CN115245854B - Roller press control method based on fuzzy control and roller press with low cost and high efficiency - Google Patents
Roller press control method based on fuzzy control and roller press with low cost and high efficiency Download PDFInfo
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- CN115245854B CN115245854B CN202210720103.XA CN202210720103A CN115245854B CN 115245854 B CN115245854 B CN 115245854B CN 202210720103 A CN202210720103 A CN 202210720103A CN 115245854 B CN115245854 B CN 115245854B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Press Drives And Press Lines (AREA)
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Abstract
The invention discloses a roll squeezer control method based on fuzzy control and a roll squeezer with low cost and high efficiency, wherein the method comprises the following steps: s1, acquiring state data in the running process of a roller press and blurring; s2, establishing a fuzzy control rule according to assignment of fuzzy variables; s3, constructing a membership function according to the fuzzy variable; s4, fitting the membership function to generate an excitation function, and normalizing the excitation function to obtain a convergence value; s5, establishing a self-adaptive fuzzy model based on fuzzy rules; s6, acquiring real-time running data of the roller press, and outputting fuzzy quantity according to the self-adaptive fuzzy model; s7, performing defuzzification processing on the output fuzzy result by using a gravity center method; and S8, adjusting the running state of the roller press according to the deblurring result. By constructing a self-adaptive fuzzy control method, a multi-input and multi-output fuzzy control system is formed, so that the running state of the roller press can be adjusted in real time according to working conditions, and the load of the roller press is balanced.
Description
Technical Field
The invention relates to the technical field of roller press equipment, in particular to a roller press control method based on fuzzy control and a roller press with low cost and high efficiency.
Background
The roll squeezer, also known as a calender, a pair of rollers, a rolling mill, an extrusion mill and a rolling mill is novel cement energy-saving grinding equipment developed in the middle of the 80 s, has the functions of replacing a ball mill pre-grinding system with high energy consumption and low efficiency, reducing steel consumption and noise, is suitable for new factory construction, can also be used for technical transformation of old factories, improves the output of the ball mill system by 30-50%, ensures that 0.08mm fine materials in extruded material cakes occupy 20-35%, and is less than 2mm and 65-85%, and the internal structure of small particles is filled with a plurality of micro cracks due to extrusion, so that the grindability is greatly improved. The roller press consists of two extrusion rollers which rotate synchronously in opposite directions, materials are fed from the upper parts of the two rollers and are continuously brought between the rollers by the extrusion rollers, and the materials are crushed under the action of high pressure.
In the prior art, the roll surface of the extrusion roll and the roll body are integrated, the roll body and the roll surface are required to be integrally forged during manufacturing, and then the orderly arranged convex blocks are welded on the roll surface manually in a hot overlaying mode, so that the production difficulty is high, and the construction period and the price cost are extremely high. However, after the roll squeezer is used for a long time, the roll surface and the convex blocks are worn, the squeeze rolls are required to be replaced when the wear is serious, the materials entering from the feed inlet of the roll squeezer are difficult to uniformly distribute between the two rolls, more materials can be accumulated in the middle part of the squeeze rolls, the roll squeezer is caused to work for a period of time, the middle part of the squeeze rolls are severely worn, and only slight wear exists at the two ends.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a roller press control method based on fuzzy control and a roller press with low cost and high efficiency, so as to overcome the technical problems in the prior art.
For this purpose, the invention adopts the following specific technical scheme:
according to an aspect of the present invention, there is provided a roll squeezer control method based on fuzzy control, the method comprising the steps of:
s1, acquiring state data in the running process of a roller press and blurring, wherein the state data comprise running current I, running power P, material extrusion rate V, fine material content R in a material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press;
s2, establishing a fuzzy control rule according to assignment of fuzzy variables, wherein the fuzzy control rule comprises the following steps:
s21, establishing a fuzzy control rule base which adopts an IF-THEN rule;
s22, establishing nodes under the rule base;
s23, a child node is built under the node, wherein the child node is a variable of the running of the roller press.
