CN109806963B

CN109806963B - Milling control method based on stable discharging control

Info

Publication number: CN109806963B
Application number: CN201910208008.XA
Authority: CN
Inventors: 王翔; 刘艳祥; 程相阳; 张展; 王春朋
Original assignee: Zhengzhou Yuxin Electrical Control Technology Co ltd
Current assignee: Zhengzhou Yuxin Electrical Control Technology Co ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2021-03-23
Anticipated expiration: 2039-03-19
Also published as: CN109806963A

Abstract

The invention provides a milling control method based on stable discharging control, which comprises the following steps: s001, setting the range of a normal driving current value A according to a current sampling value of a driving motor in the normal grinding process, so that A is more than or equal to A1 and less than or equal to A2; s002, collecting material level information, and if the material level is smaller than a normal material level value, controlling the feeding speed of the feeding system to reduce by delta V; s003, collecting a driving current value An of a driving motor; s004, judging whether the driving current value An is equal to A1; s005, if not, repeating the step S002 to the step S004, and if yes, maintaining the feeding speed. The milling control method based on stable discharging control has the advantages of scientific design, strong practicability, simplicity, convenience and strong stability of the production process.

Description

Milling control method based on stable discharging control

Technical Field

The invention relates to the field of grain processing, in particular to a milling control method based on stable discharging control.

Background

The flour mill is the core equipment of a flour mill, and the quality of the performance of the flour mill directly influences the quality and yield of produced flour. The feeding system of the flour mill is an important component, and whether the flour mill is uniformly fed or not has great influence on the quality of milled flour. The supplied material detection device of the feeding system of the current mainstream flour mill is mainly completed by mechanically detecting gravity, and the flour milling process comprises the following steps that a conveying mechanism inputs materials into the feeding system, the supplied material detection device of the feeding system detects the supplied materials, when the supplied materials reach a certain weight, the supplied materials have a certain pressure on the supplied material detection device, and the feeding system starts feeding and the flour mill starts milling; when the material reduces the weight and reduces, supplied materials detection device bounces, and the feed system stops feeding and the milling machine stops milling powder. Under the condition of uneven incoming material and slow time, the starting, stopping and stopping of the feeding system and the flour mill are caused, the quality of ground flour is greatly influenced, and unqualified products are easy to appear.

In order to solve the above problems, people are always seeking an ideal technical solution.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the milling control method based on stable discharging control, which has the advantages of scientific design, strong practicability, simplicity, convenience and strong production process stability.

In order to achieve the purpose, the invention adopts the technical scheme that: a milling control method based on smooth discharging control comprises the following steps: s001, setting the range of a normal driving current value A according to a current sampling value of a driving motor in the normal grinding process, so that A is more than or equal to A1 and less than or equal to A2; s002, collecting material level information, and if the material level is smaller than a normal material level value, controlling the feeding speed of the feeding system to reduce by delta V; s003, collecting a driving current value An of a driving motor; s004, judging whether the driving current value An is equal to A1; s005, if not, repeating the step S002 to the step S004, and if yes, maintaining the feeding speed.

Based on the above, the method further comprises the following steps: s006, controlling the feeding speed of the feeding system to increase delta V according to the information that the material level is recovered to be normal, and meanwhile, judging whether the acquired driving current value An is equal to A2; s007, if not, repeating the step S006, and if so, maintaining the feeding speed.

Based on the above, in step S004, if the drive current value An is smaller than a1, it is determined that feeding is interrupted.

Compared with the prior art, the feeding device has outstanding substantive characteristics and remarkable progress, and particularly, the feeding device adjusts the feeding speed by detecting the material level and the current of the driving motor, and gradually adjusts the feeding speed to the minimum feeding speed according to the magnitude of the driving current so as to ensure stable feeding.

Drawings

FIG. 1 is a schematic block diagram of the electrical structure of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

As shown in fig. 1, a milling control method based on smooth discharge control includes the following steps: s001, setting the range of a normal driving current value A according to a current sampling value of a driving motor in the normal grinding process, so that A is more than or equal to A1 and less than or equal to A2; s002, collecting material level information, and if the material level is smaller than a normal material level value, controlling the feeding speed of the feeding system to reduce by delta V; s003, collecting a driving current value An of a driving motor; s004, judging whether the driving current value An is equal to A1; s005, if not, repeating the step S002 to the step S004, and if yes, maintaining the feeding speed. S006, controlling the feeding speed of the feeding system to increase delta V according to the information that the material level is recovered to be normal, and meanwhile, judging whether the acquired driving current value An is equal to A2; s007, if not, repeating the step S006, and if so, maintaining the feeding speed.

The roller of milling machine closes the floodgate and carries out the crocus when feed system feed, because two rollers do not have when material idle running, the roller can the themogenesis damage, therefore feed system stop feed time milling machine's roller need the separating brake, stop the crocus. Because the flow velocity and the flow quantity of the grain are not easy to detect, when the feeding is not stable due to the instability of the supplied materials, the flour mill is switched on and off frequently, and the grain is not milled sufficiently due to the frequent switching on and off, so that the flour quality is unqualified. In practice, the driving motor drives the roller to rotate for grinding, the feeding amount is large, namely the power of the driving motor is high when the material is much, the working current is large, the feeding amount is small, namely the power of the driving motor is low when the material is little, the working current is small, and namely the driving current of the driving motor has a normal change range during normal feeding; when the working current of the driving motor is less than a certain value, the roller is opened and idles. When the material quantity is less than a normal material level value according to the detection information of the material sensor, the controller controls the feeding system to reduce the feeding speed through the frequency converter, corrects the feeding speed according to the detection information of the current sensor, and prevents the flour mill from stopping working while keeping constant-speed feeding after gradually reducing the feeding speed to the minimum feeding speed through a multi-section small-amplitude speed reduction mode; when the material quantity returns to normal, the controller controls the feeding system to increase the feeding speed through the frequency converter, and meanwhile, the feeding speed is corrected according to the detection information of the current sensor, and the normal feeding speed is gradually restored. In this embodiment, the controller is a PLC controller. When the material level is low, adopt the little width of multistage deceleration mode, reduce feed speed, the at the same time current value of monitoring driving motor guarantees the at the uniform velocity feed, avoids interrupting the feed and causes the frequent divide-shut brake of roll, improves the crocus quality. If the material level is normal, the feeding speed is gradually recovered to the maximum feeding speed, namely, the driving motor is enabled to work at the maximum driving current value, and the production efficiency is ensured.

Preferably, in step S004, if the driving current value An is smaller than a1, it is determined that feeding is interrupted. In practice, material level information, driving current information and feeding interruption information are recorded through an upper computer, monitoring and analysis are facilitated, and alarming reminding is further carried out after feeding interruption.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. The milling control method based on stable discharging control is characterized by comprising the following steps of:

s001, setting the range of a normal driving current value A according to a current sampling value of a driving motor in the normal grinding process, so that A is more than or equal to A1 and less than or equal to A2;

s002, collecting material level information, and if the material level is smaller than a normal material level value, controlling the feeding speed of the feeding system to reduce by delta V;

s003, collecting a driving current value An of a driving motor;

s004, judging whether the driving current value An is equal to A1;

s005, if not, repeating the step S002 to the step S004, and if yes, maintaining the feeding speed.

2. The milling control method based on discharging smooth control as claimed in claim 1, further comprising the steps of:

s006, controlling the feeding speed of the feeding system to increase delta V according to the information that the material level is recovered to be normal, and meanwhile, judging whether the acquired driving current value An is equal to A2;

s007, if not, repeating the step S006, and if so, maintaining the feeding speed.

3. The milling control method based on discharging smooth control as claimed in claim 1, characterized in that: in step S004, if the drive current value An is smaller than a1, it is determined that feeding is interrupted.