A kind of uniform discharging control system and method for laterite nickel ore washing line

Abstract

The application discloses a uniform discharging control system and method for laterite nickel ore washing line, the uniform discharging control system of laterite nickel ore washing line comprises: a current signal acquisition module, a judgment module and a feeding speed control module, and the current signal acquisition module is used for connecting the motor of the belt conveyor to obtain the motor current value of the belt conveyor; the judgment module is used for judging the threshold interval where the motor current value of the belt conveyor is located; Described feeding speed control module is used for adjusting the feeding speed of the current plurality of feeders according to the correspondence between motor current threshold interval and feeding speed; The application can realize the adaptive control of the feeding speed to reduce the difference in the discharge weight of the gravel produced by the ore washing, so that the design load of the belt conveyor can be avoided to appear low or high, which is conducive to the efficient utilization of the equipment, and can reduce the risk of belt tearing of the belt conveyor simultaneously.

Description

[0001] Description

[0002] A KIND OF UNIFORM DISCHARGING CONTROL SYSTEM AND METHOD FOR LATERITE NICKEL ORE WASHING LINE

[0003] FIELD OF THE DISCLOSURE

[0004] The application relates to the technical field of laterite nickel ore washing, speci fically relates to a uni form discharge control system and method for laterite nickel ore washing line .

[0005] BACKGROUND

[0006] At present , there are two main types of ore resources that can be used to extract nickel metal : nickel sul fide ore and laterite nickel ore , of which nickel sul fide ore resources account for about 28 % of nickel resources , and laterite nickel ore accounts for about 55% of nickel resources . Nickel sul fide has good hydrophobic properties , and the flotation method can ef fectively enrich nickel sul fide , thereby reducing the cost of smelting, and nickel sul fide ore resources provide about 59% of the world ' s nickel and nickel chemicals , which is the most important way for people to obtain nickel . Unfortunately, with the continuous decline of large-scale nickel sul fide mine resources , the mining depth is increasing day by day, and the di f ficulty and cost of mining are increasing . Today, when nickel sul fide ore resources are facing the crisis of depletion, people have to turn their attention to laterite nickel ore , which is rich in nickel resources . Laterite nickel ore is a loose clay-like polymer containing nickel , iron, magnesium, cobalt , silicon, aluminum and other element oxides formed by long-term geological action of nickel-bearing olivine bedrock, and the iron contained in it is in a +3 valence state due to serious oxidation, resulting in its overall reddish-brown appearance , so it is named laterite nickel ore .

[0007] The Chinese invention patent with the publication number is CN117136101A to provide an automatic ore washing line , which includes : a cylinder washing machine , a trough washing machine , a linear vibrating screen, a slurry storage mechanism, a hydrocyclone and a control mechanism . The cylindrical washer has an ore inlet , a first ore outlet for discharging a larger si ze of ore and a second ore outlet for discharging a smaller si ze of ore ; The trough type washing machine has a washing material inlet , a first washing material outlet for discharging a larger si ze washing material and a second washing material outlet for discharging a smaller si ze washing material , and the washing material inlet is connected with the second mineral material outlet ; The linear vibrating screen has a sieve material inlet , a first sieving material outlet for discharging a larger si ze sieve material and a second sieving material outlet for discharging a smaller si ze sieve material , and the sieve material inlet is connected with the first washing material outlet ; The gravel produced by the washing is generally discharged to a belt conveyor, which is conveyed to the site through the belt conveyor .

[0008] However, in practical application, due to the large di f ference in the gravel content in the laterite nickel ore of di f ferent categories or origins , this leads to a large di f ference in the gravel discharge produced by the cylinder washing machine or the double spiral scrubbing machine , i f the design load of the belt conveyor is higher, this will lead to the belt conveyor often underloading, which is not conducive to the ef ficient utili zation of the equipment , and the design load of the belt conveyor is low, then there will be occasional overload operation, which increases the risk of belt tearing of the belt conveyor .