S24, configuring a parameter table for the child node;
s25, defining a triangle membership function for parameters needing blurring processing, wherein the expression is as follows:
wherein x is an input variable, parameters a and c respectively correspond to coordinates of left and right vertexes of the lower part of the triangle, and parameter b is a height coordinate of the vertex of the triangle;
s3, constructing a Gaussian membership function according to the fuzzy variable;
s4, fitting the Gaussian membership function to generate an excitation function, and normalizing the excitation function to obtain a convergence value;
s5, establishing a self-adaptive fuzzy model based on a fuzzy rule, wherein the self-adaptive fuzzy model comprises the following steps:
s51, realizing a fuzzy rule front part according to the convergence value of the excitation function, wherein fuzzy output values of different nodes correspondingly output different fuzzy inference rules;
s52, adjusting fuzzy reasoning rule parameters and membership function parameters by using a least square method and a back propagation algorithm, and completing a fuzzy rule back part to obtain a self-adaptive neural fuzzy system;
s6, acquiring real-time running data I of the roller press n ,P n ,V n ,R n ,ΔI n ,ΔP n Outputting a fuzzy quantity set u according to the adaptive fuzzy model c (x)；
S7, performing deblurring treatment on the output fuzzy result by using a gravity center method, wherein the specific function of the gravity center method is as follows,
wherein x is an input variable, a and b are respectively the upper limit value and the lower limit value of the value range of x, u c (x) A fuzzy quantity set is output;
s8, according to the deblurring result dfg (x) The running state of the roller press, namely the running current I, the running power P, the material extrusion rate V, the fine material content R in the material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press are regulated, so that the roller press is in the optimal running state.
According to another aspect of the invention, there is also provided a low-cost high-efficiency roller press based on fuzzy control, comprising a roller press main body, a material homogenizing mechanism, squeeze rollers and a driving assembly, wherein the roller press main body comprises a feed hopper, a roller press case and an equipment case, the material homogenizing mechanism and the squeeze rollers are sequentially arranged in the roller press case from top to bottom, the driving assembly is arranged in the equipment case and is used for simultaneously driving the material homogenizing mechanism and the two squeeze rollers, the material entering the roller press case from the feed hopper uniformly falls between the two squeeze rollers through rotation of the material homogenizing mechanism, and the two squeeze rollers synchronously rotate in opposite directions to grind the material; the squeeze roll comprises a roll surface, a roll body, a roll shaft and screws, wherein the roll body is detachably assembled on the roll shaft, the roll surface comprises an end roll surface and a middle roll surface, the end roll surface and the middle roll surface are semicircular, and the end roll surface and the middle roll surface are detachably assembled at the middle part and the end part of the roll body through the screws respectively.
Further, the roll shaft comprises a special-shaped shaft, a second rotating shaft, a fixed mounting piece and a movable mounting piece, one end of the special-shaped shaft is fixedly connected with the second rotating shaft, the fixed mounting piece is fixedly assembled at the joint of the special-shaped shaft and the second rotating shaft, the two second rotating shafts are driven by a driving assembly to rotate synchronously in opposite directions, and the roll body is sleeved on the special-shaped shaft through a radial special-shaped hole; the fixed mounting piece and the movable mounting piece both comprise a connecting shaft and a mounting plate, the surface of the mounting plate of the movable mounting piece is provided with a special-shaped groove, and the movable mounting piece is sleeved at the other end of the special-shaped shaft through the special-shaped groove; the profiles of the special-shaped holes and the special-shaped grooves are respectively matched with the profile of the special-shaped shaft.
Further, the rolling machine case comprises a cylindrical material homogenizing cavity, a grinding cavity and a supporting side plate, wherein the inner wall surface of the material homogenizing cavity is just contacted with the end part of the partition plate, a first discharging opening is formed at the joint of the material homogenizing cavity and the feeding hopper, a second discharging opening is formed at the joint of the material homogenizing cavity and the grinding cavity, and the opening sizes of the first discharging opening and the second discharging opening are consistent with the opening size of the material homogenizing area; the support side plates are arranged at two ends of the grinding cavity, two mounting holes are respectively formed in the surfaces of the support side plates, and the connecting shafts are respectively mounted on the mounting holes through bearings.
Further, the driving assembly comprises a power source and a first gear, two first gears meshed with each other are fixedly sleeved on the surfaces of the two second rotating shafts respectively, and the power source is connected with one of the second rotating shafts; a transmission shaft is assembled on the outer wall of one side of the rolling machine case, which is close to the equipment case, a second gear and a third gear are fixedly sleeved on the surface of the transmission shaft, a fourth gear is fixedly sleeved on the surface of the first rotation shaft, the second gear is meshed with one of the first gears, and the third gear is meshed with the fourth gear; the third gear comprises a gear main body and interval gear teeth, the interval gear teeth are uniformly distributed on the surface of the gear main body, and the rotatable angle size of the interval gear teeth is consistent with the angle size of the opening of the refining area when the interval gear teeth are meshed with the fourth gear.
