CN110726599A - Control system and control method for automatically filling graphite electrode into ore sample - Google Patents
Control system and control method for automatically filling graphite electrode into ore sample Download PDFInfo
- Publication number
- CN110726599A CN110726599A CN201910924722.9A CN201910924722A CN110726599A CN 110726599 A CN110726599 A CN 110726599A CN 201910924722 A CN201910924722 A CN 201910924722A CN 110726599 A CN110726599 A CN 110726599A
- Authority
- CN
- China
- Prior art keywords
- graphite electrode
- sensor
- push rod
- lead screw
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
The invention provides a control system and a control method for automatically filling a graphite electrode with a mineral sample.A material sieving module comprises a material box, a swinging cylinder and a material groove which are arranged from top to bottom, wherein a plurality of unfilled graphite electrodes are arranged in the material box; the signal detection module detects the action states of the linear cylinder and the swing cylinder, detects whether the graphite electrode falls into the trough or not, outputs the working state of the control module control system, automatically fills the graphite electrode with the ore sample, and reduces the labor intensity of manual operation.
Description
Technical Field
The invention relates to the technical field of mineral processing experiment automation, in particular to a control system and a control method for automatically filling a graphite electrode into a mineral sample.
Background
Along with the rapid development of economy in China, the demand of various mineral resources is increased rapidly, in order to save resources and avoid extensive exploitation of the mineral resources, the components and the contents of various geological minerals are known clearly, and geological mineral departments often adopt a spectral analysis method to investigate geological element components. The method comprises the following steps: firstly, collecting rock and soil samples in the field, and crushing and grinding the samples in a laboratory; secondly, adding an equal amount of buffering agent into the ground sample, and fully mixing; then, filling the uniformly mixed sample powder into graphite electrodes (electrodes for short) with corresponding structures; and finally, carrying out spectral analysis on the electrode filled with the sample mixed material, and calculating the element components of the sample. At present, the process of plugging the graphite electrode sample is mainly carried out through manual operation, the graphite electrode is slowly filled into the mineral sample plugging rod by an operator for compaction, the mode is high in labor intensity, the graphite electrode is easy to damage, and the production efficiency is low.
Disclosure of Invention
According to the defects of the prior art, the invention aims to provide a control system and a control method for automatically filling an ore sample into a graphite electrode, so that the ore sample is automatically filled into the graphite electrode, and the labor intensity of manual operation is reduced.
In order to solve the technical problems, the invention adopts the technical scheme that:
an automatic graphite electrode filling ore sample control system comprises:
the material screening module comprises a material box, a swinging cylinder and a material groove which are arranged from top to bottom, wherein a plurality of graphite electrodes which are not filled are arranged in the material box, a discharge hole is formed in the bottom of the material box, and the swinging cylinder is used for swinging the material box to enable the graphite electrodes to fall into the material groove from the material box;
the plugging module comprises a funnel, a linear cylinder and a plugging rod, wherein a plugging hole is transversely formed in the bottom of the funnel, an annular baffle plate used for resisting the movement of the graphite electrode is arranged in the middle of the plugging hole, an ore sample is arranged in the funnel, and the plugging rod is fixed at the tail end of a piston rod extending out of the linear cylinder and is opposite to one end of the plugging hole;
the motion module comprises a push rod and a pushing device, the push rod is arranged on the pushing device and is opposite to the other end of the material plugging hole, the pushing device is used for pushing the push rod to move, and the push rod further pushes the graphite electrode in the material groove to move into the material plugging hole;
the signal detection module comprises a position sensor, a magnetic switch and a first optical fiber sensor, wherein the position sensor is used for determining the position of the pushing device, the magnetic switch is used for detecting the action states of the linear cylinder and the swing cylinder, and the first optical fiber sensor is used for detecting whether the graphite electrode falls into the trough or not;
the output control module comprises an electromagnetic valve and a controller, the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is used for changing the action state of the linear cylinder, the second electromagnetic valve is used for changing the action state of the swing cylinder, and the controller regulates and controls the working states of the pushing device, the first electromagnetic valve and the second electromagnetic valve based on detection signals of a position sensor, a magnetic switch and a first optical fiber sensor.
Furthermore, the pushing device comprises a lead screw module, the lead screw module comprises a lead screw, a lead screw motor for driving the lead screw to rotate and a sliding block sliding on the lead screw, and the push rod is arranged on the sliding block.
Furthermore, a supporting seat is fixed on the sliding block, the push rod is arranged in the supporting seat, a force compensation device is further arranged in the supporting seat and comprises a pressure sensor and a spring, the pressure sensor is right opposite to one end, away from the material plugging hole, of the push rod, one end of the spring is fixed on the push rod, and the other end of the spring is fixed on the pressure sensor.
Furthermore, a second optical fiber sensor is arranged on the lead screw module, and the controller controls a detection signal of the second optical fiber sensor to regulate and control the working state of the pushing device.
Further, position sensor includes negative limit sensor, positive limit sensor and photoelectric sensor, negative limit sensor with positive limit sensor installs respectively the both ends of lead screw are used for the restriction the position of slider, photoelectric sensor installs limit sensor with between positive limit sensor, photoelectric sensor's light source position is the home position.
Further, graphite electrode automatic filling ore sample control system still includes funnel motor and funnel frame, the funnel motor is established the below of sharp cylinder, the funnel frame is the cross and passes through the funnel motor drives the rotation, the end of funnel frame all is fixed with the funnel.
A graphite electrode automatic filling ore sample control method comprises the following steps:
the method comprises the following steps that firstly, before a system is started to work, sufficient graphite electrodes are ensured to be arranged in a material box, and after no error is ensured, the system is controlled to start working;
step two, the controller controls the second electromagnetic valve to be closed, so that the swing cylinder swings, and the graphite electrode in the material box is screened in the material groove;
thirdly, the controller controls the pushing device to work to push the push rod to move, so that the graphite electrode which is not filled in the material groove is pushed to move into the material filling hole;
and step four, the controller controls the first electromagnetic valve to be closed, so that the linear motor works to push the plug rod to plug the ore sample in the funnel into the graphite electrode.
And further, in the second step, whether the graphite electrode falls into the trough or not is detected through the first optical fiber sensor, if the graphite electrode is not detected by the first optical fiber sensor and falls into the trough, the controller controls the swing cylinder to shake again, and the process is repeated until the graphite electrode falls into the trough.
Further, in step three, judge whether impaired through power compensation arrangement graphite electrode, when the push rod promoted graphite electrode and get into the stopper material hole and contradict annular baffle, the slider continues to drive the push rod and removes, and the spring is compressed, and the atress of knowing the spring by hooke's law is:
F＝k·x (1)
the friction force of the graphite electrode in the motion process is as follows:
Ff＝μ·FN(2)
the pressure sensor detection value is:
Fforce of＝F+Ff(3)
In the formulas (1), (2) and (3), wherein F represents the value of the spring force in the working process, k is a constant and represents the elastic coefficient of the spring, x represents the deformation amount of the spring, and FfRepresents the value of the kinetic friction force during the movement of the graphite electrode, mu represents the kinetic friction coefficient, FNDenotes the positive pressure of the graphite electrode, FForce ofA measurement value representing a pressure sensor;
when 0 is more than F + Ff＜FPWhen the graphite electrode is entering the plugging hole, the graphite electrode is in the process of entering the plugging hole;
when F is presentP≤F+Ff≤FmaxWhen the machining tool is used, the graphite electrode is positioned at the position to be machined;
when F + Ff≥FmaxWhen the thrust is too large, the graphite electrode is damaged;
wherein, FPRepresenting the force to which the pressure sensor is subjected when the graphite electrode just abuts the annular baffle in the plug hole, FmaxRepresents the maximum pressure value that the graphite electrode can withstand, above which the graphite electrode will be damaged, FPAnd FmaxFor the experiment, the controller processes the feedback value of the pressure sensor to judge the stoneWhether the ink electrode is damaged or not, and further regulating and controlling the working state of the lead screw motor.
Further, in the third step, the working position of the graphite electrode is limited according to the position of the light source of the second optical fiber sensor, the distance from one end of the graphite electrode falling into the trough, which is close to the material filling hole, to the middle part of the material filling hole is divided into two sections, the first section is the distance from one end of the graphite electrode falling into the trough, which is close to the material filling hole, to the second optical fiber sensor, the second section is the distance from the light source of the second optical fiber sensor to the middle part of the material filling hole, the length of the first section is determined by the length of the graphite electrode, the length of the second section is constant, when the push rod pushes the graphite electrode to move forward to one end of the graphite electrode to cover the light source of the second optical fiber sensor, the photoelectric sensor feeds back the signal to the controller, the controller controls the movement of the lead screw motor, so that the push rod pushes the graphite electrode to move:
in the formula (4), P represents the number of pulses required for controlling the lead screw motor to help the graphite electrode move from the second optical fiber sensor to the middle of the plug hole, x represents the distance from the light source of the second optical fiber sensor to the middle of the plug hole, n represents the number of pulses required for the lead screw motor to rotate for one turn, and S represents the lead of the lead screw.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the control system and the control method for automatically filling the graphite electrode with the mineral sample, the swinging motor in the screening module is controlled to act, the pushing device in the motion module is controlled to move, and the linear air cylinder in the plugging module is controlled to act, so that the degree of automatically filling the mineral sample is improved.
2. According to the control system and the control method for automatically filling the graphite electrode with the ore sample, provided by the invention, for the problem that the graphite electrode is easy to be damaged in the material plugging process, a method for judging whether the graphite electrode is damaged or not through a force compensation device is provided, when a pressure sensor at the tail end of a push rod reaches a set value, the material pushing is finished, if the pressure sensor exceeds a set limit value, the material pushing is failed, and a system sends an alarm signal to remind a technician to remove the fault.
3. According to the control system and the control method for automatically filling the graphite electrode with the ore sample, disclosed by the invention, for the problem that the graphite electrode is easy to damage in the material plugging process, a method for controlling the moving distance of the graphite electrode through the second optical fiber sensor is provided, so that the graphite electrode is prevented from being damaged.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the present invention.
FIG. 4 is a schematic diagram of the control system of the present invention.
FIG. 5 is a schematic view of the connection between the push rod and the support base according to the present invention.
FIG. 6 is a top view of the connection between the push rod and the support base according to the present invention.
FIG. 7 is a schematic view of a second fiber sensor of the present invention in contact with a graphite electrode.
FIG. 8 is a flow chart of a control system for automatically filling sample powder into a graphite electrode according to the present invention.
In the figure: 1. a magazine; 2. a push rod; 3. a supporting seat; 4. a lead screw module; 5. a positive limit sensor; 6. a photosensor; 7. a negative limit sensor; 8. a lead screw motor; 9. a funnel; 10. a worm gear reducer; 11. a linear cylinder; 12. a funnel stand; 13. a hopper motor; 14. a plug hole; 15. a spring; 16. a pressure sensor; 17. a swing cylinder; 18. a first solenoid valve; 19. a second solenoid valve; 20. a servo driver; 21. a first fiber optic sensor; 22. a magnetic switch; 23. a trough; 24. a graphite single machine; 25. a second fiber optic sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1-8, a graphite electrode automatic filling ore sample control system includes a screening module, a plugging module, a motion module, a signal detection module and an output control module.
Referring to fig. 1-3, the material sieving module includes a material box 1, a swing cylinder 17 (not shown in the figures) and a material groove 23 arranged from top to bottom, a plurality of graphite electrodes 24 (not shown in the figures) without filling are arranged in the material box 1, a material outlet is arranged at the bottom of the material box 1, and the swing cylinder 17 is used for swinging the material box 1 to enable the graphite electrodes 24 to fall into the material groove 23 from the material box 1. In the invention, the caliber of the discharge port can just pass through one graphite electrode 24, so that only one graphite electrode 24 falls into the trough 23 from the material box 1 when the material box 1 is swung by the swing cylinder 17 each time.
Referring to fig. 1-3, the plug module includes a funnel 9, a linear cylinder 11 and a plug rod, a plug hole 14 (not shown in the figure) is transversely disposed at the bottom of the funnel 9, an annular baffle plate for resisting the movement of the graphite electrode 24 is disposed in the middle of the plug hole 14, a sample is disposed in the funnel 9, and the plug rod is fixed at the end of a piston rod extending from the linear cylinder 11 and opposite to one end of the plug hole 14.
The motion module comprises a push rod 2 and a pushing device, the push rod 2 is arranged on the pushing device and is just opposite to the other end of the material plugging hole 14, the pushing device is used for pushing the push rod 2 to move, and the push rod 2 further pushes the graphite electrode 24 in the material groove 23 to move into the material plugging hole 14.
