has vertical downward gravity moment relative to the swinging axis B, if unbalance exists between the gravity moment of the drum 1 and the gravity moment of the balancing weight 9, the unbalanced moment can generate a power-assisted action or a resistance action on the upward swinging of the drum 1, when the weight of the drum 1 and the material quantity is greater than the weight of the balancing weight 9, the unbalanced moment generates a resistance action on the drum 1, and on the contrary, the power-assisted action is generated. When a resistance effect is generated, in order to enable the drum 1 to continuously swing upwards, the driving parameter value of the driving device 6, namely the required upward swing driving parameter value, is correspondingly increased, and when an assisting effect is generated, the driving parameter value of the driving device 6, namely the required upward swing driving parameter value, can be reduced, even the unbalanced moment is larger than the swing resistance moment of the rotary kiln, the drum 1 automatically moves upwards, and the driving parameter value is 0 (even a negative value).
Step S200, a lower swing drive parameter value required when the drive drum 1 swings downward to reach the detection time is acquired. Similarly, if the weight of the drum 1 and the material is greater than the weight of the counterweight 9, the gravity moment of the drum 1 is greater than the gravity moment of the counterweight 9, the unbalanced moment between the two produces the assisting action to the downward swing of the drum 1, correspondingly, the driving parameter value of the driving device 6, i.e., the required downward swing driving parameter value can be reduced, and if the weight of the drum 1 and the material is less than the weight of the counterweight 9, the gravity moment of the drum 1 is less than the gravity moment of the counterweight 9, the unbalanced moment between the two produces the resistance action to the downward swing of the drum 1, correspondingly, the driving parameter value of the driving device 6, i.e., the required downward swing driving parameter value is increased.
And step S300, determining the material quantity in the roller 1 according to the upper swing driving parameter value and the lower swing driving parameter value.
And S400, controlling the feeding flow and/or the discharging flow of the roller 1 according to the material quantity. When the material amount in the roller 1 is more or less, the feeding flow and/or the discharging flow of the roller 1 can be controlled, so that the material amount in the roller 1 meets the process requirement.
It can be seen that if the material amount is large, the upper swing driving parameter value required by the upward swing of the drum 1 is increased, the lower swing driving parameter value required by the downward swing of the drum 1 is decreased, and the upper swing driving parameter value is greater than the lower swing driving parameter value. And if the material amount is less, the upper swing driving parameter value is smaller than the lower swing driving parameter value. When the material amount is proper, the roller 1 and the balancing weight 9 reach balance, and the lower swing driving parameter value is equal to the lower swing driving parameter value. Therefore, it is a necessary condition to determine the material amount of the drum 1 to acquire the up swing driving parameter value and the down swing driving parameter value of the upward swing of the drum 1.
In the method, the material quantity in the roller 1 is judged by detecting the driving parameter value of the driving roller 1 driven by the driving device 6 because the material quantity in the roller 1 directly influences the driving parameter value required by the movement of the driving roller 1, so that the material quantity in the roller 1 can be accurately obtained, the feeding and discharging flow of the roller 1 can be conveniently controlled, and the process requirements can be met.
As an optimization, in the present embodiment, in acquiring the up swing drive parameter value required when the drive drum 1 swings up to the detection time in step S100, and in acquiring the down swing drive parameter value required when the drive drum 1 swings down to the detection time in step S200, the up swing and the down swing are in the same swing period, which means that the drum 1 swings from the left side to the right side and then from the right side to the left side. Because in the same swing period, the material change difference in the roller 1 can be ignored, and the obtained upper swing driving parameter value and the lower swing driving parameter value are more comparable.
Of course, the upward swing and the downward swing may also be not in the same swing period, but in adjacent swing periods, such as in minutes. The material quantity of the drum 1 may be determined according to the average upper swing drive parameter value and the average lower swing drive parameter value after averaging the plurality of upper swing drive parameter values in the adjacent swing periods and averaging the plurality of lower swing drive parameter values in the adjacent swing periods.