[0009] SUMMARY

[0010] The obj ect of the present application is to overcome the above- mentioned technical deficiencies , and to provide a uni form discharging control system and method of laterite nickel ore washing line , to solve the technical problem that the design load of the belt conveyor in the prior art cannot be controlled, and the design load of the belt conveyor is high, and the belt conveyor design load is high, which is not conducive to the ef ficient utili zation of the equipment , and when the design load of the belt conveyor is low, overload operation occasionally occurs , and the technical problem that the risk of belt tearing occurs in the belt conveyor is increased . In order to achieve the above technical purpose , the application adopts the following technical scheme :

[0011] First , the application provides a uni form discharging control system for laterite nickel ore washing line , comprising : a current signal acquisition module , a j udgment module and a feeding speed control module , and the current signal acquisition module is used for connecting the motor of the belt conveyor to obtain the motor current value of the belt conveyor ; the j udgment module is used for j udging the threshold interval where the motor current value of the belt conveyor is located; The feeding speed control module is used for adj usting the feeding speed of the current plurality of feeders according to the correspondence between the motor current threshold interval and the feeding speed .

[0012] In some embodiments , the laterite nickel ore washing line of the uni form discharging control system of the laterite nickel ore washing line comprises a plurality of feeders , a plurality of cylindrical ore washers , a first belt conveyor, a plurality of double spiral scrubbing machines , a plurality of linear vibrating screens and a second belt conveyor, the feeder, the cylinder washer and the double spiral scrubbing machine are arranged one by one , the discharging end of the feeder is connected with the feed end of the cylindrical ore washer, and the first discharge port of the cylindrical washer corresponds to the feeding end of the first belt conveyor, Its second discharge port is connected with the feeding end of the double spiral scrubbing machine , and a discharge port of the double spiral scrubbing machine is connected with the linear vibrating screen, and one discharge port of the linear vibrating screen corresponds to the feeding end of the second belt conveyor .

[0013] Second, the application also provides a uni form discharge control method for laterite nickel ore washing line , comprising :

[0014] S I : obtain the motor current value of the belt conveyor ;

[0015] S2 : Judge the threshold range where the motor current value of the belt conveyor is located;

[0016] S3 : Adj ust the feeding speed of the current several feeders according to the correspondence between the motor current threshold interval and the feeding speed . In some embodiments , the correspondence comprises : designing a plurality of threshold intervals , when the motor current value is in a plurality of threshold intervals , the feeding speed of the feeder is reduced through a plural ity of control modes respectively, and the number of feeders controlled in the plurality of control modes is di f ferent ; In a plurality of threshold intervals , the number of feeders controlled to reduce the feeding speed increases sequentially as the numerical values of the multiple threshold intervals increase , and in the corresponding control mode .

[0017] In some embodiments , the feeding speed control module is also provided with a control trigger time , and when the motor current of the belt conveyor is in a threshold interval and continues to be in the threshold interval after exceeding the set control trigger time , the control mode corresponding to the control interval of the control interval is started, otherwise no operation is performed .

[0018] In some embodiments , the feeding speed of the feeder is set to a first-level feeding speed, a second-stage feeding speed and a third-stage feeding speed respectively . Described primary feeding speed is the initial speed of described feeder ; After the feeder undergoes the first speed adj ustment , the feeding speed of the feeder is a secondary feeding speed; After the feeder undergoes the second speed adj ustment , the feeding speed of the feeder is a three-stage feeding speed .

[0019] In some embodiments , the threshold interval is provided with ten levels , and when the motor current value is respectively in the threshold interval of the tenth level , the feeding speed of the feeder is reduced by ten kinds of control modes respectively, the numerical value of the first threshold interval to the value of the tenth threshold interval increases sequentially, and the number of feeders that reduce the feeding speed controlled by the first control mode to the tenth control mode increases one in turn . When the motor current value is in the threshold interval of the first five stages , the feeding speed of the feeder is a secondary feeding speed; When the motor current value is in the threshold interval of the last five stages , the feeding speed of the feeder is a three-stage feeding speed . In some embodiments , the current signal acquisition module is provided with two groups , the two groups of current signal acquisition modules are respectively connected to two belt conveyors of laterite nickel ore washing line , and when the motor current value of any one of the belt conveyors is in a threshold range , the feeding speed of the feeder is reduced through the control mode corresponding to the threshold range .

[0020] Compared with the prior art , the uni form discharging control system and method of laterite nickel ore washing line provided in the present application obtains the motor current value of the belt conveyor through the current signal acquisition module , the j udgment module needle can j udge the threshold range where the motor current value of the belt conveyor is located based on the motor current value measured by the current signal acquisition module , so that the feeding speed of the feeder corresponding to the set number is reduced through the feeding speed control module according to the threshold interval where it is located, so that when the load of the belt conveyor increases , The system can be used to control the set number of feeders to reduce the feeding speed, so as to reduce the overall feeding speed of the washing line , reali ze the adaptive control of the feeding speed, so as to reduce the di f ference in the discharging weight of the gravel produced by the washing, so as to avoid the situation that the design load of the belt conveyor is low or high, which is conducive to the ef ficient utili zation of the equipment , and can reduce the risk of belt tearing of the belt conveyor at the same time .

[0021] BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG . 1 is a schematic diagram of the structure of the uni form discharging control system of laterite nickel ore washing line provided in the embodiment of the present application;

[0023] FIG . 2 is a schematic diagram of the structure of the laterite nickel ore washing line of the uniform discharge control system of the laterite nickel ore washing line provided in the embodiment of the present application;

[0024] FIG . 3 is the flow chart of the uni form discharge control method of laterite nickel ore washing line provided in the embodiment of the present application . Description of the reference drawing marking : 1 . a feeder ; 2 . a cylinder washing machine ; 3 . a first belt conveyor ; 4 . Double spiral scrubbing machine ; 5 . a linear vibrating screen; 6 . a second belt conveyor .

[0025] DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0026] In order to make the purpose , technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conj unction with the accompanying drawings and embodiments . It should be understood that the speci fic embodiments described herein are only used to interpret the present application and are not intended to quali fy the present application .

[0027] In order to solve the problem that the design load of the belt conveyor cannot be controlled, the high design load of the belt conveyor will lead to the low load of the belt conveyor, which is not conducive to the ef ficient utili zation of the equipment , and when the design load of the belt conveyor is low, overload operation will occasionally occur, which increases the technical problem of the risk of belt tearing of the belt conveyor . The application provides a uni form discharging control system and method for laterite nickel ore washing line , which can reali ze the adaptive control of the feeding speed to reduce the di f ference in the discharging weight of the gravel produced by the washing, so as to avoid the situation that the design load of the belt conveyor is low or high, is conducive to the ef ficient utili zation of the equipment , and can reduce the risk of belt tearing of the belt conveyor at the same time .

[0028] It should be noted that the uni form discharging control system and method of laterite nickel ore washing line described in the present application are used for, but not limited to , laterite nickel ore washing line , etc . , in order to facilitate explanation, in the present application, only the uni form discharging control system and method of laterite nickel ore washing line are applied to laterite nickel ore washing line as an example , and the principle of uniform discharging control system and method of laterite nickel ore washing line applied to other types of equipment is essentially the same as that applied to laterite nickel ore washing line , and it will not be repeated here .

[0029] Refer to FIG . 1 , FIG . 1 is a schematic diagram of the structure of the uni form discharging control system of laterite nickel ore washing line provided in the embodiment of the present application, the uni form discharging control system of laterite nickel ore washing line comprises : current signal acquisition module , j udgment module and feeding speed control module , and described current signal acquisition module is used for connecting the motor of belt conveyor to obtain the motor current value of belt conveyor ; the j udgment module is used for j udging the threshold interval where the motor current value of the belt conveyor is located; The feeding speed control module is used for adj usting the feeding speed of the current plurality of feeders according to the correspondence between the motor current threshold interval and the feeding speed .

[0030] Because the gravel content in the laterite nickel ore of di f ferent categories or origins is quite di f ferent , resulting in a large di f ference in the gravel discharge produced by ore washing, resulting in a large di f ference in the load of the belt conveyor, therefore , in the present application, the motor current value of the belt conveyor can be obtained through the current signal acquisition module , and the motor current value increases , then the load of the belt conveyor increases , and the feeding speed can be adaptively reduced at this time , And the motor current value decreases , then the load of the belt conveyor decreases , the feeding speed can be increased adaptively at this moment , the j udgment module is set with a multi-level threshold interval for the current value , and it can j udge the threshold interval where the motor current value of the belt conveyor is located based on the motor current value measured by the current signal acquisition module , so that the feeding speed control module can control and adj ust the feeding speed of the feeder 1 corresponding to the set number according to the threshold interval it is in, so that when the load of the belt conveyor increases , The feeding speed can be reduced by using the system to control the feeder 1 of the set number to reduce the feeding speed of the whole washing line , and reali ze the adaptive control of the feeding speed . Preferably, in one of the embodiments , see FIG . 2 , FIG . 2 is a schematic diagram of the structure of the laterite nickel ore washing line of the uni form discharge control system of the laterite nickel ore washing line provided in the embodiment of the present application, the laterite nickel ore washing line of the uni form discharge control system o f the laterite nickel ore washing line comprises a plurality of feeders 1 , a plurality of cylindrical washing machines 2 , a first belt conveyor 3 , a plurality of double spiral scrubbing machines 4 , a plurality of l inear vibrating screens 5 and a second belt conveyor 6 , and the feeder 1 , The cylindrical washing machine 2 and the double spiral scrubbing machine 4 are arranged one by one , and the feeding end of the feeder 1 is connected with the feeding channel , and the feeding channel is used for dumping the dump truck to pour the ore material , The ore material is sent to the feeder 1 through the ore feeding channel , the discharge end of the feeder 1 is connected with the feed end of the cylindrical washer 2 , the first discharge port of the cylindrical washer 2 corresponds to the feed end of the first belt washer 3 , is used for discharging the large gravel to the first belt conveyor 3 , the second discharge port of the cylindrical washer 2 is connected to the feed end of the double spiral scrubbing machine 4 , is used for discharging the slurry to the double spiral scrubbing machine 4 , and a discharge port of the double spiral scrubbing machine 4 is connected with the linear vibrating screen 5 , It is used for discharging small gravel to linear vibrating screen 5 , and one discharge port of described linear vibrating screen 5 corresponds to the feeding end of described second belt conveyor 6 , is used for discharging small gravel to the second belt conveyor 6 after screening out water, and another discharge port of double spiral scrubbing machine 4 discharges the slurry and the water that linear vibrating screen 5 sieves and mixes , and conveys to the next process . Therefore , two belt conveyors are provided on this laterite nickel ore washing line , and the current signal acquisition module can be provided with two groups , and the motors of the two belt conveyors are correspondingly connected to measure the motor current value of the two belt conveyors respectively, and the feeding speed of the feeder 1 corresponding to the set number is comprehensively controlled by the motor current value of the two belt conveyors , which is conducive to reali zing the ef ficient utili zation of the belt conveyor .

[0031] Preferably, the feeder 1 is an apron feeder 1 .

[0032] It should be noted that , in other possible embodiments , the belt conveyor may also be provided with one or three strips , etc . , and is not limited herein .

