CN109988904B

CN109988904B - Water adding amount adjusting method and device for pelletizer

Info

Publication number: CN109988904B
Application number: CN201910351239.6A
Authority: CN
Inventors: 邱立运; 周斌
Original assignee: Hunan Changtian Automation Engineering Co ltd
Current assignee: Hunan Changtian Automation Engineering Co ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2021-03-30
Anticipated expiration: 2039-04-28
Also published as: CN109988904A

Abstract

The invention discloses a water adding amount adjusting method and a water adding amount adjusting device for a pelletizer, wherein the method comprises the following steps: acquiring a first yield change value and a first proportion of a first green ball generated in a balling area in each detection period in the current target time period; if each first productivity change value is greater than a first preset maximum change value and each first proportion is greater than a first preset maximum proportion, adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude; after a second preset time interval, if a first updated productivity change value of the first green ball is generated in each detection period in the current target time period and is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value, the first updated proportion is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, and the pelletizer is controlled to add water at the current water adding amount. The method adjusts the water adding amount of the pelletizer according to the actual generation condition of the green pellets, and the adjustment accuracy is higher.

Description

Water adding amount adjusting method and device for pelletizer

Technical Field

The invention relates to the technical field of pellet production, in particular to a water adding amount adjusting method and device for a pelletizer.

Background

At present, the pellet roasting process mainly comprises a shaft furnace method, a belt type roasting machine method and a grate-rotary kiln method. In China, a grate-rotary kiln method is adopted in an iron ore concentrate pellet production line mostly, wherein a pelletizing procedure is an important procedure of the iron ore concentrate pellet production line.

The pelletizer is a core production device of a pelletizing process, for example, a disc pelletizer and a cylinder pelletizer. In the production line of pellets of medium and small scale, disk pelletizer is used mostly. When the pelletizer works, materials move along different tracks in the pelletizer respectively to form green pellets with different diameters, and the green pellets are discharged from the pelletizer after reaching certain strength and fall into a subsequent green pellet bearing device. The balling rate of the pelletizer is a key parameter of the balling process, and the higher the balling rate is on the premise of ensuring the quality of green pellets, the higher the yield of the green pellets is.

In the working process of the pelletizer, the water adding amount added into the pelletizer is an important factor influencing the pelletizing rate of the green pellets, and in order to improve the pelletizing rate of the pelletizer, the accurate adjustment of the water adding amount of the pelletizer is very important according to the actual production condition of the green pellets. In the prior art, the water adding amount of a pelletizer is usually adjusted according to adjustment information input by field operators according to production experience, the adjustment accuracy is poor, the pelletizing rate fluctuation of green pellets is large, and the yield and the quality of the green pellets are unstable.

Therefore, the existing water adding amount adjusting method for the pelletizer has poor accuracy of water adding amount adjustment, so that the pelletizing rate fluctuation of green pellets is large, and the yield and the quality of the green pellets are unstable.

Disclosure of Invention

The invention provides a water adding amount adjusting method and device for a pelletizer, and aims to solve the problems that the accuracy of water adding amount adjustment is poor, the pelletizing rate of green pellets fluctuates greatly, and the yield and the quality of the green pellets are unstable in the existing water adding amount adjusting method for the pelletizer.

In a first aspect, the present invention provides a water addition amount adjusting method for a pelletizer, comprising: acquiring a first yield change value and a first proportion of a first green ball generated in a balling area of a pelletizer in each detection period in a current target time period; the current target time period is a time period with the termination time as the current time and the duration as a first preset time; if each first productivity change value is larger than a first preset maximum change value and each first proportion is larger than a first preset maximum proportion, starting to adjust the water adding amount of the pelletizer; adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude; after a second preset time interval, acquiring a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period; and if the first updating production rate change value is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value, and the first updating proportion is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

Further, the water adding amount adjusting method also comprises the following steps: and if a first updated production rate change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated production rate change value of the first green pellets generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water by the current water adding amount.

Further, the water adding amount adjusting method also comprises the following steps: if a first production rate change value which is less than or equal to the first preset maximum change value exists and/or a first proportion which is less than or equal to the first preset maximum proportion exists, acquiring a second production rate change value and a second proportion for generating a second green ball in the balling area in each detection period in the current target time period; if each second productivity change value is larger than a second preset maximum change value and each second proportion is larger than a second preset maximum proportion, starting to adjust the water adding amount of the pelletizer; adjusting the current water adding amount of the pelletizer to a second preset adjustment range; after a third preset time interval, acquiring a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period; and if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

Further, the water adding amount adjusting method also comprises the following steps: and if a second updated productivity change value larger than the second preset maximum change value exists and/or a second updated proportion larger than the second preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer to a second preset adjustment amplitude, and the subsequent steps until the second updated productivity change value of the second green pellets generated in the pelletizing area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and controlling the pelletizer to add water according to the current water adding amount when the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion.

Further, the water adding amount adjusting method also comprises the following steps: if there is a second production rate change value which is less than or equal to the second preset maximum change value and/or there is a second proportion which is less than or equal to the second preset maximum proportion, the current water addition amount adjustment process is ended.

Further, the process of obtaining the first yield variation value and the first proportion of the first green ball generated in the balling area of the pelletizer in each detection period in the current target time period specifically includes: in each detection period in the current target time period, acquiring a first number of first green balls generated in the ball forming area in a first detection time period, a second number of the first green balls generated in the ball forming area in a second detection time period, a third number of the first green balls generated in the ball forming area in a third detection time period and a fourth number of molded green balls; wherein the ending time of the first detection time period is earlier than the starting time of the second detection time period; the duration of the first detection time period and the duration of the second detection time period are both target durations; the termination time of the third detection time period is the current time; generating a first yield variation value of a first green ball generated in the balling area in each detection period according to the first quantity, the second quantity and the target duration corresponding to each detection period; and generating a first proportion of the first green balls generated in the balling area in the detection period according to the third quantity and the fourth quantity corresponding to each detection period.

Further, the process of obtaining, in each detection cycle in the current target time period, a first number of the first green balls generated in the goal forming region in the first detection time period, a second number of the first green balls generated in the goal forming region in the second detection time period, a third number of the first green balls generated in the goal forming region in the third detection time period, and a fourth number of the molded green balls includes: acquiring images of the balling area respectively generated in each detection period, a first detection time period, a second detection time period and a third detection time period in the current target time period; and acquiring a first quantity of the first green balls generated in the ball forming area in a first detection time period, a second quantity of the first green balls generated in the ball forming area in a second detection time period, a third quantity of the first green balls generated in the ball forming area in a third detection time period and a fourth quantity of the molded green balls in the detection period according to the image corresponding to each detection period.

In a second aspect, the present invention also provides a water addition amount adjusting apparatus for a pelletizer, comprising: the first obtaining module is used for obtaining a first yield change value and a first proportion of a first green ball generated in a balling area of the pelletizer in each detection period in the current target time period; the current target time period is a time period with the termination time as the current time and the duration as a first preset time; the first processing module is used for adjusting the water adding amount of the pelletizer if each first productivity change value is larger than a first preset maximum change value and each first proportion is larger than a first preset maximum proportion; the second processing module is used for adjusting the current water adding amount of the pelletizer to a first preset adjusting range; the second obtaining module is used for obtaining a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period at intervals of a second preset time length; and the third processing module is used for controlling the pelletizer to add water according to the current water adding amount if the first updating productivity change value is greater than or equal to a first preset minimum change value and is less than or equal to a first preset maximum change value, and the first updating proportion is greater than or equal to a first preset minimum proportion and is less than or equal to a first preset maximum proportion.

Further, this water feeding amount adjusting device still includes: a fourth processing module to: and if a first updated production rate change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated production rate change value of the first green pellets generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water by the current water adding amount.

Further, this water feeding amount adjusting device still includes: a third obtaining module, configured to obtain a second productivity change value and a second proportion for generating a second green ball in the balling area in each detection cycle in the current target time period if there is a first productivity change value smaller than or equal to the first preset maximum change value and/or there is a first proportion smaller than or equal to the first preset maximum proportion; the fifth processing module is used for adjusting the water adding amount of the pelletizer if each second productivity change value is larger than a second preset maximum change value and each second proportion is larger than a second preset maximum proportion; the sixth processing module is used for adjusting the current water adding amount of the pelletizer to a second preset adjusting amplitude; a fourth obtaining module, configured to obtain, at an interval of a third preset time, a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period; and the seventh processing module is used for controlling the pelletizer to add water according to the current water adding amount if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion.

Further, this water feeding amount adjusting device still includes: an eighth processing module to: and if a second updated productivity change value larger than the second preset maximum change value exists and/or a second updated proportion larger than the second preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer to a second preset adjustment amplitude, and the subsequent steps until the second updated productivity change value of the second green pellets generated in the pelletizing area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and controlling the pelletizer to add water according to the current water adding amount when the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion.

Further, this water feeding amount adjusting device still includes: a ninth processing module for ending the current water addition amount adjustment process if there is a second production rate variation value less than or equal to the second preset maximum variation value and/or a second proportion less than or equal to the second preset maximum proportion.

Further, the first obtaining module is specifically configured to: in each detection period in the current target time period, acquiring a first number of first green balls generated in the ball forming area in a first detection time period, a second number of the first green balls generated in the ball forming area in a second detection time period, a third number of the first green balls generated in the ball forming area in a third detection time period and a fourth number of molded green balls; wherein the ending time of the first detection time period is earlier than the starting time of the second detection time period; the duration of the first detection time period and the duration of the second detection time period are both target durations; the termination time of the third detection time period is the current time; generating a first yield variation value of a first green ball generated in the balling area in each detection period according to the first quantity, the second quantity and the target duration corresponding to each detection period; and generating a first proportion of the first green balls generated in the balling area in the detection period according to the third quantity and the fourth quantity corresponding to each detection period.

Further, the first obtaining module is configured to, in each detection cycle in the current target time period, obtain, in a first detection time period, a first number of the first green balls generated in the goal forming area, a second number of the first green balls generated in the goal forming area, a third number of the first green balls generated in the goal forming area, and a fourth number of the formed green balls generated in the goal forming area, in a second detection time period, and includes: the first obtaining module is configured to: acquiring images of the balling area respectively generated in each detection period, a first detection time period, a second detection time period and a third detection time period in the current target time period; and acquiring a first quantity of the first green balls generated in the ball forming area in a first detection time period, a second quantity of the first green balls generated in the ball forming area in a second detection time period, a third quantity of the first green balls generated in the ball forming area in a third detection time period and a fourth quantity of the molded green balls in the detection period according to the image corresponding to each detection period.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects: the invention provides a water adding amount adjusting method and device for a pelletizer. In the water adding amount adjusting method, first productivity change values and first proportions of qualified pellets generated in a pelletizing area of a pelletizer in each detection period in a current target time period are obtained, and when all the obtained first productivity change values are larger than a first preset maximum change value and all the obtained first proportions are larger than a first preset maximum proportion, the current water adding amount of the pelletizer is adjusted by a first preset adjusting amplitude; then, after a second preset time interval, if a first updating productivity change value of qualified pellets generated in the pelletizing area is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value in each detection period in the current target time period, and the first updating proportion of the qualified pellets is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, controlling the pelletizer to add water at the current water adding amount; or, when a first updated productivity change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated productivity change value of the first green pellet generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and when the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water at the current water adding amount.

Secondly, when a first productivity change value which is less than or equal to the first preset maximum change value exists, and/or a first proportion which is less than or equal to the first preset maximum proportion exists, if a second productivity change value which generates unqualified large balls in the balling area is greater than a second preset maximum change value in each detection period in the current target time period, and the second proportion which generates unqualified large balls in the balling area is greater than a second preset maximum proportion, the current water adding amount of the pelletizer is adjusted downwards by a second preset adjustment amplitude; then, after a third preset time interval, if a second updated productivity change value of the unqualified large balls generated in the balling area is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value in each detection period in the current target time period, and the second updated proportion of the unqualified large balls is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion, controlling the balling machine to add water at the current water adding amount; or, in each detection cycle in the current target time period, if a second updated productivity change value larger than the second preset maximum change value exists in a second updated productivity change value and a second updated proportion of the ball forming area generating unqualified large balls and/or a second updated proportion larger than the second preset maximum proportion exists, the step of reducing the current water adding amount of the ball forming machine by a second preset adjustment amplitude is executed again, and the subsequent steps are executed until the second updated productivity change value of the ball forming area generating unqualified large balls is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value and the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion in each detection cycle in the current target time period, controlling the pelletizer to add water according to the current water adding amount; or when a second productivity change value which is less than or equal to the second preset maximum change value exists and/or a second proportion which is less than or equal to the second preset maximum proportion exists, the water adding amount of the pelletizer is not adjusted, and the current water adding amount adjusting process is finished.

Therefore, in the water adding amount adjusting method for the pelletizer provided by the embodiment of the invention, the water adding amount of the pelletizer is adjusted according to the real generation condition of the green pellets in the pelletizer, which is obtained in real time, and the adjusting accuracy is higher, so that the pelletizing rate of the green pellets, and the yield and the quality of the green pellets are more stable.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.

Fig. 1 is a schematic structural diagram of a water adding amount adjusting system for a pelletizer according to an embodiment of the present invention;

fig. 2 is an exemplary diagram of a green pellet forming process in a pelletizer according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of a water addition amount adjusting method for a pelletizer according to an embodiment of the present invention;

fig. 4 is a block diagram of a water adding amount adjusting device for a pelletizer according to an embodiment of the present invention.

Detailed Description

In combination with the background art, in the prior art, the water adding amount of the pelletizer is adjusted according to the adjustment information input by field operators according to production experience. However, due to the fact that production experiences of workers are different, adjustment information input according to the production experiences is unstable and poor in accuracy, the accuracy of water adding amount adjustment of the pelletizer is poor, the pelletizing rate of green pellets fluctuates greatly, and the yield and the quality of the green pellets are unstable. In order to solve the problem, the invention provides a water adding amount adjusting method and device for a pelletizer.

The water adding amount adjusting method and device for the pelletizer provided by the invention are described in detail below with reference to the accompanying drawings.

Before introducing the water adding amount adjusting method and device for the pelletizer, firstly, the water adding amount adjusting system for the pelletizer provided by the embodiment of the invention is introduced, and the water adding amount adjusting method for the pelletizer provided by the invention can be implemented by using the water adding amount adjusting system.

Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating a water adding amount adjusting system for a pelletizer according to an embodiment of the present invention. As can be seen from fig. 1, the water addition amount adjusting system includes: the device comprises a disc pelletizer 1, an industrial camera 2, a control device 3, a water spraying pipe 4, a flow regulating valve 5, a flowmeter 6, a batching scale 7, a storage bin 8 and a green ball conveying device 9. The pelletizing disc machine 1 is used for receiving materials conveyed by a material bin 8 through a batching scale 7 and water sprayed by a water spraying pipe 4, and generating green pellets by using the materials and the water; the control device 3 is connected with the disc pelletizer 1 and can adjust the rotating speed of the disc pelletizer 1. The industrial camera 2 is used for shooting an image of a balling area corresponding to the disc balling machine 1; the control device 3 is connected with the industrial camera 2 through a cable or an optical cable and is used for acquiring the balling condition of the green ball through the image shot by the industrial camera 2. Flow control valve 5 and flowmeter 6 all set up on spray pipe 4, and all are connected with controlling means 3 for adjust the water spray volume of spray pipe 4, thereby adjust the water yield that adds in balling disc 1. The batching scale 7 is used for receiving the material output by the bin 8 and conveying the material to the disc pelletizer 1 for pelletizing; the control device 3 is connected with the batching scale 7 and is used for controlling the rotating speed of the batching scale 7 so as to control the feeding speed of the batching scale 7 and further regulate the feeding amount entering the disc pelletizer 1. The green ball conveying device 9 is configured to receive the green balls generated by the disc pelletizer 1 and output the green balls.

It should be noted that the disc pelletizer 1 in the water feeding amount adjusting system may be replaced with a cylindrical pelletizer, and the present invention is not limited thereto.

Referring to fig. 2, fig. 2 is a diagram illustrating an example of a green ball balling process in a pelletizer according to an embodiment of the present invention. As can be seen from fig. 2, the material enters the burden balance 7 from the bin 8, and after being discharged from the burden balance 7, the material falls into the pelletizing disc 11 of the disc pelletizer 1 through the feeding point 10, and in the pelletizing disc 11, the movement of the trajectory shown in fig. 2 is randomly plotted according to the rotation condition of the pelletizing disc 11, so as to generate green pellets with different sizes. The green pellets produced in the pelletizing disk 11 are discharged from the pelletizing disk 11, are stopped by the stopper 12, fall from the pellet discharge area 13 to the green pellet conveyor 9, and are discharged by the green pellet conveyor 9.

Referring to fig. 2, in the process of producing green pellets in the cylindrical pelletizer, the material enters the pelletizing barrel of the cylindrical pelletizer through the feeding point, green pellets with different sizes are generated in the pelletizing barrel, and then the green pellets are discharged from the pelletizing barrel, blocked by the baffle, fall from the pellet outlet area to the green pellet conveying device 9, and are output through the green pellet conveying device 9.

In the embodiment of the present invention, green pellets having a diameter greater than or equal to a predetermined threshold value, which are generated in a pelletizer (for example, the disc pelletizer 1 shown in fig. 1), are recorded as formed green pellets. The preset threshold may be set according to an actual application scenario, for example, a value range of the preset threshold may be set to [0.5,8] mm, and optionally, in the embodiment of the present invention, the preset threshold may be set to 5 mm.

Next, in the embodiment of the present invention, the molded green pellets generated in the pelletizer are divided into five categories, which are: unqualified small balls, qualified medium balls, qualified large balls and unqualified large balls; and, the diameters of the failed small balls, the failed medium balls, the failed large balls and the failed large balls were respectively designated as d1, d2, d3, d4 and d 5. Wherein d1 is more than or equal to 5mm and less than or equal to 8mm, d2 is more than or equal to 8mm and less than or equal to 11mm, d3 is more than or equal to 11mm and less than or equal to 14mm, d4 is more than or equal to 14mm and less than or equal to 16mm, and d5 is more than 16 mm. It should be noted that, the type of the formed green ball and the value range of each green ball diameter can be set according to the actual application scenario, which is not limited in the present invention.

In addition, the number of qualified green balls (including qualified small balls, qualified medium balls, and qualified large balls) generated in one area of the balling disk 11 is far greater than the number of qualified green balls generated in other areas of the balling disk 11. The range of the balling-stabilizing area can also be determined according to the actual application scene. For example, the shaded area 14 on the balling disk 11 shown in fig. 2 is a stable balling area of the balling disk 11, and the number of qualified green pellets generated in the shaded area 14 is much larger than the number of qualified green pellets generated in other areas of the balling disk 11.

Referring to fig. 3, fig. 3 is a schematic flow chart illustrating a water adding amount adjusting method for a pelletizer according to an embodiment of the present invention. As can be seen from fig. 3, the water addition amount adjusting method is used for a control device (for example, the control device 3 shown in fig. 1), and includes:

step 101, obtaining a first yield change value of a first green ball generated in a balling area of a pelletizer and a first proportion of the first green ball in each detection period in a current target time period.

The current target time period is a time period with the termination time as the current time and the duration as a first preset duration. In two adjacent detection periods, the starting time of the latter detection period is later than the starting time of the former detection period and earlier than the ending time of the former detection period. The first preset time period may be set according to an actual application scenario, for example, the first preset time period may be set to 110 seconds. The duration of each detection period can also be set according to practical application scenarios, for example, the duration of each detection period can be set to 90 seconds. The first green ball is a qualified pellet.

For a disc pelletizer (such as the disc pelletizer 1 shown in fig. 1), the balling area can be a balling stabilizing area (such as the balling stabilizing area 14 shown in fig. 2) corresponding to the disc pelletizer, and can also be a balling area (such as the balling area 13 shown in fig. 2) corresponding to the disc pelletizer. For the cylindrical pelletizer, the pelletizing area can be the corresponding pelletizing area of the cylindrical pelletizer.

In a specific implementation, the process of obtaining a first yield variation value of a first green ball and a first proportion of the first green ball generated in a balling area of a pelletizer in each detection period in a current target time period specifically includes: in each detection period in the current target time period, acquiring a first number of first green balls generated in the ball forming area in a first detection time period, a second number of the first green balls generated in the ball forming area in a second detection time period, a third number of the first green balls generated in the ball forming area in a third detection time period and a fourth number of molded green balls; wherein the ending time of the first detection time period is earlier than the starting time of the second detection time period; the duration of the first detection time period and the duration of the second detection time period are both target durations; the termination time of the third detection time period is the current time; generating a first yield variation value of a first green ball generated in the balling area in each detection period according to the first quantity, the second quantity and the target duration corresponding to each detection period; and generating a first proportion of the first green balls generated in the balling area in the detection period according to the third quantity and the fourth quantity corresponding to each detection period.

The first detection time period, the second detection time period and the third detection time period can be set according to an actual application scene. For example, the start time of the first detection period may be set as the start time of the corresponding detection cycle, a time spaced 0.5 seconds from the end time of the first detection period may be set as the start time of the second detection period, the durations of the first and second detection periods may be set to 30 seconds, the duration of the third detection period may be set to 90 seconds, and the like.

Further, an industrial camera (for example, the industrial camera 2 shown in fig. 1) captures an image of a ball area in a certain capturing period (for example, once every 3 seconds) from the start, and stores the captured image in a preset storage device in correspondence with the capturing time, for example, the captured image may be stored in a preset storage device in correspondence with the capturing time in the form of a database. Based on this, the acquisition of the images of the balling area respectively generated in each detection cycle in the current target time period, in the first detection time period, in the second detection time period, and in the third detection time period may be implemented as follows: and acquiring images of the balling areas in the first detection time period, the second detection time period and the third detection time period in each detection period with shooting time respectively in the current time period from a preset storage device.

Further, in each detection cycle, acquiring, according to the image corresponding to each detection cycle, a first number of first green balls generated in the ball forming region in a first detection time period, a second number of first green balls generated in the ball forming region in a second detection time period, a third number of first green balls generated in the ball forming region in a third detection time period, and a fourth number of formed green balls in the ball forming region in the third detection time period, which may be implemented as follows: counting the number of qualified small balls contained in the image of the ball forming area, the shooting time of which is positioned in the first detection time period of the detection period, and taking the number as a first number A1 of first raw balls generated in the ball forming area in the first detection time period of the detection period; counting the number of qualified small balls contained in the image of the ball forming area, the shooting time of which is positioned in the second detection time period of the detection period, and taking the number as a second number A2 of the first raw balls generated in the ball forming area in the second detection time period of the detection period; counting the number of unqualified small balls, qualified medium balls, qualified large balls and unqualified large balls contained in the image of the balling region with the shooting time within the third detection time period of the detection period, and respectively recording the number of the unqualified small balls, the qualified medium balls, the qualified large balls and the unqualified large balls as n1, n2, n3, n4 and n5, wherein the number n2 of the qualified small balls is the third number of the first generated balls in the balling region within the third detection time period of the detection period; then, a fourth number of formed green balls generated in the ball forming region in the third detection period in which the detection cycle is generated is calculated according to the following formula N — N1+ N2+ N3+ N4+ N5, where N denotes the fourth number.

In other alternative embodiments, the industrial camera captures images of the ball forming area according to a certain capturing period (e.g. once every 3 seconds) after being turned on, the control device obtains the images captured by the industrial camera in real time from the industrial camera and counts the number of unqualified balls, qualified medium balls, qualified large balls, unqualified large balls and formed green balls in each frame of image, and then the control device stores the number of unqualified balls, qualified medium balls, qualified large balls, unqualified large balls and formed green balls corresponding to each frame of image into a preset storage device according to the capturing time of the frame of image, for example, the number of unqualified balls, qualified small balls, qualified medium balls, qualified large balls, unqualified large balls and formed green balls corresponding to each frame of image can be stored into a preset storage device according to the capturing time of the frame of image, and correspondingly storing the data into a preset storage device in a database form. Based on this, in each detection cycle, acquiring, according to the image corresponding to each detection cycle, a first number of first green balls generated in the ball forming region in a first detection time period, a second number of first green balls generated in the ball forming region in a second detection time period, a third number of first green balls generated in the ball forming region in a third detection time period, and a fourth number of formed green balls in the ball forming region in the third detection time period, the following may be implemented: acquiring the number of all qualified small balls with shooting time within a first detection time period of each detection period from a preset storage device, and taking the number as a first number of first generated balls in the ball forming area within the first detection time period; acquiring the number of all qualified small balls with shooting time in a second detection time period of each detection period from a preset storage device, and taking the number as a second number of first raw balls generated in the ball forming area in the second detection time period; acquiring the number of all qualified small balls with shooting time within a third detection time period of each detection period from a preset storage device, and taking the number as a third number of first generated balls generated in the ball forming area within the third detection time period; and acquiring the number of all formed green balls with shooting time within the third detection time period of each detection period from a preset storage device, and taking the number as the fourth number of the formed green balls generated in the ball forming area within the third detection time period. By adopting the implementation mode, the first quantity, the second quantity, the third quantity and the fourth quantity corresponding to each detection period can be acquired more quickly and accurately, and the applicability is better.

Further, in the detection period, the first yield variation value for generating the first green ball in the balling region may be generated according to the first number, the second number and the target duration corresponding to each detection period, and may be implemented as follows: calculating a first yield change value for generating a first green ball in the balling area in each detection period by using the following formula r, wherein r is A1/T-A2/T; wherein r represents the first yield change value, A1 represents the first quantity, A2 represents the second quantity, and T represents the target length of time.

Further, generating a first proportion of the first green ball generated in the balling region in the detection period according to the third number and the fourth number corresponding to each detection period may be implemented as follows: using the following formula η ═ N2/N, a first ratio at which the first green ball is generated in the balling region in each detection period is calculated. Where η represents the first ratio, N2 represents the third number, and N represents the fourth number.

Step 102, if each first productivity change value is larger than a first preset maximum change value and each first proportion is larger than a first preset maximum proportion, starting to adjust the water adding amount of the pelletizer, and then executing step 104.

For example, in the embodiment of the present invention, the first preset maximum variation value may be set to 4, and the first preset maximum ratio may be set to 7%.

Step 103, if there is a first productivity change value less than or equal to the first preset maximum change value and/or there is a first proportion less than or equal to the first preset maximum proportion, acquiring a second productivity change value for generating a second green ball in the balling area and a second proportion of the second green ball in each detection cycle in the current target time period, and then executing step 108 or step 109.

Wherein the second green ball is an unqualified big ball.

In the first productivity change value and the first proportion obtained in step 101, if there is a first productivity change value smaller than or equal to the first preset maximum change value, or there is a first proportion smaller than or equal to the first preset maximum proportion, or there is both a first productivity change value smaller than or equal to the first preset maximum change value and a first proportion smaller than or equal to the first preset maximum proportion, a second productivity change value for generating a second green ball in the balling area and a second proportion for generating the second green ball in each detection cycle in the current target time period are obtained.

A specific implementation manner of obtaining the second productivity change value of the second green ball and the second proportion of the second green ball in the balling region in each detection cycle in the current target time period may refer to a specific implementation manner of obtaining the first productivity change value of the first green ball and the first proportion of the first green ball in the balling region of the pelletizer in each detection cycle in the current target time period in the foregoing embodiment, and details are not described here.

And step 104, adjusting the current water adding amount of the pelletizer to a first preset adjustment range.

The first preset adjustment amplitude may be set according to an actual application scenario, for example, a value range of the first preset adjustment amplitude may be set to [0.05t/h,0.4t/h ], and optionally, in the embodiment of the present invention, the first preset adjustment amplitude may be set to 0.15t/h (ton/hour).

Specifically, when the step 104 is executed, on the basis of the current water addition amount, the water addition amount of the pelletizer is adjusted by a first preset adjustment amplitude, that is, the actual water addition amount of the pelletizer is adjusted to the sum of the current water addition amount and the first preset adjustment amplitude. Specifically, the control device may adjust the actual water addition amount of the pelletizer to an added value of the current water addition amount and a first preset adjustment range by adjusting a flow regulating valve (e.g., a flow regulating valve 5 shown in fig. 1) provided on a spray pipe (e.g., a spray pipe 4 shown in fig. 1).

And 105, after a second preset time interval, acquiring a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period.

The second preset duration can be set according to the actual application scene. For example, the value range of the second preset time period may be set to [30s, 90s ], and optionally, in the embodiment of the present invention, the second preset time period is set to 30s (seconds).

After the current water adding amount of the pelletizer is adjusted upwards by the first preset adjusting range, a period of adjusting time needs to be reserved, so that the generation condition of a first-life pellet is observed after the pelletizer operates stably, and the accuracy of water adding amount adjustment is improved. Based on this, after the current water adding amount of the pelletizer is adjusted by the first preset adjustment range, and after the interval of the second preset time length, the first updated productivity change value and the first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period are obtained.

Specifically, a specific implementation manner of obtaining the first updated productivity change value and the first updated proportion of the first green ball generated in the balling area in each detection cycle in the current target time period may refer to a specific implementation manner of obtaining the first productivity change value and the first proportion of the first green ball generated in the balling area of the pelletizer in each detection cycle in the current target time period in the foregoing embodiment, and details are not described here.

And 106, if the first updated productivity change value is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value, and the first updated proportion is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

The first preset minimum variation value and the first preset minimum proportion can be set according to an actual application scene, but must be non-negative values. Optionally, in this embodiment of the present invention, the first preset minimum variation value may be set to 1, and the first preset minimum ratio may be set to 0.

If the first updated productivity change value of the first green ball generated in the balling area is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value in each detection period in the current target time period after the water adding amount is adjusted upwards, and the first updated proportion of the first green ball is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, the current production condition of the green ball in the balling machine is in an ideal stable state, the yield and the quality of the qualified green ball are in a stable state, and the balling rate of the qualified green ball is also high. Based on this, the pelletizer can be controlled to continuously add water with the current water adding amount. Specifically, the control device can control the pelletizer to continuously add water with the current water adding amount by controlling the flow regulating valve.

Step 107, if there is a first updated productivity change value greater than said first preset maximum change value and/or there is a first updated proportion greater than said first preset maximum proportion, re-executing step 104.

In some optional embodiments, if, in each detection cycle in the current target time period after the water amount is adjusted up, a first updated productivity change value greater than the first preset maximum change value still exists in the first updated productivity change value and the first updated proportion for generating the first green ball in the balling region, or a first updated proportion greater than the first preset maximum proportion exists, or both the first updated productivity change value greater than the first preset maximum change value and the first updated proportion greater than the first preset maximum proportion exist, the balling condition of the green ball in the balling machine is still in a non-ideal state. Based on this, if the first updated productivity change value and the first updated proportion of the first green ball generated in the balling area still exist in the first updated productivity change value and the first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period after the water adding amount is adjusted upwards and the second preset time interval, and/or the first updated proportion of the first green ball generated in the balling area exists, the step of adjusting the current water adding amount of the balling machine by the first preset adjustment amplitude and the subsequent steps are executed again until the first updated productivity change value of the first green ball generated in the balling area is greater than or equal to the first preset minimum change value and less than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is greater than or equal to the first preset minimum proportion, and when the water adding amount is smaller than or equal to the first preset highest proportion, controlling the pelletizer to continuously add water according to the current water adding amount.

Step 108, if there is a second production rate variation value less than or equal to a second preset maximum variation value and/or there is a second proportion less than or equal to a second preset maximum proportion, ending the current water addition amount adjustment process.

For example, in the embodiment of the present invention, the second preset maximum variation value may be set to 4, and the second preset maximum ratio may be set to 15%.

If, of the second productivity change values and the second ratios obtained in step 103, there is a second productivity change value smaller than or equal to a second preset maximum change value, or there is a second ratio smaller than or equal to a second preset maximum ratio, or there is both a second productivity change value smaller than or equal to a second preset maximum change value and a second ratio smaller than or equal to a second preset maximum ratio, the water addition amount of the pelletizer is not adjusted, and the current water addition amount adjustment process is ended.

And step 109, if each second productivity change value is greater than the second preset maximum change value and each second proportion is greater than the second preset maximum proportion, starting to adjust the water adding amount of the pelletizer.

And step 110, adjusting the current water adding amount of the pelletizer to a second preset adjusting range.

The second preset adjustment amplitude may be set according to an actual application scenario, for example, a value range of the second preset adjustment amplitude may be set to [0.08t/h,0.2t/h ], and optionally, in the embodiment of the present invention, the second preset adjustment amplitude may be set to 0.08t/h (ton/hour).

Specifically, when step 110 is executed, the water adding amount of the pelletizer is adjusted downward by a second preset adjustment range on the basis of the current water adding amount, that is, the actual water adding amount of the pelletizer is adjusted to the difference value between the current water adding amount and the second preset adjustment range. Specifically, the control device can adjust the actual water adding amount of the pelletizer to the difference value between the current water adding amount and the second preset adjusting range by adjusting the flow regulating valve arranged on the water spraying pipe.

And 111, after a third preset time interval, acquiring a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period.

The third preset duration may be set according to an actual application scenario. For example, the value range of the third preset time period may be set to [30s, 90s ], and optionally, in the embodiment of the present invention, the third preset time period is set to 30s (seconds).

After the current water adding amount of the pelletizer is reduced by the second preset adjusting amplitude, a period of adjusting time needs to be reserved so that the generation condition of the second green pellets can be observed after the pelletizer operates stably, and the accuracy of water adding amount adjustment is improved. Based on the above, after the current water adding amount of the pelletizer is adjusted by a second preset adjustment range, and after a third preset time interval, a second updated productivity change value and a second updated proportion of a second green ball generated in the balling area in each detection period in the current target time period are obtained.

Specifically, a specific implementation manner of obtaining the second updated productivity change value and the second updated proportion of the second green ball generated in the balling area in each detection cycle in the current target time period may refer to a specific implementation manner of obtaining the first productivity change value and the first proportion of the first green ball generated in the balling area of the pelletizer in each detection cycle in the current target time period in the foregoing embodiment, and details are not described here.

And 112, if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

The second preset minimum variation value and the second preset minimum proportion can be set according to an actual application scene, but must be non-negative values. Optionally, in this embodiment of the present invention, the second preset minimum variation value may be set to 1, and the second preset minimum ratio may be set to 0.

If the second updated productivity change value of the second green ball generated in the ball forming area is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value in each detection period in the current target time period after the water adding amount is reduced, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion, the current production condition of the green ball in the ball forming machine is in an ideal stable state, the yield and the quality of the qualified green ball are in a stable state, and the ball forming rate of the qualified green ball is also high. Based on this, the pelletizer can be controlled to continuously add water with the current water adding amount. Specifically, the control device can control the pelletizer to continuously add water with the current water adding amount by controlling the flow regulating valve.

Step 113, if there is a second updated productivity change value greater than the second preset maximum change value and/or there is a second updated proportion greater than the second preset maximum proportion, re-executing step 110.

In some optional embodiments, if, in each detection cycle in the current target time period after the water amount is added downwards, a second updated productivity change value greater than the second preset maximum change value still exists in the second updated productivity change value and the second updated proportion of the second green ball generated in the balling region, or a second updated proportion greater than the second preset maximum proportion still exists, or both a second updated productivity change value greater than the second preset maximum change value and a second updated proportion greater than the second preset maximum proportion still exist, indicating that the balling condition of the green balls in the balling machine is still in a non-ideal state. Based on this, if after the water adding amount is adjusted downwards and a third preset time interval is elapsed, in each detection period in the current target time period, a second updated productivity change value larger than a second preset maximum change value still exists in a second updated productivity change value and a second updated proportion of the second green balls generated in the balling area, and/or a second updated proportion larger than the second preset maximum proportion still exists, the step of adjusting the current water adding amount of the balling machine downwards by a second preset adjustment amplitude and subsequent steps are re-executed until the second updated productivity change value of the second green balls generated in the balling area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and the second updated proportion is larger than or equal to the second preset minimum proportion, and when the water adding amount is smaller than or equal to the second preset highest proportion, controlling the pelletizer to continuously add water according to the current water adding amount.

In the water adding amount adjusting method for the pelletizer provided by the embodiment of the invention, a first productivity change value and a first proportion of qualified pellets generated in a pelletizing area of the pelletizer in each detection period in a current target time period are firstly obtained, and when all the obtained first productivity change values are greater than a first preset maximum change value and all the obtained first proportions are greater than a first preset maximum proportion, the current water adding amount of the pelletizer is adjusted up by a first preset adjusting amplitude; then, after a second preset time interval, if a first updating productivity change value of qualified pellets generated in the pelletizing area is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value in each detection period in the current target time period, and the first updating proportion of the qualified pellets is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, controlling the pelletizer to add water at the current water adding amount; or, when a first updated productivity change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated productivity change value of the first green pellet generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and when the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water at the current water adding amount.

Corresponding to the water adding amount adjusting method for the pelletizer, the embodiment of the invention also discloses a water adding amount adjusting device for the pelletizer.

Referring to fig. 4, fig. 4 is a block diagram illustrating a water adding amount adjusting device for a pelletizer according to an embodiment of the present invention. The water adding amount adjusting device may be used for a control device (for example, the control device 3 shown in fig. 1) or may be the control device, which is not limited in the present application. As can be seen from fig. 4, the water addition amount adjusting device includes:

a first obtaining module 401, configured to obtain, in each detection period in a current target time period, a first yield change value and a first ratio of a first green ball generated in a balling area of a pelletizer; the current target time period is a time period with the termination time as the current time and the duration as a first preset time; a first processing module 402, configured to, if each of the first productivity change values is greater than a first preset maximum change value, and each of the first ratios is greater than a first preset maximum ratio, start to adjust a water addition amount of the pelletizer; a second processing module 403, configured to adjust the current water addition amount of the pelletizer by a first preset adjustment range; a second obtaining module 404, configured to obtain, after a second preset time interval, a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period; a third processing module 405, configured to control the pelletizer to add water according to the current water addition amount if the first updated productivity change value is greater than or equal to a first preset minimum change value and is less than or equal to the first preset maximum change value, and the first updated proportion is greater than or equal to a first preset minimum proportion and is less than or equal to the first preset maximum proportion.

Further, this water feeding amount adjusting device still includes: a fourth processing module 406, configured to: and if a first updated production rate change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated production rate change value of the first green pellets generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water by the current water adding amount.

Further, this water feeding amount adjusting device still includes: a third obtaining module 407, configured to obtain, if there is a first productivity change value smaller than or equal to the first preset maximum change value and/or there is a first proportion smaller than or equal to the first preset maximum proportion, a second productivity change value and a second proportion for generating a second green ball in the balling area in each detection cycle within the current target time period; a fifth processing module 408, configured to, if each of the second productivity change values is greater than a second preset maximum change value, and each of the second ratios is greater than a second preset maximum ratio, start to adjust a water addition amount of the pelletizer; a sixth processing module 409, configured to adjust the current water addition amount of the pelletizer by a second preset adjustment range; a fourth obtaining module 410, configured to obtain, at an interval of a third preset time, a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period; a seventh processing module 411, configured to control the pelletizer to add water according to the current water addition amount if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to the second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to the second preset maximum proportion.

Further, this water feeding amount adjusting device still includes: an eighth processing module 412 configured to: and if a second updated productivity change value larger than the second preset maximum change value exists and/or a second updated proportion larger than the second preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer to a second preset adjustment amplitude, and the subsequent steps until the second updated productivity change value of the second green pellets generated in the pelletizing area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and controlling the pelletizer to add water according to the current water adding amount when the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion.

Further, this water feeding amount adjusting device still includes: a ninth processing module 413, configured to end the current water adding amount adjusting process if there is a second production rate variation value smaller than or equal to the second preset maximum variation value and/or there is a second proportion smaller than or equal to the second preset maximum proportion.

Further, the first obtaining module 401 is specifically configured to: in each detection period in the current target time period, acquiring a first number of first green balls generated in the ball forming area in a first detection time period, a second number of the first green balls generated in the ball forming area in a second detection time period, a third number of the first green balls generated in the ball forming area in a third detection time period and a fourth number of molded green balls; wherein the ending time of the first detection time period is earlier than the starting time of the second detection time period; the duration of the first detection time period and the duration of the second detection time period are both target durations; the termination time of the third detection time period is the current time; generating a first yield variation value of a first green ball generated in the balling area in each detection period according to the first quantity, the second quantity and the target duration corresponding to each detection period; and generating a first proportion of the first green balls generated in the balling area in the detection period according to the third quantity and the fourth quantity corresponding to each detection period.

Further, the first obtaining module 401 is configured to, in each detection cycle in the current target time period, obtain, in a first detection time period, a first number of first green balls generated in the goal forming area in the first detection time period, a second number of first green balls generated in the goal forming area in the second detection time period, and a third number of first green balls generated and a fourth number of formed green balls generated in the goal forming area in the third detection time period, including: the first obtaining module 401 is configured to: acquiring images of the balling area respectively generated in each detection period, a first detection time period, a second detection time period and a third detection time period in the current target time period; and acquiring a first quantity of the first green balls generated in the ball forming area in a first detection time period, a second quantity of the first green balls generated in the ball forming area in a second detection time period, a third quantity of the first green balls generated in the ball forming area in a third detection time period and a fourth quantity of the molded green balls in the detection period according to the image corresponding to each detection period.

By adopting the water adding amount adjusting device for the pelletizer, provided by the embodiment of the invention, the steps in the water adding amount adjusting method for the pelletizer can be implemented, and the same beneficial effects can be obtained. The water adding amount adjusting device for the pelletizer provided by the embodiment of the invention adjusts the water adding amount of the pelletizer according to the real generation condition of the green pellets in the pelletizer, which is obtained in real time, and the adjusting accuracy is higher, so that the pelletizing rate of the green pellets, and the yield and the quality of the green pellets are more stable.

In a specific implementation, the present invention further provides a computer storage medium, which may store a program, and when the program is executed, the program may include some or all of the steps of the water adding amount adjusting method for a pelletizer provided by the present invention. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, as for the embodiment of the water adding amount adjusting device for the pelletizer, the description is simple because the embodiment is basically similar to the method embodiment, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. A water adding amount adjusting method for a pelletizer is characterized by comprising the following steps:

acquiring a first yield change value and a first proportion of a first green ball generated in a balling area of a pelletizer in each detection period in a current target time period; the current target time period is a time period with the termination time as the current time and the duration as a first preset time; the first green ball is a qualified small ball;

if each first productivity change value is larger than a first preset maximum change value and each first proportion is larger than a first preset maximum proportion, starting to adjust the water adding amount of the pelletizer;

adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude;

after a second preset time interval, acquiring a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period;

and if the first updating production rate change value is greater than or equal to a first preset minimum change value and less than or equal to a first preset maximum change value, and the first updating proportion is greater than or equal to a first preset minimum proportion and less than or equal to a first preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

2. The water addition amount adjusting method according to claim 1, further comprising:

and if a first updated production rate change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated production rate change value of the first green pellets generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water by the current water adding amount.

3. The water addition amount adjusting method according to claim 1, further comprising:

if a first production rate change value which is less than or equal to the first preset maximum change value exists and/or a first proportion which is less than or equal to the first preset maximum proportion exists, acquiring a second production rate change value and a second proportion for generating a second green ball in the balling area in each detection period in the current target time period; the second green ball is an unqualified large ball;

if each second productivity change value is larger than a second preset maximum change value and each second proportion is larger than a second preset maximum proportion, starting to adjust the water adding amount of the pelletizer;

adjusting the current water adding amount of the pelletizer to a second preset adjustment range;

after a third preset time interval, acquiring a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period;

and if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion, controlling the pelletizer to add water according to the current water adding amount.

4. The water addition amount adjusting method according to claim 3, further comprising:

and if a second updated productivity change value larger than the second preset maximum change value exists and/or a second updated proportion larger than the second preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer to a second preset adjustment amplitude, and the subsequent steps until the second updated productivity change value of the second green pellets generated in the pelletizing area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and controlling the pelletizer to add water according to the current water adding amount when the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion.

5. The water addition amount adjusting method according to claim 3, further comprising:

if there is a second production rate change value which is less than or equal to the second preset maximum change value and/or there is a second proportion which is less than or equal to the second preset maximum proportion, the current water addition amount adjustment process is ended.

6. The method for adjusting the added water amount according to claim 1, wherein the step of obtaining the first yield change value and the first proportion of the first green ball generated in the balling area of the pelletizer in each detection period in the current target time period specifically comprises:

in each detection period in the current target time period, acquiring a first number of first green balls generated in the ball forming area in a first detection time period, a second number of the first green balls generated in the ball forming area in a second detection time period, a third number of the first green balls generated in the ball forming area in a third detection time period and a fourth number of molded green balls; wherein the ending time of the first detection time period is earlier than the starting time of the second detection time period; the duration of the first detection time period and the duration of the second detection time period are both target durations; the termination time of the third detection time period is the current time;

generating a first yield variation value of a first green ball generated in the balling area in each detection period according to the first quantity, the second quantity and the target duration corresponding to each detection period;

and generating a first proportion of the first green balls generated in the balling area in the detection period according to the third quantity and the fourth quantity corresponding to each detection period.

7. The method for adjusting the water adding amount according to claim 6, wherein the process of obtaining, in each detection cycle in the current target time period, a first number of first green balls to be generated in the goal forming area in the first detection time period, a second number of first green balls to be generated in the goal forming area in the second detection time period, a third number of first green balls to be generated in the goal forming area in the third detection time period, and a fourth number of formed green balls to be generated in the goal forming area in the third detection time period specifically comprises:

acquiring images of the balling area respectively generated in each detection period, a first detection time period, a second detection time period and a third detection time period in the current target time period;

and acquiring a first quantity of the first green balls generated in the ball forming area in a first detection time period, a second quantity of the first green balls generated in the ball forming area in a second detection time period, a third quantity of the first green balls generated in the ball forming area in a third detection time period and a fourth quantity of the molded green balls in the detection period according to the image corresponding to each detection period.

8. A water adding amount adjusting device for a pelletizer is characterized by comprising:

the first obtaining module is used for obtaining a first yield change value and a first proportion of a first green ball generated in a balling area of the pelletizer in each detection period in the current target time period; the current target time period is a time period with the termination time as the current time and the duration as a first preset time; the first green ball is a qualified small ball;

the first processing module is used for adjusting the water adding amount of the pelletizer if each first productivity change value is larger than a first preset maximum change value and each first proportion is larger than a first preset maximum proportion;

the second processing module is used for adjusting the current water adding amount of the pelletizer to a first preset adjusting range;

the second obtaining module is used for obtaining a first updated productivity change value and a first updated proportion of the first green ball generated in the balling area in each detection period in the current target time period at intervals of a second preset time length;

and the third processing module is used for controlling the pelletizer to add water according to the current water adding amount if the first updating productivity change value is greater than or equal to a first preset minimum change value and is less than or equal to a first preset maximum change value, and the first updating proportion is greater than or equal to a first preset minimum proportion and is less than or equal to a first preset maximum proportion.

9. The water addition amount adjusting apparatus according to claim 8, further comprising: a fourth processing module to: and if a first updated production rate change value larger than the first preset maximum change value exists and/or a first updated proportion larger than the first preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer by a first preset adjustment amplitude, and the subsequent steps until the first updated production rate change value of the first green pellets generated in the pelletizing area is larger than or equal to the first preset minimum change value and smaller than or equal to the first preset maximum change value in each detection period in the current target time period, and the first updated proportion is larger than or equal to the first preset minimum proportion and smaller than or equal to the first preset maximum proportion, controlling the pelletizer to add water by the current water adding amount.

10. The water addition amount adjusting apparatus according to claim 8, further comprising:

a third obtaining module, configured to obtain a second productivity change value and a second proportion for generating a second green ball in the balling area in each detection cycle in the current target time period if there is a first productivity change value smaller than or equal to the first preset maximum change value and/or there is a first proportion smaller than or equal to the first preset maximum proportion; the second green ball is an unqualified large ball;

the fifth processing module is used for adjusting the water adding amount of the pelletizer if each second productivity change value is larger than a second preset maximum change value and each second proportion is larger than a second preset maximum proportion;

the sixth processing module is used for adjusting the current water adding amount of the pelletizer to a second preset adjusting amplitude;

a fourth obtaining module, configured to obtain, at an interval of a third preset time, a second updated productivity change value and a second updated proportion of the second green ball generated in the balling area in each detection period in the current target time period;

and the seventh processing module is used for controlling the pelletizer to add water according to the current water adding amount if the second updated productivity change value is greater than or equal to a second preset minimum change value and less than or equal to a second preset maximum change value, and the second updated proportion is greater than or equal to a second preset minimum proportion and less than or equal to a second preset maximum proportion.

11. The water addition amount adjusting apparatus as claimed in claim 10, further comprising: an eighth processing module to: and if a second updated productivity change value larger than the second preset maximum change value exists and/or a second updated proportion larger than the second preset maximum proportion exists, re-executing the step of adjusting the current water adding amount of the pelletizer to a second preset adjustment amplitude, and the subsequent steps until the second updated productivity change value of the second green pellets generated in the pelletizing area is larger than or equal to the second preset minimum change value and smaller than or equal to the second preset maximum change value in each detection period in the current target time period, and controlling the pelletizer to add water according to the current water adding amount when the second updated proportion is larger than or equal to the second preset minimum proportion and smaller than or equal to the second preset maximum proportion.

12. The water addition amount adjusting apparatus as claimed in claim 10, further comprising:

a ninth processing module for ending the current water addition amount adjustment process if there is a second production rate variation value less than or equal to the second preset maximum variation value and/or a second proportion less than or equal to the second preset maximum proportion.

13. The water addition amount adjusting device according to claim 8, wherein the first obtaining module is specifically configured to:

14. The water adding amount adjusting device according to claim 13, wherein the first obtaining module is configured to obtain, in each detection cycle of the current target time period, a first number of first green balls to be produced in the ball forming area in a first detection time period, a second number of first green balls to be produced in the ball forming area in a second detection time period, a third number of first green balls to be produced in the ball forming area in a third detection time period, and a fourth number of formed green balls to be produced in the ball forming area in the third detection time period, and includes:

the first obtaining module is configured to: