Intelligent control system of industrial pulverizer

Abstract

The invention discloses an intelligent control system of an industrial pulverizer, and aims to solve the technical problem that an existing control system cannot perform cooperative control on a host motor and a feeding motor. Comprising a remote terminal unit, the remote terminal unit comprises a field information acquisition interface and an information conditioning device, the field information acquisition interface is connected with an operation monitoring sensor of the industrial pulverizer so as to acquire the operation condition of the industrial pulverizer, and the information conditioning device is used for carrying out information conditioning processing on the information of the operation condition; the data after information conditioning processing is transmitted to the main control unit; the motor control center unit is in communication connection with the main control unit and uniformly controls operation of a host motor and a feeding motor in the industrial crusher; the main control unit is used for executing a control program, sending a control instruction to the motor control center unit, and receiving and processing data from the remote terminal unit and feedback of the motor control center unit at the same time; and a motor associated control unit.

Description

Technical Field

[0001] The invention relates to an intelligent control system for an industrial pulverizer, in particular to an intelligent control system for an ultrafine pulverizer for feed processing. Background Art

[0002] Vertical ultrafine pulverizer (reference: patent authorization announcement number is CN212348945U) is mainly used in various large, medium and small feed factories for ultrafine pulverization of various coarse powder materials to achieve the required standard finer particle size. The structure of the vertical ultrafine pulverizer includes a pulverizing chamber, a pulverizing disc arranged horizontally in the pulverizing chamber, a pulverizing disc rotating drive mechanism connected to the pulverizing disc (generally speaking, the pulverizing disc rotating drive mechanism includes a pulverizing disc rotating drive shaft assembly and a main engine motor, the pulverizing disc rotating drive shaft assembly is installed on the base at the lower part of the pulverizing chamber, the pulverizing disc rotating drive shaft assembly includes a pulverizing disc rotating drive main shaft (transmission shaft) installed in the upper bearing system and the lower bearing system, the pulverizing disc rotating drive main shaft is installed with a pulverizing disc at the upper end and the main engine motor is connected to the lower end through a belt drive mechanism) and a feeding mechanism, a discharging structure and an air intake structure respectively connected to the pulverizing chamber, and a pulverizing structure (through a pulverizing structure) is provided between the edge of the pulverizing disc and the area on the inner wall of the pulverizing chamber corresponding to the edge. The vertical mill usually includes a hammer head arranged at the edge of the pulverizing disk and a gear ring arranged in an area corresponding to the edge on the inner wall of the pulverizing chamber. When working, the pulverizing disk is driven to rotate in the pulverizing chamber by a pulverizing disk rotation drive mechanism, so that the material transported to the pulverizing structure by a feeding mechanism is pulverized by the pulverizing structure. The rotation centerline of the pulverizing disk is vertically arranged when rotating. The feeding port of the feeding mechanism (usually a screw feeder driven by a feeding motor) is arranged above the pulverizing disk. The air intake structure is used to introduce an upward airflow into the lower part of the pulverizing chamber. The discharging structure (usually including a material grading mechanism and a discharging chamber) is located at the upper part of the pulverizing chamber and is used to discharge the pulverized material out of the airflow introduced into the pulverizing chamber from the air intake structure.

[0003] The working principle of the above-mentioned vertical ultrafine pulverizer is as follows: a pulverizing disk is arranged in the pulverizing chamber, a plurality of hammers are arranged at intervals at the circumferential edge of the pulverizing disk, a gear ring is arranged in the radial outer area of ​​the pulverizing disk, the pulverizing disk drives the hammer to rotate at high speed, and the material falls downward into the space between the hammer and the gear ring through the feed port of the feeding mechanism. Thereafter, the material is crushed under the impact of the high-speed hammer and the friction and shearing action between the hammer and the gear ring, and the pulverized material enters the material grading mechanism (usually a material grading wheel) for grading, and the qualified pulverized material is carried by the airflow through the material grading wheel and sent away through the discharge chamber, and the unqualified pulverized material falls onto the high-speed rotating pulverizing disk, and the material on the pulverizing disk is thrown between the gear ring and the hammer under the action of centrifugal force, and is hit by the hammer again and rubbed and sheared between the hammer and the gear ring.

[0004] The maximum capacity of a vertical superfine pulverizer (the maximum capacity that the main motor can reach at rated power) and unit energy consumption (the energy consumed to produce unit mass of material when the maximum capacity is reached, usually expressed in kWh / t) are the two core performance indicators of a vertical superfine pulverizer. Among them, there is an obvious positive correlation between the maximum capacity of a vertical superfine pulverizer and the diameter of its pulverizing disc, that is, as the diameter of the pulverizing disc increases, the working area increases in a square relationship, providing a wider action surface for material processing; at the same time, as the diameter of the pulverizing disc increases, the linear speed of the edge of the pulverizing disc increases accordingly, which enhances the impact energy and shear force, and improves the material pulverizing efficiency. At present, the diameter of the pulverizing disc of mainstream large vertical superfine pulverizers on the market is limited to 1500mm. This is mainly because: if the diameter of the pulverizing disc is further increased, the increase in unit energy consumption tends to be flat and shows a marginal diminishing effect.

[0005] Taking several vertical superfine pulverizers manufactured by the applicant as an example, as shown in Table 1, when the diameter of the crushing disk increases from 1300mm to 1500mm, the unit energy consumption decreases from 18.9kWh / t (this value is obtained by dividing 132kW in Table 1 by 7 (t / h)) to 13.3kWh / t, and the efficiency is significantly improved; but after the diameter of the crushing disk continues to increase to 1700mm, the unit energy consumption rises back to 14.7kWh / t, showing a rebound trend after the critical point. The inventors have found that the marginal decreasing effect of the unit energy consumption of the vertical superfine pulverizer is due to the interaction of multiple complex factors: as the diameter of the crushing disk continues to increase, the problem of uneven material distribution increases; at the same time, the energy loss of the rotating drive mechanism of the crushing disk increases nonlinearly with the increase in size, and the proportion of bearing friction, gear transmission and wind resistance loss increases; the inertial mass of the crushing disk increases, the structural vibration and deformation are more significant, and more energy is required to maintain stability.

[0006]

[0007] In the process of developing a vertical superfine pulverizer that can both increase the maximum production capacity of the vertical superfine pulverizer and effectively overcome the marginal diminishing effect of unit energy consumption, the applicant found that the control system of the existing superfine pulverizer usually controls the main motor and the feeding motor as two independent units, lacking an effective intelligent coordination mechanism. In actual production, the operator needs to manually adjust the feeding rate based on experience to adapt to the load changes of the main motor. This control method has obvious shortcomings: on the one hand, when the load of the main motor is too large, the overload protection may trip due to delayed reaction, causing production interruption; on the other hand, when the load of the main motor is too small, it may cause the equipment to idle and reduce energy utilization efficiency. Especially for large vertical superfine pulverizers with a crushing disc diameter of more than 1500mm, due to its high working power, large material processing volume, and increased inertial mass of the crushing disc, the defects of the traditional control method are particularly prominent. Summary of the invention

[0008] The purpose of the present invention is to provide an improved intelligent control system for an industrial pulverizer to solve the technical problem that the existing control system cannot perform coordinated control over the main motor and the feeding motor.