[0033] Refer to FIG . 3 , FIG . 3 is the flow chart of the uni form discharge control method of laterite nickel ore washing line provided in the embodiment of the present application, and secondly, the embodiment of the present application also provides a uni form discharge control method of laterite nickel ore washing line , comprising the uni form discharge control system of laterite nickel ore washing line as described in any one of the above embodiments , and the method comprises :

[0034] S I : obtain the motor current value of the belt conveyor ;

[0035] S2 : Judge the threshold range where the motor current value of the belt conveyor is located;

[0036] S3 : According to the correspondence between the motor current threshold interval and the feeding speed, and the feeding speed of the corresponding set number of feeders is controlled according to the threshold range .

[0037] Wherein, the correspondence comprises : designing a plurality of threshold intervals , when the motor current value is in a plurality of threshold intervals , the feeding speed of the feeder 1 is reduced through a plurality of control modes respectively, and the number of feeders 1 controlled in a plurality of control modes is di f ferent ; In a plurality of threshold intervals , with the numerical increase of a plurality of threshold intervals , in the corresponding control mode , the number of feeders 1 that controls to reduce feeding speed increases sequentially .

[0038] Speci fically, when the motor current of the belt conveyor is in the threshold range of the first stage , the feeding speed is reduced by the first control mode ; When the motor current of the belt conveyor is in the second threshold range , the feeding speed is reduced by the second control mode ; And so on, reali ze the control of the feeding speed of several feeders 1 . Moreover, in the correspondence , the value of the second-level threshold interval is greater than the value of the first-level threshold interval , and the number of feeders 1 controlled by the second control mode is more than the number of feeders 1 controlled by the first control mode .

[0039] Preferably, in one of the embodiments , ten washing machines are arranged, the ten washing machines are set to five groups , and the feeds of the five groups of washing machines correspond to five groups of feeders respectively .

[0040] When the motor current value of the belt conveyor is in the first-level threshold range , the feeding speed i s reduced by the first control mode , and the feeding speed of the first group feeder is speci fically controlled;

[0041] When the motor current value of the belt conveyor is in the second-level threshold range , the feeding speed is reduced by the second control mode , and the feeding speed of the first group and the second group feeders is speci fically controlled;

[0042] When the motor current value of the belt conveyor is in the third-level threshold range , the feeding speed i s reduced by the third control mode , and the feeding speed of the feeders from the first group to the third group is speci fically controlled;

[0043] When the motor current value of the belt conveyor is in the fourth threshold range , the feeding speed is reduced by the fourth control mode , and the feeding speed of the feeders from the first group to the fourth group is speci fically controlled;

[0044] When the motor current value of the belt conveyor is in the fi fth threshold range , the feeding speed is reduced by the fi fth control mode , and the feeding speed of the feeders from the first group to the fi fth group is speci fically controlled .

[0045] It should be noted that in the present application, each group of feeders may include one feeder or multiple feeders .

[0046] In order to ensure the control accuracy, the embodiment adopts the mode of hysteresis adj ustment , therefore , in the present embodiment , the control trigger time can be set through the feeding speed control module , when the motor current value of the belt conveyor is in a threshold range , and continues to be in the threshold interval after exceeding the set control trigger time , then the control mode corresponding to the control interval of the control interval is started, otherwise no operation is performed . Speci fically, when the motor current value of the belt conveyor is in the first-level threshold range , the motor current value of the belt conveyor is still greater than the minimum value of the threshold range and remains in the first-level threshold interval after the set control trigger time , the first control mode is executed; I f it is less than the minimum value of the first-level threshold interval or is not in the first-level threshold interval after the set control trigger time , the feeder 1 does not reduce the speed . Of course , when the motor current value of the belt conveyor is in the first-level threshold range , and in the set control trigger time , the motor current value is in the second- level threshold range or other level threshold range , the reset system will be triggered, and the control trigger time will be recalculated at this time , and when the motor current value is still in the threshold interval after the time reset after the set control trigger time , the corresponding control mode of the threshold interval is executed .

[0047] Preferably, the control trigger time is 5s- 10s .

[0048] In order to improve the control accuracy, in some better embodiments , the feeding speed of the feeder 1 is set to a first- level feeding speed, a second-level feeding speed and a third- stage feeding speed respectively , the speed of the primary feeding speed, the secondary feeding speed and the tertiary feeding speed are successively reduced, and the primary feeding speed is the initial velocity of the feeder 1 ; After the feeder 1 undergoes the first speed adj ustment , the feeding speed of the feeder 1 is a secondary feeding speed; After the feeder 1 undergoes a second speed adj ustment , the feeding speed of the feeder 1 is a three- stage feeding speed .

[0049] It should be noted that the feeding speed can be set by the feeding speed control module , and the first adj ustment of the feeding speed can be carried out after the first-level threshold range , and the second adj ustment of the feeding speed can be carried out after the n-level threshold range , so that in the work of laterite nickel ore washing line , when the motor current value of feeder 1 is not in any threshold range , feeder 1 adopts the first-stage feeding speed for feeding by default ; I f the subsequent motor current value rises to be in the first-stage threshold range , the first speed adj ustment is carried out , so that the corresponding feeder 1 adopts the second-stage feeding speed; After the motor current value rises to be in the nth threshold range , then the second speed adj ustment is carried out , so that the corresponding feeder 1 adopts the three-stage feeding speed .

[0050] Preferably, in some embodiments , the laterite nickel ore washing line is provided with ten groups of feeders , correspondingly, the threshold interval is provided with ten levels , when the motor current value is respectively in the threshold interval of the tenth level , the feeding speed of the feeder 1 is reduced through ten control modes respectively, the value of the first threshold interval to the value of the tenth threshold interval increases sequentially, and the number of feeders 1 controlled by the first control mode to the tenth control mode that reduces the feeding speed increases by one sequentially .

[0051] When the motor current value is in the threshold interval of the first five stages , the feeding speed of the feeder 1 is a secondary feeding speed; When the motor current value is in the threshold interval of the last five stages , the feeding speed of the feeder 1 is a three-stage feeding speed .

[0052] It is understandable that , in this embodiment , when the motor current value of the feeder 1 is below the threshold range of the first stage , the feeder 1 adopts the first-level feeding speed for feeding by default ; When the motor current value is in one of the threshold intervals of the first threshold interval to the fi fth threshold interval for the first time , then the first speed adj ustment is carried out , so that when the motor current value is in the first threshold interval to the fi fth threshold interval , the part of the feeder 1 controlled by the corresponding control mode adopts the secondary feeding speed; When the motor current value is in one of the threshold intervals of the sixth threshold interval to the tenth threshold interval for the first time , then the second speed adj ustment is carried out , so that when the motor current value is in the sixth threshold interval to the tenth threshold interval , the part feeder 1 controlled by the corresponding control mode adopts the three-stage feeding speed .

[0053] Preferably, in some embodiments , see FIG 2 , FIG . 2 is a schematic diagram of the structure of the laterite nickel ore washing line of the uni form discharge control system of the laterite nickel ore washing line provided in the embodiment of the present application, the laterite nickel ore washing line of the uni form discharge control system o f the laterite nickel ore washing line comprises a plurality of feeders 1 , a plurality of cylindrical washing machines 2 , a first belt conveyor 3 , a plurality of double spiral scrubbing machines 4 , a plurality of l inear vibrating screens 5 and a second belt conveyor 6 , and the feeder 1 , the cylindrical ore washing machine 2 and the double spiral scrubbing machine 4 are arranged one by one , The feeding end of feeder 1 is connected with the feeding channel , the feeding channel is used for dumping truck to pour the ore material , the ore material is sent to the feeder 1 through the feeding channel , the discharging end of the feeder 1 is connected with the feeding end of the cylindrical washing machine 2 , the first discharge port of the cylindrical washing machine 2 corresponds to the feeding end of the first belt conveyor 3 , and is used for discharging the large gravel to the first belt conveyor 3 , and the second discharge port of the cylinder washing machine 2 is connected to the feeding end of the double spiral scrubbing machine 4 and is used for discharging the slurry to the double spiral scrubbing machine 4 , A discharge port of the double spiral scrubbing machine 4 is connected with the linear vibrating screen 5 , is used for discharging the small gravel to the linear vibrating screen 5 , and one discharge port of the linear vibrating screen 5 corresponds to the feeding end of the second belt conveyor 6 , is used for discharging the small gravel to the second belt conveyor 6 after the water is screened out , and another discharge port of the double spiral scrubbing machine 4 discharges the slurry and the water that the linear vibrating screen 5 sieves is mixed, and is conveyed to the next process .

[0054] Therefore , there are actually two belt conveyors on this laterite nickel ore washing line , the current signal acquisition module is provided with two groups , to connect the two belt conveyors of the laterite nickel ore washing line respectively, to monitor the current value of the first motor in the first belt conveyor 3 and the second motor in the second belt conveyor 6 respectively, the first motor current has the first-level threshold interval , the second-level threshold interval and the like , and the second motor current has the first-level threshold interval , the second-level threshold interval and the like , all in this practical application scenario , as long as the second motor is " again" I f the current of the first motor is in the first threshold interval and the current of the second motor is in the first ' threshold range" , then the feeding speed of the feeder 1 needs to be controlled .

[0055] It should be noted that when the current value o f the first motor and the current value of the second motor are not in the same level threshold range , the higher level threshold range shall prevail , for example , when the current value of the first motor is in the first level threshold range , and the current value of the second motor is in the second level threshold range , the second control mode is executed .

[0056] The application obtains the motor current value of the belt conveyor through the current signal acquisition module , the j udgment module needle can j udge the threshold interval where the motor current value of the belt conveyor is located based on the motor current value measured by the current signal acquisition module , so that according to the threshold interval where it is located, the feeding speed of the feeder 1 corresponding to the set number is reduced through the feeding speed control module , so that when the load of the belt conveyor increases , the feeding speed of the feeder 1 of the set number can be controlled by the system to reduce the feeding speed of the whole washing line , The adaptive control of the feeding speed is reali zed to reduce the di f ference in the discharge weight of the gravel produced by the ore washing, so as to avoid the situation that the design load of the belt conveyor is low or high, which is conducive to the ef ficient use of the equipment and can reduce the risk of belt tearing of the belt conveyor .

[0057] In the description of the present application, it is noted that the terms "mounted" , " connected" and " connected" are to be construed broadly, for example , they may be fixed, detachable , or integrally connected; It can be mechanically or electrically connected; It can be directly connected or indirectly through an intermediate medium, or it can be a communication between two components . For those of ordinary skill in the art , the speci fic meaning of the above terms in the present application may be understood on a case-by-case basis .

[0058] It should be noted that , in the present application, relational terms such as " first" and " second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or sequence between those entities or operations . Further, the term " including" , " containing" or any other variation thereof is intended to cover non-exclusive inclusion so that a process , process , article or apparatus that includes a series of elements includes not only those elements , but also other elements that are not expressly listed, or that are inherent to such process , method, article or apparatus . In the absence of further restrictions , the elements defined by the statement " including a > " do not preclude the existence of other identical elements in the process , method, article or apparatus that includes the elements .

[0059] The speci fic embodiment of the present application described above does not constitute a limitation of the scope of protection of the present application . Any other corresponding alterations and deformations made in accordance with the technical conception of the present application shall be included in the protection scope of the claims of the present application .

Claims

WHAT IS CLAIMED IS1 . A uni form discharge control system for laterite nickel ore washing line , which is characteri zed in that : the current signal acquisition module is used for connecting the motor of the belt conveyor to obtain the motor current value of the belt conveyor ; the j udgment module is used for j udging the threshold interval where the motor current value of the belt conveyor is located; and, the feeding speed control module is used for adj usting the feeding speed of the current plurality of feeders according to the correspondence between the motor current threshold interval and the feeding speed .2 . the uni form discharging control system of laterite nickel ore washing line according to claim 1 , it is characteri zed in that , the laterite nickel ore washing line of the uni form discharging control system of described laterite nickel ore washing line comprises a plurality of feeders , a plurality of cylindrical washing machines , a first belt conveyor, a plurality of double spiral scrubbing machines , a plurality of linear vibrating screens and a second belt conveyor, Described feeder, cylindrical washing machine and double spiral scrubbing machine are arranged one by one , the discharge end of described feeder is connected with the feed end of described cylindrical washing machine , the first discharge port of described cylindrical washing machine corresponds to the feed end of described first belt conveyor, its second discharge port is connected with the feed end of described double spiral scrubbing machine , one discharge port of described double spiral scrubbing machine is connected to described linear vibrating screen, and one discharge port of described linear vibrating screen corresponds with the feeding end of described second belt conveyor .3 . A uni form di scharge control method for laterite nickel ore washing line , which is characteri zed in that :S I : obtain the motor current value of the belt conveyor ;S2 : Judge the threshold range where the motor current value of the belt conveyor is located;S3 : Adj ust the feeding speed of the current several feeders according to the correspondence between the motor current threshold interval and the feeding speed .4 . the uni form discharging control method of laterite nickel ore washing line according to claim 3 , wherein the correspondence comprises : design a plurality of threshold intervals , when the motor current value is in a plurality of threshold intervals , the feeding speed of the feeder is reduced by a plurality of control modes respectively, and the number of feeders controlled in the plurality of control modes is di f ferent ;In a plurality of threshold intervals , the number of feeders that control the reduction of feeding speed increases sequentially as the numerical values of the plurality of threshold intervals increase , in the corresponding control mode .5 . the uni form discharging control method of laterite nickel ore washing line according to claim 4 , it is characteri zed in that , also set with control trigger time , when the motor current of belt conveyor is in a threshold range , and lasts until it is still in this threshold interval after exceeding the set control trigger time , then the control mode corresponding to the control interval of controlling this threshold interval starts , otherwise no operation is performed .6 . the uni form discharging control method of laterite nickel ore washing line according to claim 4 , wherein the feeding speed of described feeder is respectively set to first-stage feeding speed, second-stage feeding speed and third-stage feeding speed .7 . the uni form discharging control method of laterite nickel ore washing line according to claim 6 , wherein the primary feeding speed is the initial speed of the feeder ;After the feeder undergoes the first speed adj ustment , the feeding speed of the feeder is a secondary feeding speed;After the feeder undergoes the second speed adj ustment , the feeding speed of the feeder is a three-stage feeding speed .8 . the uni form discharging control method of laterite nickel ore washing line according to claim 7 , wherein the threshold interval is provided with ten levels , and when the motor current value is respectively in the threshold interval of the tenth level , the feeding speed of the feeder is reduced by ten kinds of control modes respectively,The value of the first threshold interval to the tenth threshold interval increases sequentially, and the number of feeders controlled by the first control mode to the tenth control mode to reduce the feeding speed increases by one in turn .9 . the uni form discharging control method of laterite nickel ore washing line according to claim 8 , wherein when the motor current value is in the threshold range of the first five stages , the feeding speed of the feeder is a secondary feeding speed;When the motor current value is in the threshold interval of the last five stages , the feeding speed of the feeder is a three- stage feeding speed .10 . the uni form discharging control method of laterite nickel ore washing line according to claim 9 , it is characteri zed in that , the current signal acquisition module is provided with two groups , the two groups of described current signal acquisition modules are respectively connected with two belt conveyors of laterite nickel ore washing line , and when the motor current value of any one of the belt conveyor is in a threshold range , the feeding speed of the feeder is reduced by the control mode corresponding to this threshold range .

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