Further, the screw comprises a first screw and a second screw, a first screw hole seat is arranged on one side of the roller surface of the end part, mounting grooves are respectively formed in two ends of the roller body, a first screw thread groove and a screw hole are formed in the surface of the roller body, the mounting plates are respectively arranged in the mounting grooves, second screw thread grooves are uniformly formed in the side parts of the mounting plates, and the first screw hole seat, the screw hole and the second screw thread groove which are corresponding in position are respectively fixedly assembled through the first screw; the other side of the end roller surface is provided with a second screw hole seat, two sides of the middle roller surface are respectively provided with a third screw hole seat, the second screw hole seat and the first screw groove which are corresponding in position are respectively fixedly assembled through second screws, and the second screw hole seat and the third screw hole seat are distributed in a staggered manner; the roller surface also comprises a connecting roller surface which is detachably assembled at the outer side of the joint part of the second screw hole seat and the third screw hole seat; the joining roller surface comprises a first joining roller surface and a second joining roller surface, the first joining roller surface and the second joining roller surface are combined to form a complete circular ring and are assembled at the joint of the end roller surface and the middle roller surface in a thermal expansion and cold contraction mode, and the first joining roller surface, the second joining roller surface, the end roller surface and the middle roller surface are further fastened through a clamping groove and clamping block structure.
The beneficial effects of the invention are as follows:
1. by constructing the self-adaptive fuzzy control method, circuit data and material information of material extrusion during the running of the roller press can be introduced to form a multi-input-output fuzzy control system, so that the running state of the roller press can be adjusted in real time according to working conditions, the load of the roller press is balanced, the roller press is ensured to be in an optimal running state, and the purposes of high efficiency and energy saving are achieved.
2. Through set gradually refining mechanism and squeeze roll from top to bottom in roll-in quick-witted incasement, drive refining mechanism and two squeeze rolls simultaneously through drive assembly, rotatory messenger entering the material of roll-in quick-witted incasement portion through the feeder hopper through the refining mechanism evenly falls between two squeeze rolls, two squeeze rolls rotate in opposite directions and grind the material, guarantee squeeze roll during operation surface pressure equilibrium through even unloading, avoid forming squeeze roll surface local and pile up too much material and cause grinding effect poor and squeeze roll surface local wearing and tearing seriously, through setting up squeeze roll into the structure of assembling, make each tip roll surface and middle part roll surface can dismantle alone and install, reduce replacement cost and change of being more convenient for.
3. The first rotating shaft drives the refining shaft and the partition plate to rotate, so that a refining area formed by the partition plate and the refining shaft can be switched, when one refining area opening is communicated with a first blanking opening at the upper side of the refining cavity, materials can fall into the refining area through the first blanking opening, along with the rotation of the first rotating shaft, the opening of the refining area slides along the inner wall surface of the refining cavity until the opening is communicated with a second blanking opening at the lower side of the refining cavity, and the materials in the refining area can uniformly fall between two extrusion rollers below from the second blanking opening, so that the distribution of the materials between the extrusion rollers is uniform, the grinding effect of the materials is improved, and the surface of the extrusion rollers is prevented from being severely worn.
4. Through the transmission meshing of third gear and fourth gear, the transmission shaft drives first pivot intermittent type and rotates, and whenever a refining region rotates to the opening just when overlapping with second feed opening, the refining mechanism pauses the rotation, provides certain buffering time for the grinding of squeeze roll to improve the grinding effect to the material.
5. The end roller surface, the middle roller surface and the connecting roller surface are assembled to form the complete roller surface, the roller body and the special-shaped shaft are easy and convenient to assemble and disassemble, all the parts can be assembled and disassembled independently, and when the special-shaped shaft is assembled together, the special-shaped shaft is firm in structure and cannot loosen, so that the replacement of all the parts is convenient, the replacement cost of the squeeze roller is effectively reduced, and the normal grinding effect of materials cannot be influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling a roll squeezer based on fuzzy control in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of a low-cost high-efficiency roll squeezer based on fuzzy control according to an embodiment of the invention;
FIG. 3 is a schematic perspective view of a low cost high efficiency roll squeezer based on fuzzy control according to an embodiment of the invention;
FIG. 4 is a schematic diagram of explosion of a low cost high efficiency squeeze roll of a roll squeezer based on fuzzy control according to an embodiment of the invention;
FIG. 5 is a schematic view of explosion of a roll surface of a roll squeezer with low cost and high efficiency based on fuzzy control according to an embodiment of the invention;
FIG. 6 is a schematic diagram showing a partial cross-sectional structure of a low-cost high-efficiency roll squeezer based on fuzzy control according to the embodiment of the invention;
FIG. 7 is a schematic view of a squeeze roll driving structure of a low cost high efficiency roll squeezer based on fuzzy control according to an embodiment of the invention;
fig. 8 is an assembled side view of a third gear and a fourth gear of a low cost, high efficiency roll squeezer based on fuzzy control according to an embodiment of the invention.
In the figure:
1. a roll squeezer body; 11. a feed hopper; 12. rolling the case; 121. a material homogenizing cavity; 122. a grinding cavity; 123. supporting the side plates; 13. an equipment box; 2. a material homogenizing mechanism; 21. a first rotating shaft; 22. a material homogenizing shaft; 23. a partition plate; 3. a drive assembly; 31. a first gear; 32. a transmission shaft; 33. a second gear; 34. a third gear; 341. a gear body; 342. spaced gear teeth; 35. a fourth gear; 4. a roll surface; 41. an end roller surface; 411. a first screw hole seat; 412. a second screw hole seat; 42. a middle roll surface; 421. a third screw hole seat; 422. a second clamping groove; 43. joining the roller surfaces; 431. a first engagement roller surface; 4311. a first clamping block; 4312. a third clamping groove; 432. a second engagement roller surface; 4321. a second clamping block; 5. a roller body; 51. a special-shaped hole; 52. a mounting groove; 53. a first thread groove; 54. a threaded hole; 6. a roll shaft; 61. a contoured shaft; 62. a second rotating shaft; 63. a connecting shaft; 64. a mounting plate; 641. a special-shaped groove; 642. a second thread groove; 7. a screw; 71. a first screw; 72. and a second screw.
Detailed Description
For the purpose of further illustrating the various embodiments, the present invention provides the accompanying drawings, which are a part of the disclosure of the present invention, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present invention, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.
According to an embodiment of the invention, a roller press control method based on fuzzy control is provided
The invention will be further described with reference to the accompanying drawings and detailed description, as shown in fig. 1, a roll squeezer control method based on fuzzy control according to an embodiment of the invention, the method comprising the following steps:
s1, acquiring state data in the running process of a roller press and blurring, wherein the state data comprise running current I, running power P, material extrusion rate V, fine material content R in a material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press;
s2, establishing a fuzzy control rule according to assignment of fuzzy variables, wherein the fuzzy control rule comprises the following steps:
s21, establishing a fuzzy control rule base which adopts an IF-THEN rule;
s22, establishing nodes under the rule base;
s23, a child node is built under the node, wherein the child node is a variable of the running of the roller press.
S24, configuring a parameter table for the child node;
s25, defining a triangle membership function for parameters needing blurring processing, wherein the expression is as follows:
wherein x is an input variable, parameters a and c respectively correspond to coordinates of left and right vertexes of the lower part of the triangle, and parameter b is a height coordinate of the vertex of the triangle;
s3, constructing a Gaussian membership function according to the fuzzy variable;
s4, fitting the Gaussian membership function to generate an excitation function, and normalizing the excitation function to obtain a convergence value;
s5, establishing a self-adaptive fuzzy model based on a fuzzy rule, wherein the self-adaptive fuzzy model comprises the following steps:
s51, realizing a fuzzy rule front part according to the convergence value of the excitation function, wherein fuzzy output values of different nodes correspondingly output different fuzzy inference rules;
s52, adjusting fuzzy reasoning rule parameters and membership function parameters by using a least square method and a back propagation algorithm, and completing a fuzzy rule back part to obtain a self-adaptive neural fuzzy system;
s6, acquiring real-time running data I of the roller press n ,P n ,V n ,R n ,ΔI n ,ΔP n Outputting a fuzzy quantity set u according to the adaptive fuzzy model c (x)；
S7, performing deblurring treatment on the output fuzzy result by using a gravity center method, wherein the specific function of the gravity center method is as follows,
wherein x is an input variable, a and b are respectively the upper limit value and the lower limit value of the value range of x, u c (x) A fuzzy quantity set is output;
s8, according to the deblurring result dfg (x) The running state of the roller press, namely the running current I, the running power P, the material extrusion rate V, the fine material content R in the material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press are regulated, so that the roller press is in the optimal running state.
According to another aspect of the present invention, there is also provided a roll squeezer based on fuzzy control, as shown in fig. 2 to 8, comprising a roll squeezer main body 1, a material homogenizing mechanism 2, squeeze rolls and a driving assembly 3, wherein the roll squeezer main body 1 comprises a feed hopper 11, a roll squeezer box 12 and an equipment box 13, the material homogenizing mechanism 2 and the squeeze rolls are sequentially arranged inside the roll squeezer box 12 from top to bottom, the driving assembly 3 is arranged inside the equipment box 13 and is used for driving the material homogenizing mechanism 2 and the two squeeze rolls simultaneously, the material entering the roll squeezer box 12 from the feed hopper 11 uniformly falls between the two squeeze rolls through rotation of the material homogenizing mechanism 2, and the two squeeze rolls synchronously rotate in opposite directions to grind the material;
the squeeze roll comprises a roll surface 4, a roll body 5, a roll shaft 6 and screws 7, wherein the roll body 5 is detachably assembled on the roll shaft 6, the roll surface 4 comprises an end roll surface 41 and a middle roll surface 42, the end roll surface 41 and the middle roll surface 42 are semi-circular, and the end roll surface 41 and the middle roll surface 42 are detachably assembled at the middle part and the end part of the roll body 5 through the screws 7 respectively.
In one embodiment, for the above-mentioned refining mechanism 2, the refining mechanism 2 includes a first rotating shaft 21, a refining shaft 22 and a partition plate 23, where the first rotating shaft 21 is disposed at two ends of the refining shaft 22, the first rotating shaft 21 is driven to rotate by the driving component 3, the partition plate 23 is uniformly distributed on the surface of the refining shaft 22, and any two adjacent partition plates 23 and the refining shaft 22 form a refining area with an opening.
In one embodiment, for the roll shaft 6, the roll shaft 6 includes a profiled shaft 61, a second rotating shaft 62, a fixed mounting member and a movable mounting member, one end of the profiled shaft 61 is fixedly connected with the second rotating shaft 62, the fixed mounting member is fixedly assembled at the joint of the profiled shaft and the second rotating shaft, the two second rotating shafts 62 are driven to rotate synchronously in opposite directions by the driving assembly 3, and the roll body 5 is sleeved on the profiled shaft 61 through a radially opened profiled hole 51; the fixed mounting piece and the movable mounting piece both comprise a connecting shaft 63 and a mounting plate 64, a special-shaped groove 641 is formed in the surface of the mounting plate 64 of the movable mounting piece, and the movable mounting piece is sleeved at the other end of the special-shaped shaft 61 through the special-shaped groove 641; the profile of the shaped hole 51 and the profile of the shaped groove 641 are respectively matched with the profile of the shaped shaft 61.
In one embodiment, for the above rolling machine case 12, the rolling machine case 12 includes a refining chamber 121, a grinding chamber 122 and a supporting side plate 123, the refining chamber 121 is cylindrical, the inner wall surface of the refining chamber 121 is just contacted with the end of the partition plate 23, a first blanking opening is formed at the junction of the refining chamber 121 and the feed hopper 11, a second blanking opening is formed at the junction of the refining chamber 121 and the grinding chamber 122, and the opening sizes of the first blanking opening and the second blanking opening are both consistent with the opening size of the refining area; the supporting side plates 123 are arranged at two ends of the grinding cavity 122, two mounting holes are respectively formed in the surfaces of the supporting side plates 123, and the connecting shafts 63 are respectively mounted on the mounting holes through bearings.
In one embodiment, for the driving assembly 3, the driving assembly 3 includes a power source and a first gear 31, two first gears 31 meshed with each other are fixedly sleeved on the surfaces of two second rotating shafts 62, and the power source is connected with one of the second rotating shafts 62; the outer wall of one side of the rolling machine case 12, which is close to the equipment case 13, is provided with a transmission shaft 32, a second gear 33 and a third gear 34 are fixedly sleeved on the surface of the transmission shaft 32, a fourth gear 35 is fixedly sleeved on the surface of the first rotating shaft 21, the second gear 33 is meshed with one of the first gears 31, and the third gear 34 is meshed with the fourth gear 35; the third gear 34 includes a gear main body 341 and spaced gear teeth 342, the spaced gear teeth 342 are uniformly distributed on the surface of the gear main body 341, and the rotatable angle of the spaced gear teeth 342 when meshed with the fourth gear 35 is consistent with the opening angle of the material homogenizing region.
In one embodiment, for the screw 7, the screw 7 includes a first screw 71 and a second screw 72, a first screw hole seat 411 is provided on one side of the end roller surface 41, mounting grooves 52 are respectively provided at two ends of the roller 5, a first screw thread groove 53 and a screw hole 54 are provided on the surface of the roller 5, the mounting plates 64 are respectively provided in the mounting grooves 52, a second screw thread groove 642 is uniformly provided at the side of the mounting plates 64, and the first screw hole seat 411, the screw hole 54 and the second screw thread groove 642 which are corresponding in position are respectively fixedly assembled by the first screw 71; the other side of the end roller surface 41 is provided with a second screw hole seat 412, two sides of the middle roller surface 42 are respectively provided with a third screw hole seat 421, the second screw hole seat 412 and the first screw groove 53 which correspond to each other in position and the third screw hole seat 421 and the first screw groove 53 are respectively fixedly assembled through a second screw 72, and the second screw hole seat 412 and the third screw hole seat 421 are distributed in a staggered manner; the roller surface 4 further comprises a connecting roller surface 43, and the connecting roller surface 43 is detachably assembled on the outer side of the joint of the second screw hole seat 412 and the third screw hole seat 421; the joining roller surface 43 comprises a first joining roller surface 431 and a second joining roller surface 432, the first joining roller surface 431 and the second joining roller surface 432 are combined to form a complete circular ring and are assembled at the joint of the end roller surface 41 and the middle roller surface 42 in a thermal expansion and cold contraction mode, and the end roller surface 41 and the middle roller surface 42 of the first joining roller surface 431 and the second joining roller surface 432 are further fastened through a clamping groove clamping block structure.
In order to facilitate understanding of the above technical solutions of the present invention, the following describes in detail the working principle or operation manner of the present invention in the actual process.
During practical application, the material to be ground is put into the rolling machine case 12 from the feed hopper 11, the material firstly falls into the working area of the material homogenizing mechanism 2, the material is driven to rotate by the driving component 3, the material uniformly falls between the two extrusion rollers, the two extrusion rollers are driven to rotate in opposite directions and synchronously by the driving component 3, the crushing and grinding of the material are realized, and the ground material is discharged through the discharge hole at the lower side of the rolling machine case 12.
One of the second rotating shafts 62 is driven to rotate by a power source, the two second rotating shafts 62 are driven to synchronously rotate in opposite directions by the two first gears 31 which are meshed with each other, the second rotating shafts 62 drive the special-shaped shafts 61 to rotate, and then the special-shaped shafts 61 drive the roller bodies 5 to rotate, and the two roller bodies 5 respectively drive the end roller surfaces 41 and the middle roller surface 42 on the surfaces of the roller bodies to synchronously rotate; meanwhile, under the meshing transmission of one of the first gears 31 and the second gears 33, the transmission shaft 32 is driven to rotate through the second rotating shaft 62, and then under the meshing transmission of the third gear 34 and the fourth gear 35, the transmission shaft 32 can drive the first rotating shaft 21 to intermittently rotate, and the first rotating shaft 21 drives the refining shaft 22 and the partition plate 23 to rotate, so that a refining area formed by the partition plate 23 and the refining shaft 22 can be switched;
the material to be ground is fed from the feed hopper 11, when the first rotating shaft 21 rotates to the state that the opening of one of the refining areas is communicated with the first discharging opening on the upper side of the refining cavity 121, the material in the feed hopper 11 falls into the refining area through the first discharging opening, along with the rotation of the first rotating shaft 21, the opening of the refining area slides along the inner wall surface of the refining cavity 121 until the opening is communicated with the second discharging opening on the lower side of the refining cavity 121, and the material in the refining area uniformly falls between the two extrusion rollers below from the second discharging opening, and is crushed and milled along with the rotation of the extrusion rollers.
Wherein, the roller body 5 and the irregular shaft 61 are assembled and are convenient to replace; the end roller surface 41, the middle roller surface 42 and the connecting roller surface 43 are assembled to form a complete roller surface, and each roller surface part can be independently disassembled and assembled.
In summary, by means of the technical scheme, the self-adaptive fuzzy control method is constructed, circuit data and material information of material extrusion during the operation of the roller press can be introduced to form a multi-input-output fuzzy control system, so that the operation state of the roller press can be adjusted in real time according to working conditions, the load of the roller press is balanced, the roller press is guaranteed to be in an optimal operation state, and the purposes of high efficiency and energy conservation are achieved.
Through set gradually refining mechanism 2 and squeeze rolls from top to bottom in roll-in machine case 12, drive refining mechanism 2 and two squeeze rolls simultaneously through drive assembly 3, it evenly falls between two squeeze rolls to get into the inside material of roll-in machine case 12 through feeding hopper 11 through the rotation of refining mechanism 2, two squeeze rolls grind the material in opposite directions synchronous rotation, guarantee squeeze roll during operation surface pressure equilibrium through even unloading, avoid forming squeeze roll surface partial pile up too much material and cause grinding effect poor and squeeze roll surface partial wearing and tearing seriously, through setting up squeeze roll into the structure of assembling, make each tip roll surface and middle part roll surface can dismantle alone and install, reduce replacement cost and change of being more convenient for.
The first rotating shaft 21 drives the refining shaft 22 and the partition plate 23 to rotate, so that a refining area formed by the partition plate 23 and the refining shaft 22 can be switched, when an opening of one refining area is communicated with a first discharging opening at the upper side of the refining cavity, materials can fall into the refining area through the first discharging opening, along with the rotation of the first rotating shaft 21, the opening of the refining area slides along the inner wall surface of the refining cavity until the opening is communicated with a second discharging opening at the lower side of the refining cavity, and the materials in the refining area can uniformly fall between two extrusion rollers below from the second discharging opening, so that the distribution of the materials between the extrusion rollers is ensured to be uniform, the grinding effect of the materials is improved, and the surface of the extrusion rollers is prevented from being severely worn.
Through the transmission engagement of third gear 34 and fourth gear 35, transmission shaft 32 drives first pivot 21 intermittent type rotation, and whenever a refining region rotates to the opening just when overlapping with the second feed opening, the refining mechanism pauses the rotation, provides certain buffering time for the grinding of squeeze roll to improve the grinding effect to the material.
The end roller surface 41, the middle roller surface 42 and the connecting roller surface 43 are assembled to form the complete roller surface 4, the roller body 5 and the special-shaped shaft 61 are easy and convenient to assemble and disassemble, all parts can be assembled and disassembled independently, and when the special-shaped shaft 61 is assembled together, the special-shaped shaft is firm in structure, cannot loosen, is convenient to replace all parts, effectively reduces replacement cost of the squeeze roller, and cannot influence normal grinding effects of materials.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The control method of the roller press based on fuzzy control is characterized by comprising the following steps of:
s1, acquiring state data in the running process of a roller press and blurring, wherein the state data comprise running current I, running power P, material extrusion rate V, fine material content R in a material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press;
s2, establishing a fuzzy control rule according to assignment of fuzzy variables, wherein the fuzzy control rule comprises the following steps:
s21, establishing a fuzzy control rule base which adopts an IF-THEN rule;
s22, establishing nodes under the rule base;
s23, sub-nodes are built under the nodes, wherein the sub-nodes are variables of the running of the roller press;
s24, configuring a parameter table for the child node;
s25, defining a triangle membership function for parameters needing blurring processing, wherein the expression is as follows:
wherein x is an input variable, parameters a and c respectively correspond to coordinates of left and right vertexes of the lower part of the triangle, and parameter b is a height coordinate of the vertex of the triangle;
s3, constructing a Gaussian membership function according to the fuzzy variable;
s4, fitting the Gaussian membership function to generate an excitation function, and normalizing the excitation function to obtain a convergence value;
s5, establishing a self-adaptive fuzzy model based on a fuzzy rule, wherein the self-adaptive fuzzy model comprises the following steps:
s51, realizing a fuzzy rule front part according to the convergence value of the excitation function, wherein fuzzy output values of different nodes correspondingly output different fuzzy inference rules;
s52, adjusting fuzzy reasoning rule parameters and membership function parameters by using a least square method and a back propagation algorithm, and completing a fuzzy rule back part to obtain a self-adaptive neural fuzzy system;
s6, acquiring real-time operation data of the roller press, namely, the real-time operation current I of the roller press n Operating power P n Extrusion rate V of material n Content of fines in cake R n Rate of change Δi of operating current n Rate of change Δp of operating power n Outputting a fuzzy quantity set u according to the adaptive fuzzy model c (x)；
S7, performing deblurring treatment on the output fuzzy result by using a gravity center method, wherein the specific function of the gravity center method is as follows,
where x is the inputThe variables a and b are the upper and lower limit values of the value range of x, u c (x) A fuzzy quantity set is output;
s8, adjusting the running state of the roller press according to the deblurring result dfg (x), namely, the running current I, the running power P, the material extrusion rate V, the fine material content R in the material cake, the change rate delta I of the running current and the change rate delta P of the running power of the roller press, so that the roller press is in the optimal running state.
2. The low-cost high-efficiency roller press based on fuzzy control is characterized by comprising a roller press main body (1), a material homogenizing mechanism (2), squeeze rollers and a driving assembly (3), wherein the roller press main body (1) comprises a feed hopper (11), a roller press case (12) and an equipment case (13), the material homogenizing mechanism (2) and the squeeze rollers are sequentially arranged in the roller press case (12) from top to bottom, the driving assembly (3) is arranged in the equipment case (13) and is used for simultaneously driving the material homogenizing mechanism (2) and the two squeeze rollers, the material entering the roller press case (12) from the feed hopper (11) uniformly falls between the two squeeze rollers through rotation of the material homogenizing mechanism (2), and the two squeeze rollers synchronously rotate in opposite directions to grind the material;
squeeze roll includes roll surface (4), roll body (5), roller (6), screw (7), roll body (5) detachable assembly is in on roller (6), roll surface (4) are including tip roll surface (41), middle part roll surface (42), tip roll surface (41) with middle part roll surface (42) are the semicircle annular, tip roll surface (41) with middle part roll surface (42) are respectively through screw (7) detachable assembly is in the middle part and the tip of roll body (5).
3. The roll squeezer with low cost and high efficiency based on the fuzzy control according to claim 2, wherein the roll shaft (6) comprises a special-shaped shaft (61), a second rotating shaft (62), a fixed mounting piece and a movable mounting piece, one end of the special-shaped shaft (61) is fixedly connected with the second rotating shaft (62), the fixed mounting piece is fixedly assembled at the joint of the two rotating shafts, the two second rotating shafts (62) are driven by the driving component (3) to synchronously rotate in opposite directions, and the roll body (5) is sleeved on the special-shaped shaft (61) through a special-shaped hole (51) which is radially formed;
the fixed mounting piece and the movable mounting piece both comprise a connecting shaft (63) and a mounting plate (64), a special-shaped groove (641) is formed in the surface of the mounting plate (64) of the movable mounting piece, and the movable mounting piece is sleeved at the other end of the special-shaped shaft (61) through the special-shaped groove (641);
the profiles of the special-shaped holes (51) and the special-shaped grooves (641) are respectively matched with the profile of the special-shaped shaft (61).
4. A low-cost and high-efficiency roll squeezer based on fuzzy control according to claim 3, wherein the refining mechanism (2) comprises a first rotating shaft (21), a refining shaft (22) and a partition plate (23), the first rotating shaft (21) is arranged at two ends of the refining shaft (22), the first rotating shaft (21) is driven to rotate by the driving component (3), the partition plate (23) is uniformly distributed on the surface of the refining shaft (22), and any two adjacent partition plates (23) and the refining shaft (22) form a refining area with an opening;
the rolling machine case (12) comprises a refining cavity (121), a grinding cavity (122) and a supporting side plate (123), wherein the refining cavity (121) is cylindrical, the inner wall surface of the refining cavity (121) is just contacted with the end part of a partition plate (23), a first blanking opening is formed in the joint of the refining cavity (121) and the feeding hopper (11), a second blanking opening is formed in the joint of the refining cavity (121) and the grinding cavity (122), and the opening sizes of the first blanking opening and the second blanking opening are consistent with the opening size of a refining area; the support side plates (123) are arranged at two ends of the grinding cavity (122), two mounting holes are respectively formed in the surfaces of the support side plates (123), and the connecting shafts (63) are respectively mounted on the mounting holes through bearings.
5. The roll squeezer with low cost and high efficiency based on fuzzy control according to claim 4, wherein said driving assembly (3) comprises a power source and a first gear (31), two first gears (31) meshed with each other are respectively fixedly sleeved on the surfaces of two second rotating shafts (62), and said power source is connected with one of said second rotating shafts (62);
a transmission shaft (32) is assembled on the outer wall of one side of the rolling machine case (12) close to the equipment case (13), a second gear (33) and a third gear (34) are fixedly sleeved on the surface of the transmission shaft (32), a fourth gear (35) is fixedly sleeved on the surface of the first rotation shaft (21), the second gear (33) is meshed with one of the first gears (31), and the third gear (34) is meshed with the fourth gear (35);
the third gear (34) comprises a gear main body (341) and interval gear teeth (342), wherein the interval gear teeth (342) are uniformly distributed on the surface of the gear main body (341), and the rotatable angle of the interval gear teeth (342) is consistent with the opening angle of the material homogenizing area when the interval gear teeth (342) are meshed with the fourth gear (35).
6. The roll squeezer with low cost and high efficiency based on fuzzy control according to claim 5, wherein the screw (7) comprises a first screw (71) and a second screw (72), a first screw hole seat (411) is arranged on one side of the end roll surface (41), mounting grooves (52) are respectively formed in two ends of the roll body (5), a first screw thread groove (53) and a screw hole (54) are formed in the surface of the roll body (5), the mounting plates (64) are respectively arranged in the mounting grooves (52), second screw thread grooves (642) are uniformly formed in the side parts of the mounting plates (64), and the first screw hole seat (411), the screw hole (54) and the second screw thread groove (642) which are corresponding in position are fixedly assembled through the first screw (71) respectively;
a second screw hole seat (412) is arranged on the other side of the end roller surface (41), a third screw hole seat (421) is respectively arranged on two sides of the middle roller surface (42), the second screw hole seat (412) and the first screw hole seat (53) which are corresponding in position are fixedly assembled through the second screw (72) respectively, and the second screw hole seat (412) and the third screw hole seat (421) are distributed in a staggered manner;
the roller surface (4) further comprises a connecting roller surface (43), and the connecting roller surface (43) is detachably assembled on the outer side of the joint of the second screw hole seat (412) and the third screw hole seat (421);
the connecting roll surface (43) comprises a first connecting roll surface (431) and a second connecting roll surface (432), the first connecting roll surface (431) and the second connecting roll surface (432) are combined to form a complete circular ring, the connecting positions of the end roll surface (41) and the middle roll surface (42) are assembled in a thermal expansion and cold contraction mode, and the first connecting roll surface (431) and the second connecting roll surface (432) are further fastened through a clamping groove clamping block structure between the end roll surface (41) and the middle roll surface (42).
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