Further, if the step S300 is optimized, the step S300 of determining the amount of the material in the drum according to the upper swing driving parameter value and the lower swing driving parameter value specifically includes:
comparing the magnitude of the upper swing driving parameter value with the magnitude of the lower swing driving parameter value;
if the upper swing driving parameter value is larger than the lower swing driving parameter value, and the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is larger than the first absolute driving parameter difference (the first absolute driving parameter difference is a positive value), that is, the upper swing driving parameter value is larger than the lower swing driving parameter value, and exceeds an absolute threshold, it is determined that the material amount in the roller 1 at the moment is larger than a set standard material amount, the standard material amount is a material amount range when the roller 1 with the material and the counterweight 9 reach swing balance, the gravity moment of the roller 1 and the material is equal to the gravity moment of the counterweight 9, and the standard material amount is used as a reference value range for judging the material amount in the roller 1. Since the weight of the drum 1 and the weight of the weight 9 are known, the range of the standard material amount when the drum 1 and the weight 9 are balanced can be calculated, and the standard material amount is determined by the weight. And the larger the difference value between the upper swing driving parameter value and the lower swing driving parameter value is, the more the material amount in the roller 1 exceeds the standard material amount is.
If the upper swing driving parameter value is smaller than the lower swing driving parameter value, and the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than the second absolute driving parameter difference (the second absolute driving parameter difference is a positive value), that is, the lower swing driving parameter value is larger than the upper swing driving parameter value and exceeds an absolute threshold, it is determined that the material amount in the roller 1 at the moment is smaller than the set standard material amount. And the smaller the upper swing driving parameter value is, the lower swing driving parameter value is, the lower the material amount in the drum 1 is, the standard material amount is. Wherein the second absolute driving parameter difference may be equal to or offset from the first absolute driving parameter difference.
If the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference (the third absolute driving parameter difference is a positive value), that is, no matter the upper swing driving parameter value is greater than the lower swing driving parameter value or the upper swing driving parameter value is less than the lower swing driving parameter value, as long as the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference, it is determined that the material amount in the drum 1 at this time is within the range of the set standard material amount, and it indicates that the drum 1 and the counterweight 9 are in a balanced state. Wherein the third absolute driving parameter difference is equal to or slightly offset from the first absolute driving parameter difference and the second absolute driving parameter difference.
In this embodiment, if step S400 is optimized, the step S400 specifically includes controlling the feeding flow and/or the discharging flow of the drum 1 according to the material amount:
if the material amount in the roller 1 is larger than the standard material amount, the feeding flow of the roller 1 is controlled to be reduced and/or the discharging flow of the roller 1 is controlled to be increased. Normally, the standard material amount meets the material amount requirement of the general process, so when the material amount in the roller 1 is larger than the standard material amount, it means that the material amount in the roller 1 is larger than the material amount required by the process.
Similarly, if the material amount in the roller 1 is smaller than the standard material amount, the feeding flow of the roller 1 is controlled to be increased and/or the discharging flow of the roller 1 is controlled to be decreased, so that the material amount in the roller 1 meets the process requirement;
and if the material quantity in the roller 1 is within the range of the standard material quantity, controlling the feeding flow and/or the discharging flow of the roller 1 to be unchanged.
Of course, the standard material amount may not correspond to the material amount required by the general process, but the standard material amount may also be used as a reference value range, and the feeding flow rate and/or the discharging flow rate are specifically controlled according to the range that the material amount in the drum 1 is smaller than, greater than or equal to the reference value range. For example, when performing other processes, the feed flow of the drum 1 is controlled to increase and/or the discharge flow is controlled to decrease, even though the amount of material is greater than the standard amount of material but the amount of material required for the process is not yet achieved.
In the present embodiment, the timing of detection of the eccentric oscillating type rotary kiln is preferably such that a value of a drive parameter required for oscillation of the drum 1 is obtained when the drum 1 is oscillated until an angle between a plane in which the drum axis a and the oscillation axis B are located and a horizontal plane reaches a set angle θ. When the detection moment is set at the moment, the material in the roller 1 swings stably, and the force of the driving device 6 for driving the roller 1 is more stable, so that the driving parameter value output by the driving device 6 is more stable and accurate at the moment.
Further, the set angle θ is-30 ° to 60 °, more preferably 0 °. Namely, when the roller 1 swings to the angle between the plane where the roller axis A and the swing axis B are located and the horizontal plane reaches-30 degrees to 60 degrees, and more preferably 0 degree, the driving parameter value of the driving device 6 is obtained, at this time, the unbalanced driving force is the largest, and the detection effect is the best. Of course, the set angle θ may be other angles as long as a stable and effective drive parameter value can be obtained.
Based on the material amount detection control method described in the above embodiments, an embodiment of the present invention further provides a control device, which includes a driving parameter value obtaining unit, a material amount determining unit, and a feeding and discharging control unit. The driving parameter value obtaining unit is configured to obtain an upper swing driving parameter value and a lower swing driving parameter value required when the driving drum 1 swings upward and downward to reach the detection time, and a specific working principle is described above and is not described herein again; the material quantity determining unit is used for determining the material quantity in the roller 1 according to the upper swing driving parameter value and the lower swing driving parameter value; the feeding and discharging control unit is used for controlling the feeding flow and/or the discharging flow of the roller 1 according to the material quantity. The control device is applied to the eccentric swing type rotary furnace, the material quantity in the roller 1 can be accurately obtained according to the driving parameter value required by the detected driving device to drive the roller 1 to swing, and then the feeding and discharging can be controlled, so that the material quantity in the roller 1 can be accurately controlled to meet the process requirement.
Further, the material amount determining unit is configured to compare the values of the upper swing driving parameter and the lower swing driving parameter, and if the value of the upper swing driving parameter is greater than the value of the lower swing driving parameter and a difference obtained by subtracting the value of the lower swing driving parameter from the value of the upper swing driving parameter is greater than a first absolute driving parameter difference, determine that the material amount in the drum 1 at the time is greater than a set standard material amount; if the upper swing driving parameter value is smaller than the lower swing driving parameter value, and the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than the second absolute driving parameter difference, determining that the material amount in the roller 1 at the moment is smaller than the set standard material amount; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference, determining that the material amount in the roller 1 at the moment is in the range of the set standard material amount. The standard material amount is taken as a reference value.
In this embodiment, the feeding and discharging control unit is configured to control the feeding flow rate of the drum 1 to decrease and/or control the discharging flow rate of the drum to increase if the amount of the material in the drum 1 is greater than the standard amount of the material; if the material amount in the roller 1 is less than the standard material amount, controlling the feeding flow of the roller 1 to increase and/or controlling the discharging flow of the roller 1 to decrease; and if the material quantity in the roller 1 is within the range of the standard material quantity, controlling the feeding flow and/or the discharging flow of the roller 1 to be unchanged. The control mode is to control the process corresponding to the standard material amount so as to meet the material amount requirement of the process. Of course, the standard material amount can be only used as a numerical reference value range, and the material inlet and outlet flow of the roller 1 can be controlled according to the requirements of different technologies on the material amount.
Preferably, the upper swing drive parameter value and the lower swing drive parameter value are both drive current values or drive pressure values.
In the present embodiment, the detection timing of the eccentric oscillating type rotary kiln is preferably such that a value of a drive parameter required for the drive means 6 to drive the drum 1 to oscillate is acquired when the drum 1 oscillates until an angle between a plane in which the drum axis a and the oscillation axis B lie and a horizontal plane reaches a set angle θ.
Further, the angle θ is set to-30 ° to 60 °, and further to 0 °. Of course, the set angle θ may be other angles as long as a stable and effective drive parameter value can be obtained.
As shown in fig. 1 to 3, based on the material amount detection control method described in the above embodiments, an embodiment of the present invention also provides an eccentric oscillating type rotary kiln, in which a drum 1 is oscillated back and forth within a set angle range about an oscillation axis B, and the oscillation axis B of the eccentric oscillating type rotary kiln does not coincide with an axis a of the drum. The eccentric oscillating rotary furnace comprises a roller 1, a driving device 6, a transmission device, a balancing weight 9, a driving sensor 5, a control device 7 and a position sensor (not shown in the figure).
Wherein, the power output shaft of the driving device 6 is in transmission connection with the roller 1 through a transmission device; the swing axis B of the roller 1 is not coincident with the axis A of the roller, the roller 1 is provided with a balancing weight 9, the balancing weight 9 and the roller 1 are symmetrically arranged relative to the swing axis B, preferably, the balancing weight 9 is fixed on a supporting trunnion ring 8 on the outer wall of the roller 1, and the supporting trunnion ring 8 is supported by a supporting trunnion wheel 10 in a rolling way; the driving sensor 5 is connected with the driving device 6 and used for detecting the driving parameter value of the driving device 6; the position sensor is used for detecting whether the roller 1 moves to the detection moment; the control device 7 is connected to the driving device 6, the driving sensor 5 and the position sensor, and is configured to, when the position sensor detects that the drum 1 moves to the detection time, obtain an upper swing driving parameter value and a lower swing driving parameter value of the driving device 6 detected by the driving sensor 5 when the drum 1 swings upward and downward to the detection time, and compare the upper swing driving parameter value and the lower swing driving parameter value, where a magnitude relationship between the upper swing driving parameter value and the lower swing driving parameter value is related to a material amount of the drum 1. Determining the material quantity in the roller 1 according to the magnitude relation between the upper swing driving parameter value and the lower swing driving parameter value, and controlling the feeding flow and/or the discharging flow of the roller 1 according to the material quantity.
The working process and the working principle of the eccentric swing type rotary furnace are as follows: the roller 1 swings in a reciprocating mode under the driving action of the driving device 6, when the roller 1 moves to the triggering of the position sensor, namely the detection moment is reached, the control device 7 reads the driving parameter value of the driving device 6 detected by the driving sensor 5 at the moment, the control device 7 determines the material quantity in the roller 1 according to the driving parameter value, and controls the feeding flow and/or the discharging flow of the roller 1 according to the material quantity.
The eccentric oscillating type rotary furnace detects the driving parameter value of the driving device 6 driving the roller 1 to move by arranging the driving sensor 5 and the control device 7 to determine the material amount in the roller 1, thereby accurately controlling the feeding flow and/or the discharging flow to meet the process requirement.
In this embodiment, the driving device 6 is a motor, the driving sensor 5 is a current sensor, the current sensor detects an output current of the motor, and the upper swing driving parameter value and the lower swing driving parameter value are both driving current values; or the driving device 6 is a hydraulic motor, the driving sensor 5 is a pressure sensor, the pressure sensor detects the output pressure of the hydraulic motor, and the upper swing driving parameter value and the lower swing driving parameter value are driving pressure values.
Further, in this embodiment, after comparing the magnitudes of the upper swing driving parameter value and the lower swing driving parameter value, if the upper swing driving parameter value is greater than the lower swing driving parameter value, and the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is greater than the first absolute driving parameter difference, which indicates that the material amount of the drum 1 is greater than the standard material amount, the control device 7 controls the feed flow rate of the drum 1 to decrease and/or controls the discharge flow rate of the drum to increase, so as to appropriately decrease the material amount in the drum 1; if the upper swing driving parameter value is smaller than the lower swing driving parameter value, and the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than the second absolute driving parameter difference, which indicates that the material quantity of the roller 1 is smaller than the standard material quantity, the feeding flow of the roller 1 is controlled to be increased and/or the discharging flow of the roller 1 is controlled to be decreased, so as to properly increase the material quantity in the roller 1; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference, indicating that the material quantity of the roller 1 is within the range of the standard material quantity, controlling the feeding flow and/or the discharging flow of the roller 1 to be unchanged.