In the invention, the linear cylinder 11 and the motion module are respectively arranged at two sides of the funnel 9, the push device pushes the push rod 2 to move, the push rod 2 further pushes the graphite electrode 24 in the material groove 23 to move to the material plugging hole 14, and then the plug rod moves to plug the mineral material in the funnel 9 into the graphite electrode 24.
Preferably, thrust unit includes lead screw module 4, and lead screw module 4 includes the lead screw, drives lead screw pivoted lead screw motor 8 and the gliding slider on the lead screw, and push rod 2 establishes on the slider.
Referring to fig. 4, the signal detection module includes a position sensor for determining the position of the pushing device, a magnetic switch 22 for detecting the operation states of the linear cylinder 11 and the swing cylinder 17, and a first optical fiber sensor 21 for detecting whether the graphite electrode 24 falls into the trough 23.
Preferably, the position sensor comprises a negative limit sensor 7, a positive limit sensor 5 and a photoelectric sensor 6, the negative limit sensor 7 and the positive limit sensor 5 are respectively installed at two ends of the screw rod and used for limiting the position of the sliding block, the photoelectric sensor 6 is installed between the limit sensor and the positive limit sensor 5, and the light source position of the photoelectric sensor 6 is the original position.
Referring to fig. 1 to 3, the magnetic switch 22 includes a first magnetic switch, a second magnetic switch, a third magnetic switch, and a fourth magnetic switch, the first magnetic switch and the second magnetic switch being used to detect the non-operating state and the operating state of the linear cylinder 11, and the third magnetic switch and the fourth magnetic switch being used to detect the non-operating state and the operating state of the swing cylinder 17.
Referring to fig. 4, the output control module includes solenoid valves including a first solenoid valve 18 and a second solenoid valve 19, the first solenoid valve 18 for changing the operation state of the linear cylinder 11, the second solenoid valve 19 for changing the operation state of the swing cylinder 17, and a controller for controlling the operation states of the pushing device, the first solenoid valve 18, and the second solenoid valve 19 based on detection signals of the position sensor, the magnetic switch 22, and the first optical fiber sensor 21.
In the invention, the lead screw motor 8 is a stepping motor, a driver 20 is arranged between the controller and the lead screw motor 8, the controller sends a pulse signal to the driver 20, and the driver 20 converts the pulse signal sent by the controller into an angular displacement and then sends the angular displacement to the lead screw motor 8.
Referring to fig. 1-3, in order to improve the efficiency of automatically filling the graphite electrode 24 with the mineral sample, the control system for automatically filling the graphite electrode with the mineral sample further includes a funnel motor 13 and a funnel frame 12, the funnel motor 13 is disposed below the linear cylinder 11, the funnel frame 12 is cross-shaped and is driven to rotate by the funnel motor 13, and a funnel 9 is fixed at the end of the funnel frame 12. Through setting up a plurality of funnels 9, can practice thrift the time of replacement funnel 9, improve degree of automation. In addition, a worm gear speed reducer 10 can be arranged between the funnel motor 13 and the funnel frame 12, the worm gear speed reducer 10 is used as a speed reduction transmission device between the funnel motor 13 and the funnel frame 12, and the funnel motor 13 is in pair
Preferably, the hopper 9 can be fed by other automated means.
A graphite electrode automatic filling ore sample control method comprises the following steps:
firstly, before the system is started to work, enough graphite electrodes 24 are ensured in the material box 1, and after no error is ensured, the control system starts to work;
step two, the controller controls the second electromagnetic valve 19 to be closed, so that the swing cylinder 17 swings, and the graphite electrode 24 in the material box 1 is screened in the material groove 23;
step three, the controller controls the pushing device to work, and pushes the push rod 2 to move, so that the graphite electrode 24 which is not filled in the material groove 23 is pushed to move into the material filling hole 14;
and step four, the controller controls the first electromagnetic valve 18 to be closed, so that the linear motor works to push the plug rod to plug the mineral sample in the funnel 9 into the graphite electrode 24.
Specifically, in the second step, whether the graphite electrode 24 falls into the trough 23 is detected by the first optical fiber sensor 21, and if the graphite electrode 24 is not detected by the first optical fiber sensor 21 and falls into the trough 23, the controller controls the swing cylinder 17 to shake again, and the process is repeated until the graphite electrode 24 falls into the trough 23.
