CN111250194A - Rice huller rubber roll constant line speed difference adjusting device and method and rice huller - Google Patents
Rice huller rubber roll constant line speed difference adjusting device and method and rice huller Download PDFInfo
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- CN111250194A CN111250194A CN202010086852.2A CN202010086852A CN111250194A CN 111250194 A CN111250194 A CN 111250194A CN 202010086852 A CN202010086852 A CN 202010086852A CN 111250194 A CN111250194 A CN 111250194A
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- rubber roller
- rubber
- roller
- rice huller
- speed difference
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
- B02B3/04—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming by means of rollers
- B02B3/045—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming by means of rollers cooperating rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B7/00—Auxiliary devices
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Abstract
The invention discloses a device and a method for adjusting the constant linear speed difference of a rubber roller of a rice huller and the rice huller, wherein the device comprises: the measuring device comprises a first distance measuring sensor arranged on the inner side of the shell of the rice huller on one side of the first rubber roll, and can measure the distance between the outer surface of the first rubber roll and the shell of the rice huller on one side of the first rubber roll in real time; a controller, comprising: the data receiving unit is used for receiving the data measured by the first ranging sensor; the data analysis unit is used for calculating the diameters of the first rubber roller and the second rubber roller according to the data received by the data receiving unit, calculating the rotating speeds of the first rubber roller and the second rubber roller according to the diameters of the first rubber roller and the second rubber roller, and further calculating the rotating speeds of driving motors of the first rubber roller and the second rubber roller; and the data output unit is used for transmitting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller calculated by the data analysis unit to the driving motors of the first rubber roller and the second rubber roller and controlling the driving motors of the first rubber roller and the second rubber roller to rotate.
Description
Technical Field
The invention belongs to the technical field of rice hullers, and particularly relates to a device and a method for adjusting constant linear speed difference of rubber rollers of a rice huller and the rice huller.
Background
The principle of hulling with rubber roller huller is that under the action of a certain pressure, a pair of opposite running unequal-speed rubber rollers can extrude and rub the rice husk passing through the pair of rubber rollers, so that the hulling purpose is achieved.
In order to reduce the crushing of the grains (reduce the increase of the crushing), the linear speed difference between the rubber rollers needs to be ensured under proper pressure. However, due to the large surface friction coefficient of the grain shell, the rubber roller is worn, the fast roller with fast rotating speed is worn fast (the time for reducing the diameter is short), and the slow roller is worn slowly (the time for reducing the diameter is long). When the diameter of the fast roller is reduced through abrasion, if the rotating speeds of the two rubber rollers are unchanged, the linear speed difference of the fast roller and the slow roller is reduced, so that the rice husking rate is reduced. At this time, only the pressure between the rollers can be increased to ensure the rice hulling rate, but the crushing of the grains is increased rapidly after the pressure between the fast roller and the slow roller is increased, and in order to ensure the line speed difference, the fast roller and the slow roller are exchanged after the rubber roller works for a certain time. Present rice huller adopts two kinds of modes: one is that the fast rollers with relatively more reduced diameters and the slow rollers with relatively less reduced diameters are completely disassembled manually, and the positions are exchanged; the other is to change the rotating speed of the two rubber rollers to realize the switching of the fast and slow rollers by replacing transmission equipment or adjusting the frequency of two independent motors. Theoretically, the normal linear speed difference of the rubber roller of the rice huller is 2.5-4.0 m/s, the linear speed is closed to be about 30m/s, the interval is reasonable, the reasonability of the rubbing and tearing length can be guaranteed in the interval, the hulling rate is high, the breakage is minimum, and a user can determine the optimal linear speed difference and the optimal linear speed sum of the rubber roller according to the grain condition. The switching of the fast and slow rollers can only ensure that the diameters of the fast and slow rollers are basically the same, and the linear speed difference of the fast and slow rollers is not automatically adjusted along with the reduction of the roller diameter, so that the linear speed difference of the two rubber rollers of the conventional rice huller has large fluctuation, and under the condition of certain pressure, the hulling rate and the crushing rate of grains are constantly changed and are difficult to keep stable.
Disclosure of Invention
The invention aims to provide a device and a method for adjusting the constant linear speed difference of rubber rollers of a rice huller and the rice huller, aiming at the defects in the prior art.
In order to achieve the above object, the present invention provides a rice huller rubber roll constant linear speed difference adjusting device, comprising:
the measuring device comprises a first distance measuring sensor arranged on the inner side of the shell of the rice huller on one side of the first rubber roll, and can measure the distance between the outer surface of the first rubber roll and the shell of the rice huller on one side of the first rubber roll in real time;
a controller, comprising:
the data receiving unit is used for receiving the data measured by the first ranging sensor;
the data analysis unit is used for calculating the diameters of the first rubber roller and the second rubber roller according to the data received by the data receiving unit, calculating the rotating speeds of the first rubber roller and the second rubber roller according to the diameters of the first rubber roller and the second rubber roller, and further calculating the rotating speeds of driving motors of the first rubber roller and the second rubber roller;
and the data output unit is used for transmitting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller calculated by the data analysis unit to the driving motors of the first rubber roller and the second rubber roller and controlling the driving motors of the first rubber roller and the second rubber roller to rotate.
Optionally, the measuring device further comprises a second distance measuring sensor arranged at one end of the rotating shaft of the first rubber roller or the second rubber roller, and the shaft center distance between the first rubber roller and the second rubber roller can be measured in real time.
Optionally, the measuring device further comprises a third distance measuring sensor arranged at the telescopic end of the cylinder, and the stroke of the telescopic end of the cylinder can be measured in real time.
The present invention also provides a rice huller, comprising:
a rice huller body;
the rice huller rubber roll constant linear speed difference adjusting device.
Optionally, the rice huller body includes:
the first rubber roller rotates at a fixed position of the rice huller frame;
the second rubber roller is arranged on one side of the first rubber roller;
the air cylinder is arranged on the upper side of the first rubber roller, the telescopic end of the air cylinder is connected with the second rubber roller, and the air cylinder is connected with a pneumatic proportional valve and used for enabling the telescopic end of the air cylinder to always drive the second rubber roller to be close to the first rubber roller so as to enable a certain pressure to be kept between the second rubber roller and the first rubber roller;
the rubber roller switching device can realize the automatic switching of the first rubber roller and the second rubber roller which are respectively used as a high-speed roller and a low-speed roller.
The invention also provides a rice huller rubber roll constant linear speed difference adjusting method, which comprises the following steps:
measuring the diameters of a first rubber roller and a second rubber roller in real time;
step two, determining the linear speed difference and the linear speed sum of the first rubber roller and the second rubber roller, and calculating the real-time rotating speed of the first rubber roller and the second rubber roller by using the linear speed difference value, the linear speed sum value and the diameter values of the first rubber roller and the second rubber roller measured in the step one;
and step three, adjusting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller in real time according to the real-time rotating speeds of the first rubber roller and the second rubber roller calculated in the step two.
Optionally, in the second step, when the first rubber roller and the second rubber roller are respectively driven by the first driving motor and the second driving motor to rotate, the rotation speeds of the first rubber roller and the second rubber roller are calculated by the following formulas:
n1＝30(Vc+Vh)/πD，
n2＝30(Vh-Vc)/πD，
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, VhThe linear velocity sum of the first rubber roller and the second rubber roller is shown, and D is the diameter of the first rubber roller and the second rubber roller.
Optionally, in the second step, when the first rubber roller and the second rubber roller are driven by the same driving motor through the motor driving wheel to rotate, the rotation speeds of the first rubber roller and the second rubber roller are calculated through the following formula:
n1＝60Vc/πD(1-d1/d2),
n2＝60Vcd1/πD(d2-d1),
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, D is the diameter of the first rubber roller and the second rubber roller, D1The diameter of the first rubber roll driving wheel, d2The diameter of the second rubber roller driving wheel.
The invention provides a device and a method for adjusting the constant linear speed difference of a rubber roller of a rice huller and the rice huller, and has the advantages that: the rice huller is provided with the measuring device, the diameters of the first rubber roller and the second rubber roller of the rice huller can be measured in real time, the rotating speeds of the first rubber roller and the second rubber roller are adjusted in real time according to the diameter changes of the first rubber roller and the second rubber roller, the linear speed difference of the first rubber roller and the second rubber roller can be constant, the using effect of the rice huller is improved, the hulling rate of grains can be improved, and the crushing rate of the grains can be reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic structural diagram of a rice huller rubber roll constant linear speed difference adjusting device according to an embodiment of the present invention.
Description of reference numerals:
1. a first rubber roller; 2. a rice huller shell; 3. a first ranging sensor; 4. a second rubber roller; 5. a second ranging sensor; 6. a cylinder; 7. a third ranging sensor; 8. pneumatic proportional valve.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a rice huller rubber roll constant line speed difference adjusting device, comprising:
the measuring device comprises a first distance measuring sensor arranged on the inner side of the shell of the rice huller on one side of the first rubber roll, and can measure the distance between the outer surface of the first rubber roll and the shell of the rice huller on one side of the first rubber roll in real time;
a controller, comprising:
the data receiving unit is used for receiving the data measured by the first ranging sensor;
the data analysis unit is used for calculating the diameters of the first rubber roller and the second rubber roller according to the data received by the data receiving unit, calculating the rotating speeds of the first rubber roller and the second rubber roller according to the diameters of the first rubber roller and the second rubber roller, and further calculating the rotating speeds of driving motors of the first rubber roller and the second rubber roller;
and the data output unit is used for transmitting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller calculated by the data analysis unit to the driving motors of the first rubber roller and the second rubber roller and controlling the driving motors of the first rubber roller and the second rubber roller to rotate.
Specifically, the measuring device measures the distance between the outer surface of the first rubber roll and the shell of the rice huller on one side of the first rubber roll in real time, the initial distance is the distance between the outer surface of the first rubber roll and the shell when the first rubber roll is not worn, after the first rubber roll is worn, the distance between the surface of the first rubber roll and the shell is increased, the initial distance value subtracted from the increased distance value is the wear loss, the wear loss is multiplied by 2, and the initial diameter value of the first rubber roll is the real-time diameter value of the first rubber roll, and the initial diameter of the rubber roll is known, so that the real-time diameter of the first rubber roll can be obtained; the first rubber roller and the second rubber roller are switched to be used as a fast roller and a slow roller at proper time, so that the abrasion loss of the first rubber roller and the abrasion loss of the second rubber roller are equal, and the diameter of the second rubber roller is the same as that of the first rubber roller; the pressure between the first rubber roller and the second rubber roller of the rice huller is constant all the time, when the wear diameters of the first rubber roller and the second rubber roller are reduced, the second rubber roller moves towards the first rubber roller, the pressure between the rubber rollers is kept, the diameters of the first rubber roller and the second rubber roller are reduced, the linear speed difference between the first rubber roller and the second rubber roller is unstable, the linear speed difference between the first rubber roller and the second rubber roller and the rotation speed of the first rubber roller and the second rubber roller which are not changed and the speed limit can be calculated in real time through the data analysis unit according to the diameters of the first rubber roller and the second rubber roller, then the rotation speed is conveyed to the driving motors of the first rubber roller and the second rubber roller in real time through the data output unit, the linear speed difference between the first rubber roller and the second rubber roller is adjusted in real time through controlling the rotation speed of the driving motors, the linear speed difference is kept constant, the hulling rate of.
Optionally, the measuring device further comprises a second distance measuring sensor arranged at one end of the rotating shaft of the first rubber roller or the second rubber roller, and the shaft center distance between the first rubber roller and the second rubber roller can be measured in real time.
Specifically, the measuring device can also measure the axial center distance between the first rubber roller and the second rubber roller in real time by using a second distance measuring sensor, because the first rubber roller and the second rubber roller are switched to be a fast roller and a slow roller in time, the abrasion loss of the first rubber roller and the second rubber roller can be considered to be equal, the diameter of the second rubber roller is the same as that of the first rubber roller, and the center distance value is the sum of the radius of the first rubber roller and the radius of the second rubber roller, namely the diameter value of the first rubber roller and the diameter value of the second rubber roller.
Optionally, the measuring device further comprises a third distance measuring sensor arranged at the telescopic end of the cylinder, and the stroke of the telescopic end of the cylinder can be measured in real time.
Specifically, the measuring device can also use a third sensor to measure the stroke of the telescopic end of the cylinder in real time, and as the pressure between the first rubber roller and the second rubber roller of the rice huller is constant all the time, when the wear diameters of the first rubber roller and the second rubber roller are reduced, the cylinder drives the second rubber roller to move towards the first rubber roller, so that the pressure between the rubber rollers is maintained, and the moving distance is the stroke of the telescopic end of the cylinder; because the first rubber roller and the second rubber roller are switched to be the fast roller and the slow roller in due time, the abrasion loss of the first rubber roller and the second rubber roller can be considered to be equal, and therefore, the stroke value obtained by subtracting one half of the stroke value from the initial diameter value of the first rubber roller and the initial diameter value of the second rubber roller is the actual diameter value of the first rubber roller and the second rubber roller.
The present invention also provides a rice huller, comprising:
a rice huller body;
the rice huller rubber roll constant linear speed difference adjusting device.
Optionally, the rice huller body includes:
the first rubber roller rotates at a fixed position of the rice huller frame;
the second rubber roller is arranged on one side of the first rubber roller;
the air cylinder is arranged on the upper side of the first rubber roller, the telescopic end of the air cylinder is connected with the second rubber roller, and the air cylinder is connected with a pneumatic proportional valve and used for enabling the telescopic end of the air cylinder to always drive the second rubber roller to be close to the first rubber roller so as to enable a certain pressure to be kept between the second rubber roller and the first rubber roller;
the rubber roller switching device can realize the automatic switching of the first rubber roller and the second rubber roller which are respectively used as a high-speed roller and a low-speed roller.
Specifically, the rice huller drives the second rubber roller to move through the pneumatic proportional valve to control the air cylinder so that constant pressure is always kept between the second rubber roller and the first rubber roller, if the first rubber roller and the second rubber roller are worn and the diameter of the first rubber roller and the second rubber roller is reduced, the pressure value between the first rubber roller and the second rubber roller is reduced, the pneumatic proportional valve can control the telescopic end of the air cylinder to move, and the air cylinder drives the second pressing roller to apply constant pressure to the first pressing roller all the time so that the hulling effect is ensured; the rubber roll switching device can control the rotating speeds of driving motors of the first pressing roll and the second pressing roll through a driving motor frequency converter, so that the first pressing roll and the second pressing roll can be alternately used as a fast roll and a slow roll, the abrasion loss of the first pressing roll and the abrasion loss of the second pressing roll are the same, and the diameters of the first rubber roll and the second rubber roll are equal.
The invention also provides a rice huller rubber roll constant linear speed difference adjusting method, which comprises the following steps:
measuring the diameters of a first rubber roller and a second rubber roller in real time;
step two, determining the linear speed difference and the linear speed sum of the first rubber roller and the second rubber roller, and calculating the real-time rotating speed of the first rubber roller and the second rubber roller by using the linear speed difference value, the linear speed sum value and the diameter values of the first rubber roller and the second rubber roller measured in the step one;
and step three, adjusting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller in real time according to the real-time rotating speeds of the first rubber roller and the second rubber roller calculated in the step two.
Optionally, in the second step, when the first rubber roller and the second rubber roller are respectively driven by the first driving motor and the second driving motor to rotate, the rotation speeds of the first rubber roller and the second rubber roller are calculated by the following formulas:
n1＝30(Vc+Vh)/πD，
n2＝30(Vh-Vc)/πD，
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, VhThe linear velocity sum of the first rubber roller and the second rubber roller is shown, and D is the diameter of the first rubber roller and the second rubber roller.
Specifically, because the first rubber roller and the second rubber roller are switched to be the fast roller and the slow roller in due time, the abrasion loss of the first rubber roller and the second rubber roller can be considered to be equal; when the first rubber roller and the second rubber roller are driven to rotate by the first driving motor and the second driving motor respectively, the rotation speed of the first rubber roller and the rotation speed of the second rubber roller which can ensure the linear speed difference between the first rubber roller and the second rubber roller can be kept constant by controlling the rotation speed of the first driving motor and the rotation speed of the second driving motor as long as the rotation speeds of the first rubber roller and the second rubber roller which can ensure the linear speed difference between the first rubber roller and the second rubber roller are calculated according to the diameters of the first rubber roller and the second rubber roller; the roll diameter linear speed of the first rubber roll is as follows: v1＝(n1/60)×πD1The roll diameter linear velocity of the second rubber roll is as follows: v2＝(n2/60)×πD2The linear speed difference of the first rubber roller and the second rubber roller is as follows: vc＝V1-V2The sum of the linear speeds of the first rubber roller and the second rubber roller is as follows: vh＝V1+V2Wherein D is1Is the diameter of the first rubber roller, D2The diameter of the second rubber roller is equal to the diameter of the second rubber roller and is equal to the diameter of the second rubber roller, and the following equation can be obtained by solving the equation set: n is1＝30(Vc+Vh)/πD，n2＝30(Vh-Vc)/πD。
Optionally, in the second step, when the first rubber roller and the second rubber roller are driven by the same driving motor through the motor driving wheel to rotate, the rotation speeds of the first rubber roller and the second rubber roller are calculated through the following formula:
n1＝60Vc/πD(1-d1/d2),
n2＝60Vcd1/πD(d2-d1),
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, D is the diameter of the first rubber roller and the second rubber roller, D1The diameter of the first rubber roll driving wheel, d2The diameter of the second rubber roller driving wheel.
Specifically, because the first rubber roller and the second rubber roller are switched to be the fast roller and the slow roller in due time, the abrasion loss of the first rubber roller and the second rubber roller can be considered to be equal; when the first rubber roller and the second rubber roller are driven by the same driving motor through the motor driving wheel to rotate, the rotating speeds of the first rubber roller and the second rubber roller which can ensure the linear speed difference between the first rubber roller and the second rubber roller are calculated according to the diameters of the first rubber roller and the second rubber roller, and the linear speed difference between the first rubber roller and the second rubber roller can be kept constant by controlling the rotating speeds of the first driving motor and the second driving motor; n is1d1＝n2d2＝n0d0Wherein n is0To drive the rotational speed of the motor, d0To drive the diameter of the drive wheel of the motorThe linear speed difference of the first rubber roller and the second rubber roller is as follows: vc＝V1-V2＝πDn1(1-d1/d2) And/60, obtaining the following equation: n is1＝60Vc/πD(1-d1/d2)，n2＝60Vcd1/πD(d2-d1)。
Example 1
As shown in fig. 1, the present invention provides a rice huller rubber roll constant linear speed difference adjusting device, comprising:
the measuring device comprises a first distance measuring sensor 3 arranged on the inner side of the rice huller shell 2 on one side of the first rubber roll 1, and can measure the distance between the outer surface of the first rubber roll 1 and the rice huller shell 2 on one side of the first rubber roll 1 in real time;
a controller, comprising:
a data receiving unit for receiving data measured by the first ranging sensor 3;
the data analysis unit is used for calculating the diameters of the first rubber roller 1 and the second rubber roller 4 according to the data received by the data receiving unit, calculating the rotating speeds of the first rubber roller 1 and the second rubber roller 4 according to the diameters of the first rubber roller 1 and the second rubber roller 4, and further calculating the rotating speeds of the driving motors of the first rubber roller 1 and the second rubber roller 4;
and the data output unit is used for transmitting the rotating speeds of the driving motors of the first rubber roller 1 and the second rubber roller 4 calculated by the data analysis unit to the driving motors of the first rubber roller 1 and the second rubber roller 4 and controlling the driving motors of the first rubber roller 1 and the second rubber roller 4 to rotate.
In this embodiment, the measuring device further includes a second distance measuring sensor 5 disposed at one end of the rotating shaft of the first rubber roller 1 or the second rubber roller 4, and can measure the axial center distance between the first rubber roller 1 and the second rubber roller 4 in real time.
In this embodiment, the measuring device further includes a third distance measuring sensor 7 disposed on the telescopic end of the cylinder 6, and can measure the stroke of the telescopic end of the cylinder 6 in real time.
To sum up, the measuring device can measure the diameters of the first rubber roller 1 and the second rubber roller 4 in real time through three modes, the first mode is that the first distance measuring sensor 3 is used for measuring the distance between the surface of the first rubber roller 1 and the shell 2 of the rice huller, the initial diameter value of the first rubber roller 1 is known, the diameter of the first rubber roller 1 is reduced after being worn, the distance between the outer surface of the first rubber roller 1 and the shell 2 of the rice huller is increased, the wear amount is obtained by subtracting the initial distance value from the increased distance value, and the real-time diameter value of the first rubber roller 1 is obtained by multiplying the wear amount by 2 and adding the initial diameter value of the first rubber roller 1; the second mode is that a second distance measuring sensor 5 is used for measuring the shaft center distance between the first rubber roller 1 and the second rubber roller 4 in real time, and the center distance value is the sum of the radius of the first rubber roller 1 and the radius of the second rubber roller 4, namely the diameter value of the first rubber roller 1 and the diameter value of the second rubber roller 4; the third mode is to use a third sensor 7 to measure the stroke of the telescopic end of the cylinder 6 in real time, because the pressure between the first rubber roller 1 and the second rubber roller 4 of the rice huller is always constant, when the wear diameters of the first rubber roller 1 and the second rubber roller 4 are reduced, the cylinder 6 drives the second rubber roller 4 to move towards the first rubber roller 1, the pressure between the rubber rollers is kept, the moving distance is the stroke of the telescopic end of the cylinder 6, and the actual diameter values of the first rubber roller 1 and the second rubber roller 4 are obtained by subtracting one half of the stroke value from the initial diameter values of the first rubber roller 1 and the second rubber roller 4. The diameters of the first rubber roller 1 and the second rubber roller 4 can be measured in real time in all three modes, but in other embodiments, the average value can be obtained by simultaneously measuring two or three of the three modes, so that the measurement result is more accurate.
Example 2
The present invention provides a rice huller, comprising:
a rice huller body;
the rice huller rubber roll constant linear speed difference adjusting device.
In this embodiment, the rice huller body includes:
the first rubber roller 1 rotates at a fixed position of the rice huller frame;
the second rubber roller 4 is arranged on one side of the first rubber roller 1;
the air cylinder 6 is arranged on the upper side of the first rubber roller 1, the telescopic end of the air cylinder 1 is connected with the second rubber roller 4, and the air cylinder 6 is connected with a pneumatic proportional valve 8 and used for enabling the telescopic end of the air cylinder 6 to always drive the second rubber roller 4 to be close to the first rubber roller 1, so that a certain pressure is kept between the second rubber roller 4 and the first rubber roller 1;
the rubber roller switching device can realize the automatic switching of the first rubber roller 1 and the second rubber roller 4 which are respectively used as a high-speed roller and a low-speed roller.
To sum up, the first rubber roller 1 rotates at a fixed position of the rice huller, the second rubber roller 4 can move along with the expansion of the cylinder 6, and the pneumatic proportional valve 8 on the cylinder 6 can ensure that the cylinder 6 always applies a force close to the first rubber roller 1 to the second rubber roller 4, so that the pressure between the first rubber roller 1 and the second rubber roller 4 is constant, and the hulling effect of the rice huller is ensured; for the condition that the first rubber roller 1 and the second rubber roller 4 are respectively driven by the first driving motor and the second driving motor, the rubber roller switching device controls the rotating speeds of the first driving motor and the second driving motor through a frequency converter, and timely switches the first rubber roller 1 and the second rubber roller 4 to be used as a fast roller and a slow roller, so that the abrasion degrees of the first rubber roller 1 and the second rubber roller 4 are the same, and for the condition that the first rubber roller 1 and the second rubber roller 4 are driven by the same driving motor, the rubber roller switching device can realize driving wheels with different sizes through a clutch, and control the rotating speeds of the first rubber roller 1 and the second rubber roller 4 through the driving wheels with different sizes, so as to realize the switching of the fast roller and the slow roller. The rice huller of having installed the invariable linear speed difference adjusting device of rice huller rubber roll can real-timely regulation first rubber roll 1 and the rotational speed of second rubber roll 4 for even if first rubber roll 1 and second rubber roll 4 take place the wearing and tearing diameter and diminish, can guarantee the linear speed difference between first rubber roll 1 and the second rubber roll 4 invariably, guarantee the shelling rate, reduce the breakage rate.
Example 3
The invention provides a method for adjusting the constant linear speed difference of a rubber roller of a rice huller, which comprises the following steps:
step one, measuring the diameters of a first rubber roller 1 and a second rubber roller 4 in real time;
step two, determining the linear speed difference and the linear speed sum of the first rubber roller 1 and the second rubber roller 4, and calculating the real-time rotating speed of the first rubber roller 1 and the second rubber roller 4 by using the linear speed difference value, the linear speed sum value and the diameter values of the first rubber roller 1 and the second rubber roller 4 measured in the step one;
and step three, adjusting the rotating speed of the driving motors of the first rubber roller 1 and the second rubber roller 4 in real time according to the real-time rotating speeds of the first rubber roller 1 and the second rubber roller 4 calculated in the step two.
In the embodiment, in the second step, when the first rubber roller 1 and the second rubber roller 4 are respectively driven by the first driving motor and the second driving motor to rotate, the rotation speeds of the first rubber roller 1 and the second rubber roller 4 are calculated by the following formulas:
n1＝30(Vc+Vh)/πD，
n2＝30(Vh-Vc)/πD，
wherein n is1Is the rotational speed of the first rubber roller 1, n2The rotation speed, V, of the second rubber roller 4cIs the linear speed difference of the first rubber roller 1 and the second rubber roller 4, VhIs the linear velocity sum of the first rubber roller 1 and the second rubber roller 4, and D is the diameter of the first rubber roller 1 and the second rubber roller 4.
In this embodiment, in the second step, when the first rubber roller 1 and the second rubber roller 4 are driven by the same driving motor through the motor driving wheel to rotate, the rotation speeds of the first rubber roller 1 and the second rubber roller 4 are calculated through the following formula:
n1＝60Vc/πD(1-d1/d2),
n2＝60Vcd1/πD(d2-d1),
wherein n is1Is the rotational speed of the first rubber roller 1, n2The rotation speed, V, of the second rubber roller 4cIs the linear speed difference of the first rubber roller 1 and the second rubber roller 4, D is the diameter of the first rubber roller 1 and the second rubber roller 4, D1The diameter of the first rubber roll driving wheel, d2The diameter of the second rubber roller driving wheel.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (8)
1. The utility model provides a rice huller rubber roll constant line speed difference adjusting device which characterized in that includes:
the measuring device comprises a first distance measuring sensor arranged on the inner side of the shell of the rice huller on one side of the first rubber roll, and can measure the distance between the outer surface of the first rubber roll and the shell of the rice huller on one side of the first rubber roll in real time;
a controller, comprising:
the data receiving unit is used for receiving the data measured by the first ranging sensor;
the data analysis unit is used for calculating the diameters of the first rubber roller and the second rubber roller according to the data received by the data receiving unit, calculating the rotating speeds of the first rubber roller and the second rubber roller according to the diameters of the first rubber roller and the second rubber roller, and further calculating the rotating speeds of driving motors of the first rubber roller and the second rubber roller;
and the data output unit is used for transmitting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller calculated by the data analysis unit to the driving motors of the first rubber roller and the second rubber roller and controlling the driving motors of the first rubber roller and the second rubber roller to rotate.
2. The device for adjusting the constant linear speed difference of the rubber rollers of the rice huller as claimed in claim 1, wherein the measuring device further comprises a second distance measuring sensor arranged at one end of the rotating shaft of the first rubber roller or the second rubber roller, and the device can measure the center distance between the first rubber roller and the second rubber roller in real time.
3. The rubber roll constant linear speed difference adjusting device for the rice huller as claimed in claim 1, wherein the measuring device further comprises a third distance measuring sensor arranged on the telescopic end of the cylinder, and the stroke of the telescopic end of the cylinder can be measured in real time.
4. A rice huller, comprising:
a rice huller body;
the rice huller rubber roller constant linear speed difference adjusting device of any one of claims 1 to 3.
5. The rice huller of claim 4, wherein the rice huller body comprises:
the first rubber roller rotates at a fixed position of the rice huller frame;
the second rubber roller is arranged on one side of the first rubber roller;
the air cylinder is arranged on the upper side of the first rubber roller, the telescopic end of the air cylinder is connected with the second rubber roller, and the air cylinder is connected with a pneumatic proportional valve and used for enabling the telescopic end of the air cylinder to always drive the second rubber roller to be close to the first rubber roller so as to enable a certain pressure to be kept between the second rubber roller and the first rubber roller;
the rubber roller switching device can realize the automatic switching of the first rubber roller and the second rubber roller which are respectively used as a high-speed roller and a low-speed roller.
6. The method for adjusting the constant linear speed difference of the rubber roller of the rice huller is characterized by comprising the following steps of:
measuring the diameters of a first rubber roller and a second rubber roller in real time;
step two, determining the linear speed difference and the linear speed sum of the first rubber roller and the second rubber roller, and calculating the real-time rotating speed of the first rubber roller and the second rubber roller by using the linear speed difference value, the linear speed sum value and the diameter values of the first rubber roller and the second rubber roller measured in the step one;
and step three, adjusting the rotating speeds of the driving motors of the first rubber roller and the second rubber roller in real time according to the real-time rotating speeds of the first rubber roller and the second rubber roller calculated in the step two.
7. The method for adjusting the constant linear speed difference of the rubber rollers of the rice huller as claimed in claim 6, wherein in the second step, when the first rubber roller and the second rubber roller are respectively driven by the first driving motor and the second driving motor to rotate, the rotating speeds of the first rubber roller and the second rubber roller are calculated by the following formulas:
n1＝30(Vc+Vh)/πD，
n2＝30(Vh-Vc)/πD，
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, VhThe linear velocity sum of the first rubber roller and the second rubber roller is shown, and D is the diameter of the first rubber roller and the second rubber roller.
8. The method for adjusting the constant linear speed difference of the rubber rollers of the rice huller as claimed in claim 6, wherein in the second step, when the first rubber roller and the second rubber roller are driven by the same driving motor through the motor driving wheel to drive the first rubber roller driving wheel and the second rubber roller driving wheel to rotate, the rotating speeds of the first rubber roller and the second rubber roller are calculated by the following formula:
n1＝60Vc/πD(1-d1/d2),
n2＝60Vcd1/πD(d2-d1),
wherein n is1The rotation speed of the first rubber roller, n2The rotation speed of the second rubber roller, VcIs the linear speed difference of the first rubber roller and the second rubber roller, D is the diameter of the first rubber roller and the second rubber roller, D1The diameter of the first rubber roll driving wheel, d2The diameter of the second rubber roller driving wheel.
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| CN202010086852.2A CN111250194A (en) | 2020-02-11 | 2020-02-11 | Rice huller rubber roll constant line speed difference adjusting device and method and rice huller |
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| CN202010086852.2A CN111250194A (en) | 2020-02-11 | 2020-02-11 | Rice huller rubber roll constant line speed difference adjusting device and method and rice huller |
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Cited By (1)
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| CN114534829A (en) * | 2021-12-31 | 2022-05-27 | 长沙万华机器有限公司 | Intelligent control method and system of rice huller and rice huller |
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