The requirement of some processes on the material amount is just suitable for the condition of the standard material amount, of course, for other processes, the standard material amount is only used as a numerical reference value range, and the feeding and discharging of the roller 1 are controlled according to the reference value range, so that the requirements of different processes on the material amount are met.
Further, in the present embodiment, the position sensor is provided on the eccentric oscillating type rotary kiln at the following positions: when the roller 1 swings until the included angle between the plane where the roller axis A and the swing axis B are located and the horizontal plane reaches the set angle theta, the position sensor triggers, and the control device 7 obtains the driving parameter value detected by the driving sensor 5.
In this embodiment, the angle θ is set to be-30 ° to 60 °, that is, the position sensor is set at a position on the eccentric swing-type rotary kiln, when the drum 1 swings to a position where the included angle between the horizontal plane and the plane where the drum axis a and the swing axis B are located reaches-30 ° to 60 °, the position sensor is triggered, so that the control device 7 obtains the driving parameter value detected by the driving sensor 5. The position sensor may be an angle sensor or a trigger sensor, and the trigger sensor is specifically a photoelectric sensor, a mechanical touch sensor, an electromagnetic sensor, or the like. When the position sensor is activated, the control device 7 acquires the drive parameter value detected by the drive sensor 5. The set angle theta is preferably 0 deg., and the position sensor is arranged at the position because when the roller 1 swings to the position, the material in the roller 1 moves smoothly, the force of the driving device 6 for driving the roller 1 is stable, and therefore, the driving parameter value output by the driving device 6 is stable and accurate at the moment. Of course, the detection may be performed at other positions as long as the drive parameter value of the drive device 6 can be detected.
In the embodiment, the transmission device comprises a gear ring 2 and a gear 3, the gear ring 2 is arranged on the outer wall of the roller 1, the axis of the gear ring 2 is the swing axis B of the eccentric swing type rotary furnace, and the power output shaft of the driving device 6 is in transmission connection with the gear ring 2 through the gear 3. When the rotary drum works, a power output shaft of the driving device 6 is in transmission connection with the gear ring 2 through the gear 3, the gear 3 is driven to rotate through the driving device 6, the gear ring 2 is driven to rotate, and the gear ring 2 drives the rotary drum 1 to move. Meanwhile, the roller 1 is supported in a rolling manner by the supporting support ring 8 and the supporting support wheel 10, so that the stable swing of the roller 1 is ensured.
The embodiment provides another transmission device which comprises a supporting ring and a supporting wheel, wherein the supporting ring is arranged on the outer wall of the roller 1, the axis of the supporting ring is the swinging axis B of the eccentric swinging type rotary furnace, a power output shaft of the driving device 6 is in transmission connection with the supporting ring through the supporting wheel, and the supporting wheel is positioned below the supporting ring and is meshed with the supporting ring. When the device works, a power output shaft of the driving device 6 is in transmission connection with the supporting ring through the supporting wheel, the supporting wheel is driven to rotate through the driving device 6, the supporting ring is further driven to rotate, and the supporting ring drives the roller 1 to move. Meanwhile, the roller 1 is supported in a rolling manner by the supporting support ring 8 and the supporting support wheel 10, so that the stable swing of the roller 1 is ensured.
As shown in fig. 1, in this embodiment, the eccentric oscillating type rotary kiln further includes a speed reducer 4, and two ends of the speed reducer 4 are respectively connected with a driving device 6 and a transmission device in a transmission manner.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (18)
1. The material quantity detection control method is characterized by being applied to an eccentric swing type rotary furnace, a roller of the eccentric swing type rotary furnace swings around a swing axis in a reciprocating mode, the swing axis of the roller does not coincide with the axis of the roller, a balancing weight is arranged on the roller, the balancing weight and the roller are symmetrically arranged relative to the swing axis, and the material quantity detection control method comprises the following steps:
acquiring an upward swing driving parameter value required when the driving roller swings upward to reach the detection time;
acquiring a lower swing driving parameter value required for driving the roller to swing downwards to reach the detection time;
determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value;
and controlling the feeding flow and/or the discharging flow of the roller according to the material quantity.
2. The material amount detection control method according to claim 1, wherein the determining of the size of the material amount in the drum according to the upper swing driving parameter value and the lower swing driving parameter value is specifically:
comparing the magnitude of the upper swing driving parameter value and the magnitude of the lower swing driving parameter value;
if the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is larger than the first absolute driving parameter difference, determining that the material amount in the roller at the moment is larger than the set standard material amount;
if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, determining that the material amount in the roller at the moment is smaller than a set standard material amount;
and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to the third absolute driving parameter difference, determining that the material amount in the roller at the moment is within the range of the set standard material amount.
3. The material quantity detection control method according to claim 2, wherein the controlling of the feeding flow rate and/or the discharging flow rate of the drum according to the material quantity is specifically:
if the material amount in the roller is larger than the standard material amount, controlling the feeding flow of the roller to be reduced and/or controlling the discharging flow of the roller to be increased;
if the material amount in the roller is less than the standard material amount, controlling the feeding flow of the roller to increase and/or controlling the discharging flow of the roller to decrease;
and if the material quantity in the roller is within the range of the standard material quantity, controlling the feeding flow and/or the discharging flow of the roller to be unchanged.
4. The material amount detection control method according to claim 1, wherein the upper swing drive parameter value and the lower swing drive parameter value are both a drive current value or a drive pressure value.
5. The material quantity detection control method according to any one of claims 2 to 4, wherein the detection time of the eccentric oscillating type rotary furnace is to obtain an upper oscillation driving parameter value and a lower oscillation driving parameter value required for the oscillation of the drum when the drum oscillates to a set angle between a plane where the axis of the drum and the oscillation axis are located and a horizontal plane.
6. The material amount detection control method according to claim 5, wherein the set angle is-30 ° to 60 °.
7. The control device is characterized by being applied to an eccentric oscillating type rotary furnace, a roller of the eccentric oscillating type rotary furnace oscillates around an oscillating axis in a reciprocating manner, the oscillating axis of the roller is not coincident with the axis of the roller, a balancing weight is arranged on the roller and is symmetrically arranged relative to the oscillating axis of the roller, and the control device comprises:
a driving parameter value obtaining unit for obtaining an upper swing driving parameter value and a lower swing driving parameter value required for driving the drum to swing upward and downward to reach a detection time;
the material quantity determining unit is used for determining the material quantity in the roller according to the upper swing driving parameter value and the lower swing driving parameter value;
and the feeding and discharging control unit is used for controlling the feeding flow and/or the discharging flow of the roller according to the material quantity.
8. The control device according to claim 7, wherein the material amount determining unit is configured to compare the values of the upper swing driving parameter and the lower swing driving parameter, and if a difference obtained by subtracting the lower swing driving parameter from the upper swing driving parameter is greater than a first absolute driving parameter difference, determine that the material amount in the drum at the time is greater than a set standard material amount; if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, determining that the material amount in the roller at the moment is smaller than a set standard material amount; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is less than or equal to a third absolute driving parameter difference, determining that the material amount in the roller at the moment is within the range of the set standard material amount.
9. The control device according to claim 8, wherein the feeding and discharging control unit is configured to control the feeding flow rate of the drum to decrease and/or the discharging flow rate of the drum to increase if the amount of the material in the drum is greater than the standard amount of the material, control the feeding flow rate of the drum to increase and/or the discharging flow rate of the drum to decrease if the amount of the material in the drum is less than the standard amount of the material, and control the feeding flow rate and/or the discharging flow rate of the drum to be unchanged if the amount of the material in the drum is within the range of the standard amount of the material.
10. The control device of claim 7, wherein the up-swing drive parameter value and the down-swing drive parameter value are both drive current values or drive pressure values.
11. The control device according to any one of claims 7 to 10, wherein the detection time of the eccentric oscillating type rotary kiln is to obtain a driving parameter value required for the oscillation of the drum when the drum oscillates to a set angle between a horizontal plane and a plane on which the axis of the drum and the oscillation axis are located.
12. A control arrangement according to claim 16, characterised in that the set angle is-30 ° to 60 °.
13. An eccentric swing type rotary furnace comprises a roller, a driving device and a transmission device, wherein a power output shaft of the driving device is in transmission connection with the roller through the transmission device; the swing axis of cylinder with the axis of cylinder does not coincide, be provided with the balancing weight on the cylinder, the balancing weight with the cylinder is relative swing axis symmetry sets up, its characterized in that still includes:
the driving sensor is connected with the driving device and used for detecting a driving parameter value of the driving device; a position sensor for detecting whether the drum moves to a detection time;
and the control device is connected with the driving device, the driving sensor and the position sensor and is used for acquiring an upper swing driving parameter value and a lower swing driving parameter value of the driving device, which are detected by the driving sensor when the position sensor detects that the roller moves to a detection time and the roller swings upwards and downwards to the detection time, comparing the upper swing driving parameter value with the lower swing driving parameter value, determining the material amount in the roller according to the size relationship between the upper swing driving parameter value and the lower swing driving parameter value, and controlling the feeding flow and/or the discharging flow of the roller according to the material amount.
14. The eccentric oscillating rotary kiln of claim 13, wherein the drive means is a motor, the drive sensor is a current sensor, and the upper and lower oscillating drive parameters are drive current values;
or the driving device is a hydraulic motor, the driving sensor is a pressure sensor, and the upper swing driving parameter value and the lower swing driving parameter value are driving pressure values.
15. The eccentric oscillating type rotary furnace of claim 13, wherein the position sensor is provided on the eccentric oscillating type rotary furnace at a position such that the control means obtains a value of the driving parameter detected by the driving sensor when the drum oscillates to a position where an angle between a plane where the axis of the drum and the oscillation axis are located and a horizontal plane reaches a set angle.
16. The eccentric oscillating rotary kiln of claim 13, wherein the control means compares the magnitude of the upper oscillating drive parameter value and the lower oscillating drive parameter value,
if the difference obtained by subtracting the lower swing driving parameter value from the upper swing driving parameter value is larger than the first insulation driving parameter difference, controlling the feeding flow of the roller to be reduced and/or controlling the discharging flow of the roller to be increased; if the difference obtained by subtracting the upper swing driving parameter value from the lower swing driving parameter value is larger than a second absolute driving parameter difference, controlling the feeding flow of the roller to increase and/or controlling the discharging flow of the roller to decrease; and if the absolute value of the difference between the upper swing driving parameter value and the lower swing driving parameter value is smaller than a third absolute driving parameter difference value, controlling the feeding flow and/or the discharging flow of the roller to be unchanged.
17. The eccentric oscillating rotary kiln of claim 16, wherein the set angle is-30 ° to 60 °.
18. The eccentric oscillating type rotary furnace of any one of claims 13 to 17, wherein the transmission device comprises a gear ring and a gear, the gear ring is arranged on the outer wall of the roller, the axis of the gear ring is the oscillating axis of the eccentric oscillating type rotary furnace, and the power output shaft of the driving device is in transmission connection with the gear ring through the gear;
or the transmission device comprises a supporting ring and a supporting wheel, the supporting ring is arranged on the outer wall of the roller, the axis of the supporting ring is the swinging axis of the eccentric swinging type rotary furnace, and a power output shaft of the driving device is in transmission connection with the supporting ring through the supporting wheel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460984A (en) * | 2020-11-26 | 2021-03-09 | 广州普德机电设备有限公司 | Rotary rotary furnace and eccentric swing type rotary furnace |
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