Because of the influence of processing errors and other aspects, the length of the graphite electrode 24 in the material box 1 has uncontrollable errors, and the uncontrollable errors can cause the graphite electrode 24 to be damaged due to overlarge thrust of the push rod 2 or the graphite electrode 24 cannot be tightly plugged due to the undersize thrust, so the invention provides two control methods to solve the problem.
In the first method, referring to fig. 5 to 6, specifically, a support seat 3 is fixed on a slider, a push rod 2 is arranged in the support seat 3, a force compensation device is further arranged in the support seat 3, the force compensation device includes a pressure sensor 16 and a spring 15, the pressure sensor 16 is over against one end of the push rod 2 far away from a material plugging hole 14, one end of the spring 15 is fixed on the push rod 2, and the other end is fixed on the pressure sensor 16.
In step three, judge whether graphite electrode 24 is impaired through power compensation arrangement, when push rod 2 promoted graphite electrode 24 and gets into stopper material hole 14 and contradict to annular baffle, if the slider continues to drive push rod 2 and removes, spring 15 is compressed, and the atress of knowing spring 15 by hooke's law is:
F＝k·x (1)
the friction force applied to the graphite electrode 24 during the movement process is as follows:
Ff＝μ·FN(2)
the pressure sensor 16 detects:
Fforce of＝F+Ff(3)
In the formulae (1), (2) and (3), wherein F represents the force of the spring 15 during operation, k is a constant representing the elastic coefficient of the spring 15, x represents the deformation amount of the spring 15, and FfRepresents the value of the kinetic friction force during the movement of the graphite electrode 24, mu represents the kinetic friction coefficient,FNdenotes the positive pressure, F, of the graphite electrode 24Force ofRepresents the measurement value of the pressure sensor 16;
when 0 is more than F + Ff＜FPWhile indicating that the graphite electrode 24 is in the process of entering the plug aperture 14;
when F is presentP≤F+Ff≤FmaxAt this time, it indicates that the graphite electrode 24 has entered the position to be machined;
when F + Ff≥FmaxWhen the thrust is too large, the graphite electrode 24 is damaged;
wherein, FPIndicating the force, F, experienced by the pressure sensor 16 when the graphite electrode 24 just impacted the annular baffle in the plug bore 14maxRepresents the maximum pressure value that the graphite electrode 24 can withstand, above which the graphite electrode 24 will be damaged, FPAnd FmaxFor the experiment, the controller processes the feedback value of the pressure sensor 16 to judge whether the graphite electrode 24 is damaged, and further regulate and control the working state of the lead screw motor 8.
The gain effect of the force compensation device is that the rigid force is converted into the flexible force, the graphite electrode 24 can be fully prevented from being damaged in the material plugging process, and the device can improve the reliability of the system in the material plugging working process. If the pressure sensor 16 at the end of the push rod 2 reaches the set value FPWhen the pressure sensor 16 exceeds the set limit value F, representing the end of pushingmaxIf the pushing fails, the alarm sends out an alarm signal to remind the technician to remove the fault. In the force compensation device, a certain distance is arranged between a push rod 2 and a pressure sensor 16, a spring 15 with the rigidity of k is arranged between the push rod and the pressure sensor 16, the spring 15 is only influenced by the resistance of the graphite electrode 24 in the movement process when the push rod 2 acts to push the graphite electrode 24 to a material plugging hole 14, and the value fed back by the pressure sensor 16 is the friction value in the movement process; when the front end of the graphite electrode 24 is abutted to the annular baffle plate in the plugging hole 14, the spring 15 is at a critical point of being compressed, when the push rod 2 continues to push the graphite electrode 24, the spring 15 deforms, the value of the pressure sensor 16 in contact with the spring 15 begins to change, and when the detected value reaches a set value FPWhen it is, it represents a graphite electrodeThe electrodes 24 are in a suitable working environment, i.e. the graphite electrodes 24 can be filled with mineral aggregate.
In the second method, referring to fig. 7, specifically, a second optical fiber sensor 25 is disposed on the lead screw module 4, and the controller controls a detection signal of the second optical fiber sensor 25 to regulate and control the working state of the pushing device.