[0009] The intelligent control system of an industrial pulverizer of the present invention includes: a remote terminal unit, including a field information collection interface and an information conditioning device, wherein the field information collection interface collects the operating status of the industrial pulverizer by connecting to the operating monitoring sensor of the industrial pulverizer, and the information conditioning device is used to perform information conditioning processing on the information of the operating status, and transmit the data after information conditioning processing to the main control unit; a motor control center unit, which is communicatively connected to the main control unit and uniformly controls the operation of the main motor and feeding motor in the industrial pulverizer; a main control unit, which is used to execute a control program and send control instructions to the motor control center unit, while receiving and processing data from the remote terminal unit and feedback from the motor control center unit, and associating a human-machine interface component, wherein the human-machine interface component is used to display the operating status of the industrial pulverizer and receive operation instructions; a motor association control unit, which is used to associate and control the main motor and the feeding motor, so that the operating parameters of the main motor and the operating parameters of the feeding motor maintain a set matching relationship.

[0010] The remote terminal unit (RTU) of the above-mentioned industrial pulverizer intelligent control system is responsible for collecting operating data from the industrial pulverizer and performing information conditioning and processing; the motor control center unit (MCC) realizes the unified control of the main motor and the feeding motor, and the main control unit executes the control program and coordinates the operation of each unit. Through this clear hierarchical structure and functional allocation, the industrial pulverizer intelligent control system not only ensures the relative independence of each unit, but also realizes overall coordinated control, laying a control foundation for the efficient and stable operation of industrial pulverizers, especially large vertical ultra-fine pulverizers. The specially set motor association control unit realizes the association control of the main motor and the feeding motor, ensuring that the operating parameters of the two maintain the set matching relationship.

[0011] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages provided by the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting a part of this specification are used to assist the understanding of the present invention. The contents provided in the drawings and the related descriptions in this specification can be used to explain the present invention, but do not constitute improper limitations on the present invention.

[0013] Figure 1This is a structural principle diagram of an industrial pulverizer intelligent control system according to an embodiment of the present invention.

[0014] Figure 2 for Figure 1 The structural schematic diagram of the motor control center unit (MCC) in the figure.

[0015] Figure 3 for Figure 1 Schematic diagram of the human-machine interface components of an industrial pulverizer intelligent control system.

[0016] Figure 4 for Figure 3 Schematic diagram of the setting of the "Fixed ratio mode" option in the "Association mode" in .

[0017] Figure 5 for Figure 3 Schematic diagram of the setting option of "Load response mode" in "Association mode".

[0018] Figure 6 for Figure 3 Schematic diagram of the settings for the "Auto Adjust" option in .

[0019] Figure 7 The present invention is a three-dimensional diagram of a vertical ultrafine pulverizer according to an embodiment of the present invention.

[0020] Figure 8 for Figure 7 A cross-sectional view of a vertical ultrafine pulverizer is shown.

[0021] Fig. 9 for Figure 7 Schematic diagram of the hammer spacing in the vertical ultrafine pulverizer shown.

[0022] Fig.10 for Figure 7 The diagram shown is a schematic diagram of the improved rotating drive mechanism of the vertical ultrafine pulverizer pulverizing disk.

[0023] Marked in the figure are: crushing chamber 1, crushing disc 11, hammer head 12, gear ring 13, hammer tooth gap 14, wind flow cover 15, wind flow cover side 151, wind flow cover top 152, crushing disc rotation drive mechanism 2, crushing disc rotation drive shaft assembly 21, crushing disc rotation drive main shaft 211, upper bearing system 212, lower bearing system 213, main engine motor 22, belt transmission mechanism 23, feeding mechanism 3, feeding pipe 31, screw feeder 32, feeding motor 33, transmission mechanism 34, bracket 35, discharging structure 4, discharging chamber 41, material grading wheel 42, material grading wheel rotation drive motor 43, material grading wheel rotation drive shaft assembly 44, discharging port 45, remote terminal unit 51, motor control center unit 52, main engine motor inverter 521, feeding motor inverter 522, controller 523, main control unit 53, network switch 54, host computer system 55, emergency control unit 56. DETAILED DESCRIPTION

[0024] The present invention is described clearly and completely below in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that: The technical solutions and technical features provided in each section, including the following description, can be combined with each other without conflict. In addition, where possible, these technical solutions, technical features and related combinations can be assigned specific technical themes and protected by relevant patents.

[0025] The embodiments of the present invention involved in the following description are generally only a part of the embodiments rather than all the embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of patent protection.

[0026] The terms "include", "comprises", "have" and any variations thereof in this specification and the corresponding claims and related parts are intended to cover non-exclusive inclusions. Other related terms and units can be reasonably interpreted based on the relevant content provided in this specification.

[0027] Figure 7 The present invention is a three-dimensional diagram of a vertical ultrafine pulverizer according to an embodiment of the present invention. Figure 8 for Figure 7 A cross-sectional view of a vertical ultrafine pulverizer is shown. Fig. 9 for Figure 7 The schematic diagram of the hammer spacing in the vertical superfine pulverizer is shown in FIG. Figure 7-Figure 9As shown, the vertical ultrafine pulverizer of the embodiment of the present invention includes a pulverizing chamber 1, a pulverizing disc rotating drive mechanism 2 which is transmission-connected to a pulverizing disc 11 located in the pulverizing chamber 1, and a feeding mechanism 3, a discharging structure 4 and an air intake structure which are respectively connected to the pulverizing chamber 1.

[0028] In the pulverizing chamber 1, a pulverizing structure is provided between the edge of the pulverizing disk 11 and the area on the inner wall of the pulverizing chamber 1 corresponding to the edge. The pulverizing structure includes hammers 12 circumferentially spaced at the edge of the pulverizing disk 11 and a gear ring 13 provided in the area on the inner wall of the pulverizing chamber 1 corresponding to the edge. A hammer tooth gap 14 (reference Fig. 9 ), when working, the crushing disc 11 is driven to rotate in the crushing chamber 1 by the crushing disc rotation drive mechanism 2, so that the material delivered to the crushing structure by the feeding mechanism 3 is crushed by the crushing structure, and the rotation center line of the crushing disc 11 is vertically arranged when rotating. The spacing between adjacent hammer heads (such as Fig. 9 The spacing between adjacent hammer heads can be represented by distance D), which usually takes any value between 200mm and 250mm.

[0029] The pulverizing disc rotating drive mechanism 2 includes a pulverizing disc rotating drive shaft assembly 21 and a main engine motor 22. The pulverizing disc rotating drive shaft assembly 21 is mounted on a base at the lower portion of the pulverizing chamber 1. The pulverizing disc rotating drive shaft assembly 21 includes a pulverizing disc rotating drive main shaft 211 (transmission shaft) mounted in an upper bearing system 212 and a lower bearing system 213. The pulverizing disc rotating drive main shaft 211 has a pulverizing disc 11 mounted on its upper end and is connected to the main engine motor 22 at its lower end via a belt transmission mechanism 23.

[0030] The crushing disk rotation drive mechanism 2 is responsible for driving the crushing disk 11 to rotate at high speed to achieve material crushing. When working, the main engine motor 22 is started, and the power is transmitted to the crushing disk rotation drive main shaft 211 through the belt transmission mechanism 23. The crushing disk rotation drive main shaft 211 is installed in the upper bearing system 212 and the lower bearing system 213, and can rotate stably at high speed. The upper end of the crushing disk rotation drive main shaft 211 is connected to the crushing disk 11, thereby driving the crushing disk 11 to rotate at high speed in the crushing chamber 1, so that a strong mechanical force is formed between the hammer head 12 on the edge of the crushing disk 11 and the gear ring 13 on the inner wall of the crushing chamber 1.

[0031] The air intake structure is used to introduce an upward airflow into the lower part of the pulverizing chamber. Generally speaking, the air intake structure includes an external air intake channel arranged in a base at the lower part of the pulverizing chamber 1. In one embodiment, the external air intake channel can be arranged around the pulverizing disk rotating drive shaft assembly 21 to air cool the pulverizing disk rotating drive shaft assembly 21 (such as the upper bearing system 212 and the lower bearing system 213).

[0032] Generally speaking, a wind hood 15 is provided in the pulverizing chamber 1, and the wind hood 15 has a cylindrical side portion 151 and a top portion 152 located above the side portion 151, an upper opening of the wind hood is provided on the top, and a lower opening of the wind hood is formed at the lower end of the side portion, and the side portion is mounted on the inner wall of the pulverizing chamber 1 through a supporting structure and is coaxially arranged with the pulverizing chamber 1, the upper opening hole of the wind hood 15 is located outside the material classifying wheel 42, and the lower opening of the wind hood is suspended above the pulverizing disc 11, an internal channel is formed inside the wind hood 15, and an external channel is formed between the wind hood 15 and the inner wall of the pulverizing chamber.

[0033] The function of the wind hood 15 is to construct a wind channel. It forms an internal channel through the side 151 and the top 152, and forms an external channel with the inner wall of the pulverizing chamber 1. The upper opening of the wind hood 15 is located outside the material classification wheel 42, and the lower opening is suspended above the pulverizing disk 11 and installed coaxially with the pulverizing chamber 1. This structural design allows the upward airflow introduced by the air intake structure to form a reasonable airflow path in the pulverizing chamber 1, so that the pulverized material flows from the external channel to the material classification wheel 42 under the drive of the airflow, and the larger particles intercepted by the material classification wheel 42 go downward through the internal channel and then return to the pulverizing structure.

[0034] The discharging structure 4 is located at the upper part of the pulverizing chamber 1 and is used to discharge the pulverized material carried by the airflow introduced into the pulverizing chamber 1 from the air intake structure out of the vertical ultrafine pulverizer. Specifically, the discharging structure includes a discharging chamber 41 located at the top of the pulverizing chamber 1, a material classification wheel 42 is provided between the discharging chamber 41 and the pulverizing chamber 1, a material classification wheel rotation drive motor 43 is installed at the top of the discharging chamber 41, and the output shaft of the material classification wheel rotation drive motor 43 is connected to the material classification wheel 42 through a material classification wheel rotation drive shaft assembly 44 installed in the discharging chamber 41, and a discharging port 45 is provided on the side of the discharging chamber 41.

[0035] When the discharging structure 4 is working, the upward airflow introduced from the air intake structure carries the crushed material to the top of the crushing chamber 1, and the material classification wheel 42 is driven to rotate by the material classification wheel rotation drive motor 43 to classify and screen the material. The material with qualified fineness passes through the material classification wheel 42 into the discharging chamber 41 with the airflow, and is finally discharged from the discharge port 45; while the material with unqualified particle size is blocked by the material classification wheel 42 and falls back into the crushing chamber 1 to continue to be crushed.

[0036] The feeding mechanism 3 is used to quantitatively convey the material into the pulverizing chamber 1. The feeding mechanism 3 includes a feeding pipe 31, a screw feeder 32, a feeding motor 33, and a transmission mechanism 34. The feeding motor 33 is installed on the shell of the pulverizing chamber 1 through a bracket 35 and is connected to the rotating shaft in the screw feeder 32 through the transmission mechanism 34. The feeding pipe 31 is arranged outside the pulverizing chamber 1. The top of the feeding pipe 31 is connected to the screw feeder 32. The side or bottom of the feeding pipe is connected to the feeding port on the side wall of the pulverizing chamber 1. The entire feeding mechanism 3 is fixed as a whole and is supported and installed on the shell of the pulverizing chamber 1 through the bracket 35.

[0037] When the feeding mechanism 3 is working, the material is put into the feed port of the screw feeder 32, and the feeding motor 33 drives the rotating shaft in the screw feeder 32 to rotate through the transmission mechanism 34, so that the spiral blades in the screw feeder push the material along the screw feeder 32, and then enter the feeding pipe 31, and finally transported to the crushing structure in the crushing chamber 1 through the side or bottom of the feeding pipe 31 that connects with the feed port on the side wall of the crushing chamber 1, ensuring that the material enters the crushing area smoothly and continuously for crushing processing.

[0038] In the above vertical superfine pulverizer, the diameter of the pulverizing disk 11 is increased to 2000mm. On this basis, the diameter of the pulverizing disk 11 of 2000mm can be reasonably expanded to 1950mm-2050mm. This small change will not change the basic working principle and performance characteristics of the equipment. The vertical superfine pulverizer has increased the diameter of the pulverizing disk to the range of 1950mm-2050mm in a breakthrough way. This design is realized for the first time in the field of similar vertical superfine pulverizers.

[0039] In addition, in the vertical ultrafine pulverizer, the upper bearing system 212 adopts a deep groove ball bearing with a specification of 6234 or 6334, and the lower bearing system 213 adopts a deep groove ball bearing with a specification of 6234 or 6232 or 6334 or 6332.

[0040] Among the 6234 / 6334 deep groove ball bearings selected for the upper bearing series 212, the 6234 specification has an inner diameter of 170mm, an outer diameter of 310mm, and a width of 52mm, which belongs to the narrow series design; the 6334 specification maintains the same inner diameter of 170mm but the outer diameter is increased to 360mm and the width is increased to 72mm, which belongs to the medium width series; among the optional specifications of the lower bearing series 213, the 6232 bearing has an inner diameter of 160mm, an outer diameter of 290mm, and a width of 48mm; the 6332 bearing has an inner diameter of the same 160mm but an outer diameter of 340mm and a width of 68mm.

[0041] The 6234 / 6232 / 6334 / 6332 deep groove ball bearings used in the above-mentioned vertical superfine pulverizer have shown significant economic advantages. Generally speaking, for the larger-sized bearings often used in the above-mentioned vertical superfine pulverizer, these 170mm inner diameter deep groove ball bearings are smaller in size and lighter in weight, and the procurement cost is significantly reduced; and the size of the bearing seat and related supporting structures is correspondingly reduced, further saving material costs; at the same time, the small-sized bearings have a small starting torque, which reduces operating energy consumption; when maintaining and replacing, these standardized bearings are in sufficient supply in the market and are reasonably priced, reducing downtime maintenance costs. It is particularly noteworthy that these relatively economical bearings can meet the use requirements of the above-mentioned vertical superfine pulverizer, mainly because the edge linear speed of the crushing disk 11 is not high when working and the rated power increase of the main motor is not significant (which will be explained later), thus achieving a balance between cost control and equipment performance.

[0042] In addition, the vertical superfine pulverizer of the embodiment of the present invention also improves the discharging structure 4. Figure 7-Figure 8 As shown, the discharge chamber 41 is specifically a conical chamber with a small end facing upward, and the discharge port 45 has a guide channel (i.e. Figure 8 The top surface of the conical chamber intersects with the top surface of the guide channel to form an unobstructed transition area.

[0043] The vertical superfine pulverizer innovatively designs the discharge chamber 41 as a conical chamber with the small end facing upward, thus changing the fluid dynamic characteristics of the traditional discharge structure and effectively eliminating the flow dead angle and blocking point that are easily formed in the top area of ​​the discharge chamber 41. This conical structure allows the crushed materials carried by the airflow to form a uniformly contracted path during the vertical flow process, reducing the generation of eddy currents and reverse airflows. Furthermore, the guide channel of the discharge port 45 is arranged at an inclined upward angle, precisely intersecting with the top surface of the conical chamber to form an unobstructed transition area. This design detail ensures the continuity and stability of the material flow. After the crushed ultrafine materials enter the conical chamber under the airflow, they can follow the shortest resistance path, smoothly turn along the natural curvature of the inner wall of the chamber and flow through the guide channel to the pipe above the vertical superfine pulverizer (and then transport to the material collection system through the pipe), which not only improves the material transportation efficiency, but also reduces the wear caused by the high-speed impact of the material inside the discharge structure.

[0044] Generally speaking, the angle between the flow guiding direction of the flow guiding channel and the horizontal plane is 140°-170°. More specifically, the angle between the flow guiding direction of the flow guiding channel and the horizontal plane is 150°-160°.

[0045] Generally speaking, the discharge chamber 41 is a conical chamber. Optionally, the angle between the conical generatrix of the conical chamber and the axis is 20°-40°. More specifically, the angle between the conical generatrix of the conical chamber and the axis is 25°-35°.

[0046] As mentioned above, the pulverizing chamber 1 is provided with an air flow cover 15, which has a cylindrical side portion 151 and a top portion 152 located above the side portion 151, an upper opening of the air flow cover is provided on the top, and a lower opening of the air flow cover is formed at the lower end of the side portion. The side portion is mounted on the inner wall of the pulverizing chamber 1 through a supporting structure and is coaxially arranged with the pulverizing chamber 1. The upper opening hole of the air flow cover 15 is located outside the material grading wheel 42, and the lower opening of the air flow cover is suspended above the pulverizing disc 11. An internal channel is formed inside the air flow cover 15, and an external channel is formed between the air flow cover 15 and the inner wall of the pulverizing chamber.

[0047] On this basis, in an optional embodiment, the upper surface of the top of the wind cover 15 is a plane with an angle of ±10° with the diversion direction of the diversion channel. This geometric configuration allows the airflow and materials flowing from the material classification wheel 42 into the discharge chamber 41 to flow into the diversion channel more smoothly at a shorter distance, reducing the eddy current and resistance loss caused by the sudden change of the airflow direction, which helps to improve the efficiency and stability of the vertical ultrafine pulverizer during the material output process.

[0048] In addition, the cross section of the guide channel is rectangular and the difference between its inner edge width and the inner edge width of the upper end of the discharge chamber 41 is 0mm-50mm. When the discharge chamber is a conical chamber, the inner edge width of the upper end of the discharge chamber refers to the inner edge diameter of the upper end of the discharge chamber. This size configuration ensures that the flow conversion from the small end upward conical chamber to the guide channel has a minimum cross-sectional change, reducing the pressure fluctuation and vortex formation caused by the rapid expansion or contraction of the cross section.

[0049] Fig.10 for Figure 7 The schematic diagram of the improved rotating drive mechanism of the vertical superfine pulverizer is shown in FIG. Fig.10 As shown, the pulverizing disc rotating drive mechanism 2 cancels the original belt transmission mechanism 23, and the main engine motor 22 is directly mounted on the base at the bottom of the pulverizing chamber 1. The output shaft of the main engine motor 22 is directly connected to the pulverizing disc 11 as the pulverizing disc rotating drive main shaft 211 (transmission shaft). As a result, the transmission link of the pulverizing disc rotating drive mechanism 2 is simplified, the number of transmission components is reduced, and the equipment manufacturing and maintenance costs are reduced.

[0050] It can be seen from the above description that the above-mentioned vertical ultrafine pulverizer adopts innovative designs in terms of crushing disk diameter and discharge structure. However, as the crushing disk diameter increases dramatically to the range of 1950mm-2050mm, the equipment puts forward higher requirements on the control system during actual operation, especially in the coordinated control between the main motor 22 and the feeding motor 33. It faces greater challenges. This is mainly because after the crushing disk diameter increases, the action area and contact opportunities between the hammer head 12 and the gear ring 13 increase significantly. When the material is transported to the crushing structure through the feeding mechanism 3, it is easy to cause the load of the main motor 22 to fluctuate more violently. At the same time, when the crushing disk diameter reaches the 2000mm level, its moment of inertia increases significantly, and it is more sensitive to changes in the feeding rate. If the feeding motor 33 cannot be accurately adjusted according to the real-time load condition of the main motor 22, it will cause energy waste and uneven material crushing at the least, and may cause the main motor 22 to overload and trip or the crushing disk 11 to run idle and damage the equipment. In order to give full play to the advantages of the above-mentioned vertical ultrafine pulverizer and ensure the efficient and stable operation of the equipment, the applicant has also developed a matching industrial pulverizer intelligent control system. The structure and working principle of the control system will be described in detail below.

[0051] Figure 1 This is a structural principle diagram of an industrial pulverizer intelligent control system according to an embodiment of the present invention. Figure 2 for Figure 1 The structural schematic diagram of the motor control center unit (MCC) in the figure. Figure 1-Figure 2 As shown, the industrial pulverizer intelligent control system of the embodiment of the present invention includes: a remote terminal unit 51, a motor control center unit 52, a main control unit 53, a network switch 54 and a host computer system 55, an emergency control unit 56, and a motor-related control unit.

[0052] The remote terminal unit 51 includes a field information collection interface and an information conditioning device. The field information collection interface is connected to the operation monitoring sensor of the vertical superfine pulverizer to collect the operation conditions including the current, voltage, power, speed, vibration value of the transmission shaft and the temperature of the relevant bearings of the main motor 22. These operation conditions can be Figure 3 The information conditioning device performs information conditioning processing such as filtering, amplification, A / D conversion, etc. on the collected information of the operation conditions, and transmits the processed data to the main control unit 53 through the communication network.

[0053] The motor control center unit 52 is connected to the main control unit 53 for communication and unified control of the operation of the main motor 22 and the feeding motor 33 in the vertical superfine pulverizer. Figure 2As shown, the motor control center unit 52 includes a main motor frequency converter 521 and a feeding motor frequency converter 522, and the main motor frequency converter 521 and the feeding motor frequency converter 522 are used to adjust the operating parameters such as the frequency and voltage of the main motor 22 and the feeding motor 33 respectively.

[0054] The main control unit 53 is used to execute the control program and send control instructions to the motor control center unit 52, while receiving and processing data from the remote terminal unit 51 and feedback from the motor control center unit 52, and associating a human-machine interface component, which is used to display the operating status of the vertical ultrafine pulverizer and receive operating instructions.

[0055] The network switch 54 is connected to the host computer system 55 through the information transmission network on the one hand, and is connected to the main control unit 53 on the other hand, so that the host computer system 55 can remotely monitor the operation of the vertical superfine pulverizer and collect historical data. This remote monitoring function enables management personnel to grasp the operation status of the equipment in real time, perform remote diagnosis and optimization, and improve management efficiency and equipment utilization.

[0056] The emergency control unit 56 is used to provide independent control functions in the event of an abnormality or emergency of the vertical superfine pulverizer, ensuring that the vertical superfine pulverizer can still be safely controlled when the main control unit 53 fails. The emergency control unit 56 usually adopts a redundant design and operates independently from the main control unit 53, which has higher reliability and safety. When a system abnormality is detected or an emergency shutdown signal is received, the emergency control unit 56 will immediately take over the control and execute the safety shutdown procedure to prevent equipment damage and safety accidents.

[0057] The motor association control unit is used to perform association control on the host motor 22 and the feeding motor 33, so that the operating parameters of the host motor 22 and the operating parameters of the feeding motor 33 maintain a set matching relationship. Specifically, the motor association control unit includes a controller 523 and a feeding motor host motor association setting interface provided in the human-machine interface component. The controller 523 is respectively connected to the host motor inverter 521 and the feeding motor inverter 522 in the motor control center unit 52 (the host motor inverter 521 is used to control the operating parameters of the host motor 22, and the feeding motor inverter 522 is used to control the operating parameters of the feeding motor 33). The controller 523 adjusts the control parameters of the host motor inverter 521 and the control parameters of the feeding motor inverter 522 in real time, so that the operating parameters of the host motor 22 and the operating parameters of the feeding motor 33 maintain a set matching relationship. The feeding motor host motor association setting interface is used to receive the associated control parameters input by the user and transmit them to the controller 523, and the controller 523 executes the corresponding associated control logic according to the associated control parameters.

[0058] The configuration mode of the main control unit 53 and the controller 523 is any one of the following: a) integrated configuration mode, that is, the main control unit 53 and the controller 523 are integrated into the same physical unit, share processing resources and the control function is performed by the same processor; b) independent configuration mode, that is, the main control unit 53 and the controller 523 are independent physical units, each with an independent processor and resources.

[0059] The two configuration modes of the main control unit 53 and the controller 523 each have their own advantages and disadvantages. The integrated configuration mode integrates the two into the same physical unit, shares processing resources, and the same processor performs control functions, which has the advantages of simple structure, low cost, and low communication delay; however, it has the risk of single point failure, and competition for processing resources may affect the response speed. In the independent configuration mode, the main control unit 53 and the controller 523 are independent physical units, each with an independent processor and resources, with higher reliability and processing power, and can respond more quickly to the associated control requirements between the feeding motor 33 and the main motor 22, especially suitable for ultra-large vertical ultra-fine grinding machines with a crushing disc diameter of 1950mm-2050mm.

[0060] Figure 3 for Figure 1 Schematic diagram of the human-machine interface components of an industrial pulverizer intelligent control system. Figure 4 for Figure 3 Schematic diagram of the setting of the "Fixed ratio mode" option in the "Association mode" in . Figure 5 for Figure 3The following is a diagram of the setting of the "Load Response Mode" option in the "Association Mode" in the Figure 3-Figure 6 , the specific scheme of the motor-associated control unit is introduced as follows.

[0061] like Figure 3 As shown, the human-machine interface component provides a rich operating status display function, allowing operators to fully monitor the real-time operating status of the vertical superfine pulverizer. The main contents displayed on the human-machine interface component are as follows.

[0062] The main engine motor operating parameter area displays the key working data of the main engine motor 22. The large number in the center clearly displays the real-time power value of the current main engine motor 22 in kilowatts (kW). The interface of the main engine motor operating parameter area also lists important parameters such as the current operating frequency (Hz), real-time speed (rpm) and output torque (Nm) of the main engine motor 22; the circular indicator light on the right intuitively displays the operating status of the main engine motor 22, which is convenient for operators to quickly determine whether the equipment is working properly.

[0063] The feeding motor operating parameters area focuses on the operating status of the feeding motor 33. The large number in the center shows the real-time frequency value (Hz) of the feeding motor 33, which is a key parameter for adjusting the material input rate. This area also contains the real-time capacity index (t / h) of the equipment and the energy consumption data (kWh / t) corresponding to the unit output, which is convenient for operators to evaluate the operating efficiency of the equipment; the status indicator on the right shows the current operating status of the feeding motor 33.

[0064] The grading motor operating parameter area (grading motor is the abbreviation of the grading wheel rotation drive motor) provides detailed information about the grading motor. The center number displays the real-time power value (kW) of the grading motor, and also lists the current value (A), operating frequency (Hz) and real-time speed (rpm) of the grading motor; the indicator light on the right shows the operating status of the grading motor, helping the operator monitor the working condition of the grading system.

[0065] The feed motor / host motor relationship setting area has a feed motor host motor association setting interface, which is a key part of realizing the motor association control unit. This area displays the currently selected association mode as "fixed ratio" and provides a setting button to enter the detailed parameter configuration interface. The "linkage status" is displayed as "on", indicating that the motor association control unit is activated. The automatic adjustment status is displayed as "off", indicating that the association control parameter automatic generation module is not currently enabled. Each setting button allows the operator to enter the corresponding setting interface.

[0066] The vibration monitoring data area uses circular dashboards to visually display the vibration of the equipment. The vibration value of the front bearing (corresponding to "Vibration 1 (large dial)", unit: mm / s) and the vibration value of the rear bearing (corresponding to "Vibration 2", unit: mm / s) are displayed in separate circular dashboards. These dashboards change color according to the vibration intensity, visually indicating whether the vibration is within the safe range, helping operators to detect potential problems in a timely manner.

[0067] The bearing temperature monitoring area also uses a circular instrument panel to display temperature data. The temperature value of the front bearing (corresponding to the "bearing (large plate)", unit: °C) and the temperature value of the rear bearing (corresponding to the "rear bearing", unit: °C) are clearly displayed, and the temperature status is indicated by color changes. This is crucial to prevent equipment damage caused by bearing overheating.

[0068] The host winding temperature monitoring area shows the temperature of each phase coil of the host motor 22. The U phase temperature (°C), V phase temperature (°C) and W phase temperature (°C) are displayed in separate circular instrument panels. The color change of the instrument panel indicates whether the coil temperature is within the safe range, which is particularly important to prevent the motor from overheating and damage.

[0069] The energy consumption and output statistics area provides cumulative data on equipment operation. The cumulative power consumption of the main motor 22 (55675.20 kWh), the cumulative power consumption of auxiliary equipment including the feeding motor 33 (25147.20 kWh), and the cumulative total production of the equipment (50.24 t) are clearly displayed, which is convenient for managers to evaluate the long-term operating efficiency and cost of the equipment.

[0070] The alarm and event record area uses a table to display the abnormal situation of the system. The table contains detailed information such as serial number, alarm type, event content, time, alarm content, response time, frequency of occurrence, sensor, etc. The interface provides an alarm confirmation button for operators to confirm the alarm information they have viewed; the history record button is used to view historical alarm and event records, which is convenient for analyzing equipment operation rules and problem patterns.

[0071] The page control area is located at the bottom of the interface and contains function buttons such as back, forward, home, and refresh. These control elements facilitate operators to quickly switch between different interfaces, improving the ease of use of the system. Through these navigation buttons, operators can easily access other functional interfaces of the system, such as detailed settings, historical data analysis, etc.

[0072] In the Feeder Motor / Host Motor Relationship Setting Area (Feeder Motor / Host Motor Relationship Setting Interface), in the "Relationship Mode" option, the operator can select "Fixed Ratio Mode" or "Load Response Mode". When "Fixed Ratio Mode" is selected, Figure 4As shown, a special secondary setting interface will pop up on the feeding motor and main motor association setting interface, which contains a frequency ratio slider controller, allowing the operator to directly set the proportional relationship between the feeding motor 33 frequency and the main motor 22 frequency. The ratio value range is usually 0.1-2.0, and the operator can adjust it by sliding the control bar or directly entering the precise value in the numeric input box. The current status information, such as the edge linear speed of the crushing disk (165m / s) and other parameters, will also be displayed below the secondary setting interface to help the operator make reasonable ratio settings with reference to the current operating status of the equipment. In fixed ratio mode, the controller 523 executes the fixed ratio control logic.

[0073] The process of the controller 523 executing the fixed ratio control logic is: first, the frequency ratio value (0.1-2.0) set by the user is received from the feeding motor host motor associated setting interface, and then the current operating frequency of the host motor 22 is collected in real time, and the target frequency of the feeding motor 33 is calculated based on the fixed algorithm (target frequency = current frequency of the host motor × frequency ratio value), and the calculation result is checked for a safety range limit (usually 0-60Hz), and the final frequency target value is sent to the feeding motor inverter 522, which performs frequency adjustment to control the speed of the feeding motor 33 and thus adjust the material feed rate. The whole process is executed in a fixed cycle (usually 100-500 milliseconds) to form a closed-loop control to ensure that when the frequency of the host motor 22 changes, the frequency of the feeding motor 33 can be adjusted synchronously according to the set ratio, and the operating conditions are fed back to the human-machine interface component for the operator to monitor.

[0074] The fixed ratio mode adopts a simple and direct control strategy, which linearly associates the frequency of the feeding motor 33 with the frequency of the main motor 22 through a fixed ratio relationship to ensure that the two always maintain the set ratio relationship. Because its control algorithm is concise and clear (feeding motor frequency = main motor frequency × ratio value), the system responds quickly and executes stably, and can quickly and synchronously adjust the speed of the feeding motor 33 when the frequency of the main motor 22 changes, so as to maintain the continuity and stability of material supply. This control mode has a small computing load and low hardware requirements for the controller 523. Even if it shares processing resources with the main control unit 53 in an integrated configuration mode, it can ensure efficient operation without affecting the execution efficiency of other functions of the system. At the same time, the parameter settings of this mode are simple and clear, which is easy for operators to understand and optimize, and reduces the complexity of operation and training costs. The fixed ratio mode is particularly suitable for production scenarios with stable material properties and little change in the difficulty of crushing, such as continuous processing of a single raw material or a mixture with a stable formula; when processing medium-hardness cereal raw materials (such as corn and wheat) or preparing medium-coarse powder products, the fixed ratio mode can provide sufficient control accuracy and stability. In the case of batch production of fixed specification products, operators only need to adjust the frequency ratio value based on experience or preset values ​​to keep the system running efficiently and stably for a long time, thereby improving operational convenience and production efficiency.

[0075] When "Load Response Mode" is selected, if Figure 5 As shown, a more complex secondary setting interface will pop up on the feed motor host motor association setting interface, which includes three key parameters: load response coefficient, maximum power limit and linear speed target. The load response coefficient (0.1-2.0) controls the response sensitivity of the feed motor 33 to the load change of the host motor 22. The larger the value, the more sensitive the response; the maximum power limit (200-300kW) sets the maximum power threshold allowed for the host motor 22 to prevent overload; the linear speed target (140-180m / s) sets the expected operating linear speed of the edge of the crushing disk. The operator can accurately adjust these parameters through the slider and the numerical input box. The motor association control unit will generate the associated control parameters based on these set values, and the controller 523 will execute the load response control logic.

[0076] The process of the controller 523 executing the load response control logic is: first receive three key setting parameters (load response coefficient, maximum power limit, linear speed target), calculate the target speed and frequency of the main motor 22 according to the crushing disk diameter and linear speed target; start the main motor 22 first in the startup phase, and then start the feeding motor 33 after it reaches the set speed and is in an unloaded state; in the operation phase, ensure the constant linear speed of the edge of the crushing disk (such as a constant linear speed target of 165m / s) through closed-loop control, and dynamically adjust the frequency of the feeding motor 33 according to the load state of the main motor 22. The whole process forms an adaptive control system, which can automatically adjust the material feed rate according to the actual working conditions, ensure that the vertical ultrafine pulverizer is close to the maximum production capacity while avoiding overload, and achieve efficient and stable operation. The load response coefficient is the core parameter in the load response control logic, and its significance lies in adjusting the response sensitivity and intensity of the feeding motor 33 to the load change of the main motor 22. A higher coefficient value (1.5-2.0) makes the system respond more quickly and sensitively, and can make larger adjustments to slight load changes of the main motor 22. It is suitable for processing materials with variable properties or scenarios requiring precise power control; a medium coefficient value (0.8-1.5) provides a balanced response characteristic, which can adapt to load changes in a timely manner without causing excessive adjustments, and is suitable for most conventional production situations; a lower coefficient value (0.1-0.8) makes the system respond more gently and stably. Even if the load of the main motor 22 fluctuates greatly, the feeding adjustment is relatively slow and gradual, which is suitable for occasions requiring stable feeding or long-term continuous operation.

[0077] In addition, under different load conditions, the controller 523 can adopt different feeding motor 33 control strategies, for example: in the no-load state (the main engine motor power is less than 30% of the maximum power limit), when there is little material in the crushing chamber, the controller 523 can gradually increase the feeding motor 33 frequency, increase the feed amount, and raise the system load to a more efficient working range; in the light load state (the main engine motor power is 30%-70% of the maximum power limit), the controller 523 will moderately increase the feeding motor 33 frequency to improve production efficiency, but the increase is relatively mild to ensure a smooth transition of the equipment. ; Medium load state (the main engine motor power is 70%-90% of the maximum power limit), when the equipment is close to the ideal working point, the controller 523 will make slight adjustments to maintain the main engine motor 22 in the optimal working range; heavy load state (the main engine motor power is 90%-98% of the maximum power limit), the controller 523 will reduce the frequency of the feeding motor 33, reduce the feed amount, and prevent the equipment from overloading; overload risk state (power>98% of the maximum power limit), the controller 523 will significantly reduce the frequency of the feeding motor 33, quickly reduce material input, and protect the safety of the equipment.

[0078] The outstanding advantage of the load response mode is that it can automatically adapt to the load changes of the host motor, so that the equipment can maintain an optimal working range close to but not exceeding the maximum power limit, while ensuring a constant linear speed at the edge of the crushing disk to maximize production capacity.

[0079] The function of the fixed ratio mode is equivalent to the first manual generation module of the associated control parameters of the motor associated control unit. The feeding motor and host motor associated setting interface is provided with an on / off option of the first manual generation module of the associated control parameters. When the first manual generation module of the associated control parameters is on, the feeding motor and host motor associated setting interface can support the user to set the frequency ratio of the feeding motor and the host motor. The first manual generation module of the associated control parameters generates the associated control parameters according to the frequency ratio value set by the user and transmits it to the controller to execute the corresponding associated control logic.

[0080] The function of the load response mode is equivalent to the second manual generation module of the associated control parameters of the motor associated control unit. The feeding motor and host motor associated setting interface is provided with an on / off option of the second manual generation module of the associated control parameters. When the second manual generation module of the associated control parameters is on, the feeding motor and host motor associated setting interface can support the user to set the load response coefficient, maximum power limit and speed target. The second manual generation module of the associated control parameters generates the associated control parameters according to the load response coefficient, maximum power limit and speed target set by the user and transmits them to the controller to execute the corresponding associated control logic. The load response coefficient refers to the response sensitivity of the feeding motor to the load change of the host motor. The maximum power limit refers to the highest power threshold allowed to be reached by the host motor during operation. The speed target refers to the target value of the parameter used to evaluate the operating speed of the rotor of the industrial crusher.

[0081] In addition, the "linked state" switch in the feeding motor / main motor relationship setting area (feeding motor and main motor association setting interface) controls the activation and deactivation of the motor association control function. When set to the "on" state, the controller 523 will execute the corresponding control logic according to the association control parameters to achieve the coordinated operation of the main motor 22 and the feeding motor 33; when set to "off", the main motor 22 and the feeding motor 33 will operate independently and no longer maintain the set matching relationship.

[0082] The "automatic adjustment" switch in the feeding motor / host motor relationship setting area (feeding motor host motor association setting interface) controls whether the motor association control unit turns on or off the association control parameter automatic generation module. When the association control parameter automatic generation module is turned on, the association control parameter automatic generation module automatically generates the association control parameters and transmits them to the controller 523 to execute the corresponding association control logic.

[0083] Specifically, when the associated control parameter automatic generation module is turned on, the feeding motor host motor associated setting interface can support the user to set the conditions for automatically generating associated control parameters, such as Figure 6 As shown, the conditions include one or more of the raw material type, raw material moisture content, raw material hardness, raw material particle size, and target particle size; the associated control parameter automatic generation module automatically generates corresponding associated control parameters according to the conditions and transmits them to the controller 523 to execute corresponding associated control logic.

[0084] The associated control parameter automatic generation module essentially uses a preset expert knowledge base and process database, based on the conditions set by the operator in the feeding motor and main motor associated setting interface (including one or more of the raw material type, raw material moisture content, raw material hardness, raw material particle size, and target particle size), to automatically calculate and generate the optimal associated control parameters (such as the frequency ratio value in the fixed ratio mode, or the load response coefficient, maximum power limit and linear speed target in the load response mode), and transmits it to the controller 523 to execute the corresponding associated control logic, so that the vertical ultrafine pulverizer can automatically obtain the most suitable control parameters under different raw materials and process conditions, and realize the intelligent matching relationship between the main motor 22 and the feeding motor 33, without the operator having to manually adjust the parameters based on experience.

[0085] More specifically, if Figure 6As shown, the associated control parameter automatic generation module provides comprehensive condition setting options through the "feed raw material characteristic setting" pop-up window, including: feed raw material categories (such as the "cereal raw materials" selected in the figure), specific raw material categories (such as the "corn" selected in the figure), raw material moisture content (set to 12.0% through the slider), raw material hardness (such as the "medium (corn, wheat)" selected in the figure), initial particle size (set to 3.0mm through the slider), target particle size (such as the "medium powder (0.5-1mm)" selected in the figure) and processing purpose (such as the "poultry feed" selected in the figure) and other key parameters; the associated control parameter automatic generation module calculates and generates the optimal associated control parameters based on these setting conditions, combined with the built-in expert knowledge base and process database. The operator can trigger the regeneration of parameters through the "recalculate" button, and apply the generated parameters to the associated control parameter automatic generation module through the "save settings" button, so that the vertical ultrafine pulverizer can automatically adopt the most appropriate control strategy for specific raw materials and processing requirements, and realize the intelligent and precise matching between the main motor 22 and the feeding motor 33.

[0086] The significance of the automatic generation module of associated control parameters lies in: significantly reducing the technical threshold of operators, so that novices can quickly obtain control effects close to the expert experience level; greatly shortening the parameter debugging time of new material processing and improving production switching efficiency; ensuring that the vertical ultrafine pulverizer always maintains an efficient and stable operation state under complex and changing production conditions; realizing the digitalization and standardized management of the pulverization process by integrating the pulverization process knowledge accumulated over a long period of time; automatically matching the optimal operating parameters for different raw material characteristics (such as raw material hardness and moisture content) to avoid equipment damage and energy waste caused by improper parameter settings; providing unified control standards for operators with different experience levels to reduce the impact of human factors on product quality.

[0087] For the above-mentioned vertical superfine pulverizer of the present invention, the load response mode can be used for equipment debugging. Taking the load response coefficient as 0.5, the maximum power limit as 250kW, and the linear speed target as 165m / s as an example, at this time, the working process of the vertical superfine pulverizer is: when the vertical superfine pulverizer is just started, the vertical superfine pulverizer is in a no-load state, and the main motor 22 only needs to overcome the inertial resistance of the crushing disk 11 and the crushing disk rotation drive mechanism 2, and the current is maintained at a no-load level. After the material begins to be transported to the crushing chamber 1 through the feeding mechanism 3, the crushing action between the hammer head 12 and the ring gear 13 exerts impact and shear force on the material, and the load of the vertical superfine pulverizer increases accordingly, and the current of the main motor 22 gradually increases, but the control system will keep the speed of the crushing disk 11 constant through frequency regulation to ensure that the edge linear speed of the crushing disk 11 is stable at 165m / s. As the feed amount continues to increase, the current of the main motor 22 continues to rise until it reaches the current value corresponding to the maximum power limit of 250kW of the main motor 22. After that, the rotation speed of the crushing disk 11 remains stable, and the edge linear speed is maintained at 165m / s, reaching the maximum production capacity of the equipment.

[0088] Fish feed raw materials are used during the equipment debugging process. The fish feed raw materials include fish meal (30wt%-40wt%), soybean meal (15wt%-25wt%), wheat flour or corn flour (20wt%-30wt%), fish oil (5wt%-10%) and conventional fish feed additives (3wt%-5wt%). The same formula of fish feed raw materials is used in each experiment during the equipment debugging process. The gap 14 of the hammer teeth in each experiment is taken as the conventional 5mm, and the spacing between adjacent hammer heads is taken as 217mm. The edge linear speed of the crushing disk and the rated power of the crushing disk rotation drive mechanism are adjusted in different experiments, and then the maximum production capacity, unit energy consumption and bearing operation are calculated, and finally the comprehensive score of each experimental case is given. Fixed factors: crushing disk diameter 2000mm; variable factors: edge linear speed (m / s), take 155, 160, 165, 170, 175 five levels; rated power (kW), take 210, 230, 250, 270, 290 five levels. The experimental conditions and comprehensive scores of each experimental case are shown in Table 2. The edge line speed effect analysis (fixed power 250kW) is shown in Table 3. The power effect analysis (fixed edge line speed 165m / s) is shown in Table 4.

[0089] The comprehensive scoring method is based on a multi-parameter weighted evaluation system, which divides the performance indicators of the vertical superfine pulverizer into four key dimensions: output (accounting for 30%) reflects production efficiency, unit energy consumption efficiency (accounting for 20%) reflects economy, bearing temperature rise (accounting for 40%) evaluates reliability and safety, and bearing life prediction (accounting for 10%) considers the long-term use value of the equipment. After normalization, each indicator is superimposed by weight to form an evaluation system of 0-100 points, which fully reflects the comprehensive balance between production efficiency, economy and reliability of the equipment, and especially emphasizes the decisive influence of the bearing system as a key component on the performance of the whole machine. Among them, the bearing temperature rise refers to the increase in the temperature of the bearing under working conditions relative to the ambient temperature, in degrees Celsius. In each experiment, if the vibration value of the front bearing and the vibration value of the rear bearing exceed the standard, the vertical superfine pulverizer will automatically shut down.

[0090]

[0091]

[0092]

[0093] The above experimental results show that: 1) Critical transition of linear speed: When the linear speed of the edge of the crushing disk increases from 155m / s to 160m / s, the score jumps from 81 points to 94 points, an increase of 16.0%, indicating that 160m / s is the clear lower limit of performance leap; when the linear speed of the edge of the crushing disk increases from 170m / s to 175m / s, the score drops sharply from 93 points to 82 points, a decrease of 11.8%, indicating that 170m / s is the clear upper limit of safety performance.

[0094] 2) Power critical transition: From 210kW to 230kW, the score increased from 84 points to 92 points, an increase of 9.5%, indicating that 230kW is the lower limit for effectively utilizing the equipment capacity; from 270kW to 290kW, the score decreased from 94 points to 87 points, a decrease of 7.4%, indicating that 270kW is the upper limit for economical and efficient operation.

[0095] 3) High-performance platform within parameter range: The average score of test points (7-9, 12-14, 17-19) within the range of 160-170m / s linear speed and 230-270kW power was 93.1 points; the average score of test points outside the range was only 80.2 points, a gap of 12.9 points, demonstrating the outstanding advantages within the parameter range.

[0096] Through equipment debugging, it was determined that there are significant performance advantages within the parameter range of "crushing disk diameter 1950mm-2050mm, edge linear speed 160m / s-170m / s, rated power 230kW-270kW", which is particularly suitable for the vertical ultrafine pulverizer design in which the upper bearing system 212 adopts deep groove ball bearings with specifications of 6234 or 6334, and the lower bearing system 213 adopts deep groove ball bearings with specifications of 6234 or 6232 or 6334 or 6332.

[0097] The above is a description of the relevant contents of the present invention. A person skilled in the art will be able to implement the present invention based on these descriptions. Based on the above contents of this specification, all other embodiments obtained by a person skilled in the art without making creative work should fall within the scope of the present invention.

Claims

1. Intelligent control system for industrial pulverizer, characterized by: include: The remote terminal unit comprises a field information collection interface and an information conditioning device, wherein the field information collection interface is connected to an operation monitoring sensor of the industrial pulverizer to collect the operation status of the industrial pulverizer, and the information conditioning device is used to perform information conditioning processing on the information of the operation status and transmit the data after the information conditioning processing to the main control unit; The motor control center unit is connected to the main control unit for communication and unified control of the operation of the main motor and the feeding motor in the industrial pulverizer; A main control unit, used to execute a control program and send control instructions to the motor control center unit, receive and process data from the remote terminal unit and feedback from the motor control center unit, and associate a human-machine interface component, the human-machine interface component is used to display the operation status of the industrial pulverizer and receive operation instructions; And a motor association control unit is used to perform association control on the main motor and the feeding motor, so that the operating parameters of the main motor and the feeding motor maintain a set matching relationship.

2. The intelligent control system for an industrial pulverizer according to claim 1, characterized in that: The motor association control unit includes a controller and a feeding motor host motor association setting interface arranged in the human-machine interface component; the controller is respectively communicated with the host motor frequency converter and the feeding motor frequency converter in the motor control center unit, the host motor frequency converter is used to control the operating parameters of the host motor, and the feeding motor frequency converter is used to control the operating parameters of the feeding motor, and the controller adjusts the control parameters of the host motor frequency converter and the feeding motor frequency converter in real time to keep the operating parameters of the host motor and the operating parameters of the feeding motor in a set matching relationship; the feeding motor host motor association setting interface is used to receive the associated control parameters input by the user and transmit them to the controller, and the controller executes the corresponding associated control logic according to the associated control parameters.

3. The intelligent control system for an industrial pulverizer according to claim 2, characterized in that: The motor association control unit includes an association control parameter automatic generation module. The feeding motor host motor association setting interface is provided with an on / off option of the association control parameter automatic generation module. When the association control parameter automatic generation module is in the on state, the association control parameter automatic generation module automatically generates the association control parameters and transmits them to the controller to execute the corresponding association control logic.

4. The intelligent control system for an industrial pulverizer according to claim 3, characterized in that: When the associated control parameter automatic generation module is in the turned-on state, the feeding motor and host motor associated setting interface can support the user in setting the conditions for automatically generating associated control parameters, wherein the conditions include one or more of the raw material type, raw material moisture content, raw material hardness, raw material particle size, and target particle size; the associated control parameter automatic generation module automatically generates corresponding associated control parameters according to the conditions and transmits them to the controller to execute corresponding associated control logic.

5. The intelligent control system for an industrial pulverizer according to claim 2, characterized in that: The motor association control unit includes a first manual generation module for associated control parameters, and the feeding motor host motor association setting interface is provided with an on / off option for the first manual generation module for associated control parameters. When the first manual generation module for associated control parameters is on, the feeding motor host motor association setting interface can support the user to set the frequency ratio of the feeding motor and the host motor. The first manual generation module for associated control parameters generates associated control parameters according to the frequency ratio value set by the user and transmits it to the controller to execute the corresponding associated control logic; and / or, the motor association control unit includes a second manual generation module for associated control parameters, and the feeding motor host motor association setting interface is provided with the associated control parameters. The on / off option of the second manual generation module, when the second manual generation module of the associated control parameters is on, the feeding motor and the host motor associated setting interface can support the user to set the load response coefficient, the maximum power limit and the speed target. The second manual generation module of the associated control parameters generates the associated control parameters according to the load response coefficient, the maximum power limit and the speed target set by the user and transmits them to the controller to execute the corresponding associated control logic. The load response coefficient refers to the response sensitivity of the feeding motor to the load change of the host motor. The maximum power limit refers to the highest power threshold allowed to be reached by the host motor during operation. The speed target refers to the target value of the parameter used to evaluate the operating speed of the rotor of the industrial crusher.

6. The intelligent control system for an industrial pulverizer according to claim 2, characterized in that: The configuration mode of the main control unit and the controller is any one of the following: a) integrated configuration mode, that is, the main control unit and the controller are integrated into the same physical unit, share processing resources and the control function is performed by the same processor; b) independent configuration mode, that is, the main control unit and the controller are independent physical units, each with independent processors and resources.

7. The intelligent control system for an industrial pulverizer according to claim 1, characterized in that: It also includes a network switch, which is connected to the host computer system through the information transmission network on the one hand and to the main control unit on the other hand, so that the host computer system can remotely monitor the operation of the industrial crusher and collect historical data; and / or, it also includes an emergency control unit, which is used to provide independent control functions in abnormal or emergency situations of the industrial crusher, ensuring that safe control of the industrial crusher can still be achieved when the main control unit fails.

8. The intelligent control system for an industrial pulverizer according to any one of claims 1 to 7, characterized in that: The industrial pulverizer is specifically an ultrafine pulverizer for feed processing, which includes a pulverizing chamber, a pulverizing disk located in the pulverizing chamber, a pulverizing disk rotation drive mechanism connected to the pulverizing disk, and a feeding mechanism, a discharging structure, and an air intake structure respectively connected to the pulverizing chamber. A pulverizing structure is provided between the edge of the pulverizing disk and the area on the inner wall of the pulverizing chamber corresponding to the edge. The pulverizing structure includes hammers arranged at circumferential intervals at the edge of the pulverizing disk and a gear ring arranged in the area on the inner wall of the pulverizing chamber corresponding to the edge. The hammer tooth gap formed between the hammer and the gear ring allows the pulverizing disk to pass through the pulverizing chamber during operation. The pulverizing disc rotation drive mechanism drives the pulverizing disc to rotate in the pulverizing chamber, so that the material transported to the pulverizing structure through the feeding mechanism is pulverized by the pulverizing structure. The air intake structure is used to introduce a flowing airflow into the pulverizing chamber, and the discharging structure is used to discharge the airflow introduced into the pulverizing chamber from the air intake structure and the pulverized material out of the ultrafine pulverizer. The main engine motor is the power source of the pulverizing disc rotation drive mechanism, and the main engine motor is connected to the pulverizing disc through a transmission shaft. The feeding motor is the power source of the feeding mechanism. Moreover, the operating conditions include the vibration value of the above-mentioned transmission shaft and the temperature value of the bearing matching the transmission shaft.

9. The intelligent control system for an industrial pulverizer according to claim 8, characterized in that: The ultrafine pulverizer is a vertical ultrafine pulverizer. The rotation centerline of the pulverizing disk is vertically arranged during the rotation. The air intake structure is used to introduce an upward airflow into the lower part of the pulverizing chamber. The discharging structure is located at the upper part of the pulverizing chamber and is used to discharge the airflow introduced into the pulverizing chamber from the air intake structure and the pulverized material out of the vertical ultrafine pulverizer.

10. The intelligent control system for an industrial pulverizer according to claim 9, characterized in that: The diameter of the crushing disk is 1950mm-2050mm; when the motor-related control unit includes a second manual generation module for related control parameters, an on / off option of the second manual generation module for related control parameters is provided in the feeding motor and the main motor related setting interface. When the second manual generation module for related control parameters is on, the feeding motor and the main motor related setting interface can support the user to set the load response coefficient, the maximum power limit and the speed target. The second manual generation module for related control parameters generates related control parameters according to the load response coefficient, the maximum power limit and the speed target set by the user and transmits them to the controller to execute the corresponding related control logic. The load response coefficient refers to the response sensitivity of the feeding motor to the load change of the main motor. The maximum power limit refers to the maximum power threshold allowed to be reached by the main motor during operation. When the speed target refers to the target value of the parameter used to evaluate the operating speed of the rotor of the industrial crusher, the speed target is specifically the edge linear speed of the crushing disk when it is working and is set to 160m / s-170m / s, and the maximum power limit is set to 230kW-270kW.

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