In the third step, the working position of the graphite electrode 24 is defined according to the position of the light source of the second optical fiber sensor 25, the distance from one end of the graphite electrode 24 falling into the trough 23, which is close to the blanking hole 14, to the middle of the blanking hole 14 is divided into two sections, the first section is the distance from one end of the graphite electrode 24 falling into the trough 23, which is close to the blanking hole 14, to the second optical fiber sensor 25, the second section is the distance from the light source of the second optical fiber sensor 25, which is determined by the length of the graphite electrode 24, the length of the second section is constant, when the push rod 2 pushes the graphite electrode 24 to move forward until one end of the graphite electrode 24 shields the light source of the second optical fiber sensor 25, photoelectric sensor 6 feeds back the signal to the controller, and 8 movements of lead screw motor are controlled to the controller, make push rod 2 promote graphite electrode 24 and remove to plug material hole 14 middle part, and in this process, the pulse number of 8 movements of lead screw motor is:
in the formula (4), P represents the number of pulses required for controlling the lead screw motor 8 to help the graphite electrode 24 move from the second optical fiber sensor 25 to the middle of the plug hole 14, x represents the distance from the light source of the second optical fiber sensor 25 to the middle of the plug hole 14, n represents the number of pulses required for the lead screw motor 8 to rotate one turn, and S represents the lead of the lead screw.
The controller, solenoid valve and driver 20 are installed in the electrical cabinet. The position sensor, the magnetic switch 22, the first optical fiber sensor 21 and the second optical fiber sensor 25 are connected to an I/O input port of the controller, and the solenoid valve and driver 20 are connected to an I/O output port of the controller.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a graphite electrode automatic filling ore sample control system which characterized in that includes:
the material screening module comprises a material box, a swinging cylinder and a material groove which are arranged from top to bottom, wherein a plurality of graphite electrodes which are not filled are arranged in the material box, a discharge hole is formed in the bottom of the material box, and the swinging cylinder is used for swinging the material box to enable the graphite electrodes to fall into the material groove from the material box;
the plugging module comprises a funnel, a linear cylinder and a plugging rod, wherein a plugging hole is transversely formed in the bottom of the funnel, an annular baffle plate used for resisting the movement of the graphite electrode is arranged in the middle of the plugging hole, an ore sample is arranged in the funnel, and the plugging rod is fixed at the tail end of a piston rod extending out of the linear cylinder and is opposite to one end of the plugging hole;
the motion module comprises a push rod and a pushing device, the push rod is arranged on the pushing device and is opposite to the other end of the material plugging hole, the pushing device is used for pushing the push rod to move, and the push rod further pushes the graphite electrode in the material groove to move into the material plugging hole;
the signal detection module comprises a position sensor, a magnetic switch and a first optical fiber sensor, wherein the position sensor is used for determining the position of the pushing device, the magnetic switch is used for detecting the action states of the linear cylinder and the swing cylinder, and the first optical fiber sensor is used for detecting whether the graphite electrode falls into the trough or not;
the output control module comprises an electromagnetic valve and a controller, the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is used for changing the action state of the linear cylinder, the second electromagnetic valve is used for changing the action state of the swing cylinder, and the controller regulates and controls the working states of the pushing device, the first electromagnetic valve and the second electromagnetic valve based on detection signals of a position sensor, a magnetic switch and a first optical fiber sensor.
2. The graphite electrode automatic filling ore sample control system of claim 1, characterized in that: the pushing device comprises a lead screw module, the lead screw module comprises a lead screw, a lead screw motor for driving the lead screw to rotate and a sliding block sliding on the lead screw, and the push rod is arranged on the sliding block.
3. The graphite electrode automatic filling ore sample control system of claim 2, characterized in that: the material filling device is characterized in that a supporting seat is fixed on the sliding block, the push rod is arranged in the supporting seat, a force compensation device is further arranged in the supporting seat and comprises a pressure sensor and a spring, the pressure sensor is right opposite to one end, away from the material filling hole, of the push rod, one end of the spring is fixed on the push rod, and the other end of the spring is fixed on the pressure sensor.
4. The graphite electrode automatic filling ore sample control system of claim 3, characterized in that: the lead screw module is provided with a second optical fiber sensor, and the controller controls a detection signal of the second optical fiber sensor to regulate and control the working state of the pushing device.
5. The graphite electrode automatic filling ore sample control system of claim 1, characterized in that: the position sensor comprises a negative limit sensor, a positive limit sensor and a photoelectric sensor, the negative limit sensor and the positive limit sensor are respectively arranged at two ends of the lead screw and used for limiting the position of the sliding block, the photoelectric sensor is arranged between the limit sensor and the positive limit sensor, and the light source position of the photoelectric sensor is the original position.
6. The graphite electrode automatic filling ore sample control system of claim 1, characterized in that: graphite electrode automatic filling ore sample control system still includes funnel motor and funnel stand, the funnel motor is established the below of sharp cylinder, the funnel stand is the cross and passes through the funnel motor drives the rotation, the end of funnel stand all is fixed with the funnel.
7. A control method for automatically filling an ore sample with a graphite electrode, which uses the control system for automatically filling an ore sample with a graphite electrode of the filling instrument of claim 4, is characterized by comprising the following steps:
the method comprises the following steps that firstly, before a system is started to work, sufficient graphite electrodes are ensured to be arranged in a material box, and after no error is ensured, the system is controlled to start working;
step two, the controller controls the second electromagnetic valve to be closed, so that the swing cylinder swings, and the graphite electrode in the material box is screened in the material groove;
thirdly, the controller controls the pushing device to work to push the push rod to move, so that the graphite electrode which is not filled in the material groove is pushed to move into the material filling hole;
and step four, the controller controls the first electromagnetic valve to be closed, so that the linear motor works to push the plug rod to plug the ore sample in the funnel into the graphite electrode.
8. The method for controlling automatic filling of the graphite electrode with the ore sample according to claim 7, wherein: and in the second step, whether the graphite electrode falls into the trough or not is detected through the first optical fiber sensor, if the graphite electrode is not detected by the first optical fiber sensor and falls into the trough, the controller controls the swing cylinder to shake again, and the process is repeated until the graphite electrode falls into the trough.
9. The method for controlling automatic filling of the graphite electrode with the ore sample according to claim 7, wherein: in step three, judge whether impaired through power compensation arrangement graphite electrode, when the push rod promoted graphite electrode and get into the stopper material hole and contradict annular baffle, if the slider continues to drive the push rod and removes, the spring is compressed, and the atress of knowing the spring by hooke's law is:
F＝k·x (1)
the friction force of the graphite electrode in the motion process is as follows:
Ff＝μ·FN(2)
the pressure sensor detection value is:
Fforce of＝F+Ff(3)
In the formulas (1), (2) and (3), wherein F represents the value of the spring force in the working process, k is a constant and represents the elastic coefficient of the spring, x represents the deformation amount of the spring, and FfRepresents the value of the kinetic friction force during the movement of the graphite electrode, mu represents the kinetic friction coefficient, FNDenotes the positive pressure of the graphite electrode, FForce ofA measurement value representing a pressure sensor;
when 0 is more than F + Ff＜FPWhen the graphite electrode is entering the plugging hole, the graphite electrode is in the process of entering the plugging hole;
when F is presentP≤F+Ff≤FmaxWhen the machining tool is used, the graphite electrode is positioned at the position to be machined;
when F + Ff≥FmaxWhen the thrust is too large, the graphite electrode is damaged;
wherein, FPRepresenting the force to which the pressure sensor is subjected when the graphite electrode just abuts the annular baffle in the plug hole, FmaxRepresents the maximum pressure value that the graphite electrode can withstand, above which the graphite electrode will be damaged, FPAnd FmaxFor the experiment, the controller is used for processing the feedback value of the pressure sensor to judge whether the graphite electrode is damaged or not, and further regulate and control the working state of the lead screw motor.
10. The method for controlling automatic filling of the graphite electrode with the ore sample according to claim 7, wherein: in the third step, the working position of the graphite electrode is limited according to the position of the light source of the second optical fiber sensor, the distance from one end, close to the material plugging hole, of the graphite electrode falling into the trough to the middle part of the material plugging hole is divided into two sections, the first section is the distance from one end, close to the material plugging hole, of the graphite electrode falling into the trough to the second optical fiber sensor, the second section is the distance from the light source of the second optical fiber sensor to the middle part of the material plugging hole, the length of the first section is determined by the length of the graphite electrode, the length of the second section is constant, when the push rod pushes the graphite electrode to move forwards to one end of the graphite electrode to cover the light source of the second optical fiber sensor, the photoelectric sensor feeds back a signal to the controller, the controller controls the movement of the lead screw motor, so that the push rod pushes the graphite electrode to move to the:
in the formula (4), P represents the number of pulses required for controlling the lead screw motor to help the graphite electrode move from the second optical fiber sensor to the middle of the plug hole, x represents the distance from the light source of the second optical fiber sensor to the middle of the plug hole, n represents the number of pulses required for the lead screw motor to rotate for one turn, and S represents the lead of the lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924722.9A CN110726599B (en) | 2019-09-27 | 2019-09-27 | Control system and control method for automatically filling graphite electrode into ore sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924722.9A CN110726599B (en) | 2019-09-27 | 2019-09-27 | Control system and control method for automatically filling graphite electrode into ore sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110726599A true CN110726599A (en) | 2020-01-24 |
| CN110726599B CN110726599B (en) | 2022-03-04 |
Family
ID=69218532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910924722.9A Active CN110726599B (en) | 2019-09-27 | 2019-09-27 | Control system and control method for automatically filling graphite electrode into ore sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110726599B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007006179A1 (en) * | 2005-07-14 | 2007-01-18 | Blincofa Biomedical Technology Corp. | A graphite electrode used in detection device for analyzing trace amount of organic substances and its manufacturing method |
| CN108801750A (en) * | 2018-06-08 | 2018-11-13 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument |
| CN108801751A (en) * | 2018-06-08 | 2018-11-13 | 湖北省地质勘查装备中心 | Powder funnel for filling out stick |
| CN208278355U (en) * | 2018-06-08 | 2018-12-25 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument filler module |
| CN208366823U (en) * | 2018-06-08 | 2019-01-11 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument push rod module |
-
2019
- 2019-09-27 CN CN201910924722.9A patent/CN110726599B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007006179A1 (en) * | 2005-07-14 | 2007-01-18 | Blincofa Biomedical Technology Corp. | A graphite electrode used in detection device for analyzing trace amount of organic substances and its manufacturing method |
| CN108801750A (en) * | 2018-06-08 | 2018-11-13 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument |
| CN108801751A (en) * | 2018-06-08 | 2018-11-13 | 湖北省地质勘查装备中心 | Powder funnel for filling out stick |
| CN208278355U (en) * | 2018-06-08 | 2018-12-25 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument filler module |
| CN208366823U (en) * | 2018-06-08 | 2019-01-11 | 湖北省地质勘查装备中心 | Full-automatic miberal powder fills out stick instrument push rod module |
Non-Patent Citations (1)
| Title |
|---|
| 吴专: "某自动填料装置的结构及工艺参数优化研究", 《中国设备工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110726599B (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106940274B (en) | Full-automatic rheological straight shear device and experimental operation method thereof | |
| CN1903698B (en) | Multipoint synchronous lifting device and its lifting method | |
| CN104713788A (en) | Strain-control type tension-shearing direct shear apparatus | |
| CN106568628B (en) | Soil sample preparation experimental equipment | |
| CN112113529A (en) | Planetary gear reducer back clearance detection device | |
| CN110726599B (en) | Control system and control method for automatically filling graphite electrode into ore sample | |
| CN110260962A (en) | Powder micro-weighing device | |
| CN110685686A (en) | Continuous mining machine cutting control system, working method thereof and continuous mining machine | |
| CN201859105U (en) | Special direct shear apparatus for grain | |
| CN113638689A (en) | Quantitative drilling device and method | |
| CN101718697A (en) | Electric-control rock scrap image collecting analyzer | |
| CN113277049B (en) | Multifunctional bionic robot fish for water quality monitoring | |
| CN206573084U (en) | A kind of sensing mechanism for glitch detection | |
| CN106441877B (en) | A kind of reaction plate test equipment and method | |
| CN210401593U (en) | Motor load testing mechanism | |
| CN207036419U (en) | Worm and gear driver endurance testing device | |
| CN208392423U (en) | Automatic feeding device is used in a kind of production of degradation plastic | |
| CN208374672U (en) | A kind of Butt Assembling device for high-power engine | |
| CN208462523U (en) | A kind of quantitative plus native machine | |
| CN110823703A (en) | Hydraulic loading controller | |
| CN216284782U (en) | Automatic density detection device for pre-expander | |
| CN220398939U (en) | Multi-type concentrate sampling device | |
| CN111707496A (en) | Detection sampling device for mining | |
| CN218787924U (en) | Muck sampling device for muck truck | |
| CN206056839U (en) | A kind of pulling capacity test machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |