CN113559967B - Full-automatic silicon carbide micro powder wet method cross circulation grinding system and processing method thereof - Google Patents
Full-automatic silicon carbide micro powder wet method cross circulation grinding system and processing method thereof Download PDFInfo
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- CN113559967B CN113559967B CN202110964387.2A CN202110964387A CN113559967B CN 113559967 B CN113559967 B CN 113559967B CN 202110964387 A CN202110964387 A CN 202110964387A CN 113559967 B CN113559967 B CN 113559967B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
- B02C2/10—Crushing or disintegrating by gyratory or cone crushers concentrically moved; Bell crushers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
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Abstract
The invention discloses a full-automatic silicon carbide micro powder wet method cross circulation grinding system, which belongs to the technical field of silicon carbide and comprises a circulation cross grinding module and a control module, wherein the circulation grinding module is connected with a slurry concentration adjusting module, a slurry temperature adjusting module and a current adjusting module, the slurry concentration adjusting module comprises a slurry fluidity adjusting module and a slurry PH adjusting module, and the control module is respectively and electrically connected with the circulation grinding module, the slurry temperature adjusting module, the current adjusting module, the slurry fluidity adjusting module and the slurry PH adjusting module.
Description
Technical Field
The invention relates to the technical field of silicon carbide, in particular to a full-automatic silicon carbide micro powder wet method cross circulation grinding system and a processing method thereof.
Background
The silicon carbide micropowder is micropowder processed by natural quartz (SiO 2) or fused quartz (amorphous SiO2 of natural quartz after high-temperature melting and cooling) through multiple processes such as crushing, ball milling (or vibration and jet milling), flotation, acid washing purification, high-purity water treatment and the like. The ball mill is a key device for crushing materials after the materials are crushed. This type of mill is one in which a number of steel balls are inserted into its cylinder as grinding media.
It is widely used in cement, silicate products, novel building materials, refractory materials, chemical fertilizers, mineral processing of black and nonferrous metals, glass ceramics and other production industries, and carries out dry or wet grinding on various ores and other grindability materials. The ball mill is suitable for grinding various ores and other materials, is widely used in the industries of mineral separation, building materials, chemical industry and the like, and can be divided into dry type and wet type ore grinding modes. According to different ore discharging modes, the two types of the grid type and the overflow type can be realized.
The grinding of current carborundum miropowder, mainly according to workman's experience control ball mill's rotational speed and operating time, subjectivity is strong, and product quality is uneven, and a large amount of intervention of workman simultaneously seriously influence carborundum miropowder grinding efficiency, and current ball mill is after grinding a period in addition, and the granularity diameter that accompanies carborundum miropowder reduces, and grinding medium and carborundum miropowder contact surface reduces, and the grinding effect weakens, can't reach appointed particle diameter demand, influences product quality.
Disclosure of Invention
The full-automatic silicon carbide micro powder wet method cross circulation grinding system and the processing method thereof can realize automatic grinding of the silicon carbide micro powder, can meet the automatic adjustment of slurry temperature, slurry PH value and slurry viscosity, can realize automatic selection and addition of silicon carbide media according to the change of the current of a driving motor, have high degree of automation, and are beneficial to improving the grinding efficiency and quality of the silicon carbide micro powder.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the full-automatic silicon carbide micro powder wet method cross circulation grinding system comprises a circulation cross grinding module and a control module, wherein the circulation grinding module is connected with a slurry concentration adjusting module, a slurry temperature adjusting module and a current adjusting module, the slurry concentration adjusting module comprises a slurry fluidity adjusting module and a slurry PH adjusting module, and the control module is respectively and electrically connected with the circulation grinding module, the slurry temperature adjusting module, the current adjusting module, the slurry fluidity adjusting module and the slurry PH adjusting module.
Preferably, the circulating cross grinding module comprises a storage module, the storage module is connected with a sand mill, a feed pipe is arranged between a discharge port of the storage module and a feed end of the sand mill, a pneumatic diaphragm pump is arranged on the feed pipe, a discharge pipe is arranged between the discharge end of the sand mill and the feed end of the storage module, a plurality of medium storage tanks are connected in parallel on the feed pipe between the pneumatic diaphragm pump and the sand mill, different medium storage tanks store mediums with different particle size diameters, an electromagnetic valve is arranged between the medium storage tanks and the feed pipe, and the sand mill, the pneumatic diaphragm pump and the electromagnetic valve are all electrically connected with the control module;
the material storage module comprises two grinding material storage tanks which are connected in parallel on the feeding pipe, a liquid level sensor is arranged in the grinding material storage tanks, a first three-way control valve is arranged between the pneumatic diaphragm pump and the two grinding material storage tanks, a second three-way control valve is arranged between the sand mill and the two grinding material storage tanks, and the first three-way control valve, the second three-way control valve and the liquid level sensor are mutually linked and are electrically connected with the control module.
Preferably, the control module comprises a controller positioned at one side of the grinding storage tank, and an operation panel is installed on the controller.
Preferably, the slurry fluidity adjusting module comprises a modifier storage tank communicated with the grinding storage tank, and the CA solution is stored in the modifier storage tank.
Preferably, the slurry PH adjusting module comprises an adjusting tank communicated with the grinding storage tank and a PH value detector arranged in the grinding storage tank, a material pump is arranged between the adjusting tank and the grinding storage tank, alkali liquor is stored in the adjusting tank, and the PH value detector is electrically connected with the controller uniformly through the material pump.
Preferably, the sand mill comprises a tank body, a feeding pipe and a discharging pipe are respectively arranged at two ends of the tank body, a rotating shaft is arranged in the tank body, a plurality of uniformly distributed dispersing discs are arranged on the rotating shaft, one end, close to the discharging pipe, of the rotating shaft penetrates through the tank body and is connected with a driving motor, and the driving motor is electrically connected with the current adjusting module.
Preferably, the current adjusting module comprises a current detector for detecting the current of the driving motor, and the current detector is linked with the electromagnetic valve and is electrically connected with the controller.
Preferably, the slurry temperature adjusting module comprises a spiral cooling pipe and a temperature detector, wherein the spiral cooling pipe and the temperature detector are installed on the grinding storage tank, the temperature detector is installed in the position close to the discharging pipe, two ends of the spiral cooling pipe are respectively connected with a cold water storage tank and a water storage tank, a water pump is arranged between the cold water storage tank and the spiral cooling pipe and communicated with the spiral cooling pipe, and the temperature detector is in linkage with the water pump and is electrically connected with the control box.
Preferably, the dispersing discs are provided with a plurality of through holes with different shapes, and the through holes with the same shape on the adjacent distributing discs are distributed in a staggered way.
Preferably, the medium storage tanks are provided with 3 medium storage tanks, the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III are stored in the 3 medium storage tanks at one time, and the particle size diameters of the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III are sequentially reduced.
Preferably, the processing method of the full-automatic silicon carbide micro powder wet grinding system comprises the following processing steps:
s1: preparing materials, namely, storing silicon carbide media I, silicon carbide media II and silicon carbide media III with different particle diameters in 3 different medium storage tanks, and guiding silicon carbide micro powder slurry with initial concentration of 10S into one grinding storage tank, wherein the other grinding storage tank is in an empty tank state;
s2: the method comprises the steps of performing primary circulation crushing, setting the fluctuation range of the current of a driving motor to be 45 A+/-3A by using a control panel, detecting the current of the driving motor by using a current detector, controlling a first three-way control valve and a second three-way control valve by using a controller to ensure the smoothness of a slurry conveying route (a polishing storage tank with slurry stored therein-a sand mill-an empty tank state), starting a pneumatic diaphragm pump by using the controller to guide the slurry in the polishing storage tank into the sand mill, continuously grinding the injected slurry by using the sand mill, detecting the liquid level of the slurry stored in the polishing storage tank in an empty tank state by using a liquid level sensor, switching the storage states in the two polishing storage tanks after the slurry is completely discharged by using the liquid level sensor, repeatedly flowing the slurry in the process by using the first three-way control valve and the second three-way control valve, detecting the current in the controller, and inputting the silicon carbide particles into a large-sized silicon carbide medium according to the current of the silicon carbide grinding machine, and reducing the current of the silicon carbide medium when the silicon carbide medium is input into the silicon carbide grinding machine, and the silicon carbide medium is large in the diameter of the silicon carbide medium, and the silicon carbide medium is supplied by using the controller, then the next step is carried out;
s3: setting the fluctuation range of the current of a driving motor to 45 A+/-3A by using a control panel, detecting the current of the driving motor by using a current detector, controlling a first three-way control valve and a second three-way control valve by using a controller to ensure the smoothness of a slurry conveying route (a polishing storage tank with slurry stored therein-a sand mill-an empty tank state), starting a pneumatic diaphragm pump by using the controller to guide the slurry in the polishing storage tank into the sand mill, continuously grinding the injected slurry by the sand mill, detecting the liquid level of the polishing storage tank storing the slurry which is crushed once by using a liquid level sensor, switching the storage states in the two polishing storage tanks after the slurry is completely discharged in the polishing storage tank storing the slurry which is crushed once, repeatedly flowing the slurry in the process by using the first three-way control valve and the second three-way control valve, realizing the circulating flow of the slurry in the polishing storage tank, detecting the slurry in the medium by using the pneumatic diaphragm pump, and inputting the silicon carbide particles into the silicon carbide medium according to a large-sized silicon carbide medium when the current is detected by using the discharge pipe, and the silicon carbide medium is fed into the silicon carbide medium, and the silicon carbide medium is greatly charged by using the controller when the silicon carbide medium is charged into the two-carbide medium, and the silicon carbide medium is greatly charged into the grinding machine, then the next step is carried out;
s4: setting the fluctuation range of the current of a driving motor to be 45 A+/-3A by using a control panel, detecting the current of the driving motor by using a current detector, controlling a first three-way control valve and a second three-way control valve by using a controller to ensure the smoothness of a slurry conveying route (a polishing storage tank with slurry stored therein-a sand mill-an empty tank state), starting the pneumatic diaphragm pump by using the controller to guide the slurry in the polishing storage tank into the sand mill, continuously grinding the injected slurry by using the sand mill, detecting the liquid level of the polishing storage tank with the ground slurry subjected to secondary crushing by using a liquid level sensor, converting the storage states in the two polishing storage tanks after the slurry subjected to primary crushing is completely discharged, repeatedly flowing the slurry in the process by using the first three-way control valve and the second three-way control valve, detecting the three-way control valve by using the discharge pipe, and detecting the three-way control valve, and finishing the three-way control valve by using the three-way control valve, and finishing the three-way control valve;
and S5, grinding slurry in the storage tank to separate a silicon carbide medium I, a silicon carbide medium II and a silicon carbide medium III, and then dehydrating and drying the silicon carbide slurry to obtain silicon carbide micro powder.
Preferably, the viscosity and the PH value of the slurry are detected before the steps of primary circulation crushing, secondary circulation crushing and repairing, a controller is used for controlling a material pump to respectively guide alkali liquor and a modifier in the regulating tank and the modifier storage tank into the grinding storage tank for adjusting the viscosity and the PH value of the slurry, the viscosity of the slurry is kept to be 10S, the PH value of the slurry is kept to be 8-9.5, the concentration of the slurry is accurately controlled, and the slurry is ensured to be in an optimal grinding state.
The beneficial effects of the invention are as follows:
1. according to the invention, the circulating grinding module is matched with different adjusting modules, and under the control of the control module, the automatic grinding of the silicon carbide micro powder can be realized, the degree of automation is high, and the grinding efficiency and quality of the silicon carbide micro powder can be improved;
2. according to the invention, the linkage design of the current sensor and the electromagnetic valve is utilized to realize automatic addition of silicon carbide media, and grinding media with different granularities are added in the working process of the sand mill, so that the silicon carbide slurry is promoted to fully contact with the grinding media, and the grinding effect of the silicon carbide slurry can be effectively improved;
3. according to the invention, the grinding storage tank is communicated with the discharge pipe through the feed pipe, the linkage design of the first three-way control valve and the second three-way control valve is utilized to realize the cross flow of slurry, the separation and storage of the slurry before and after grinding are completed, the slurry can be ensured to be sufficiently ground, the concentration of the slurry entering the sand mill can be ensured to be more stable, the addition of a silicon carbide medium can be accurately controlled, the grinding effect is favorably improved, the feedback control is realized through the liquid level sensor, the automatic circulation flow of the slurry is completed, and the grinding efficiency and quality are favorably improved;
4. according to the invention, by means of linkage design of the current detector and the electromagnetic valve, the load change of the sand mill can be determined according to the change of the current of the driving motor for driving the rotating shaft to rotate, and the load of the sand mill is changed by adding the grinding medium, so that the sand mill reaches the optimal rotating speed, the automatic adjustment of the rotating speed of the sand mill is realized, and the grinding effect of silicon carbide slurry can be effectively improved;
5. according to the invention, the temperature sensor is matched with the spiral cooling pipe, so that the automatic control of the temperature of the silicon carbide slurry is realized, and the damage of a sand mill caused by overhigh temperature of the silicon carbide slurry in the grinding process can be effectively avoided;
6. according to the invention, CA is added into the silicon carbide slurry as a modifier, so that the viscosity of the silicon carbide slurry can be effectively regulated, and the rapid flow of the silicon carbide slurry can be realized;
7. according to the invention, the PH detector is matched with the slurry to realize automatic adjustment of the PH value of the silicon carbide, so that the concentration of the silicon carbide slurry is adjusted, and the fluidity of the silicon carbide slurry can be further improved;
8. according to the invention, through the through holes with different shapes on the dispersing discs, and the through holes with different shapes on the same position on the adjacent dispersing discs, the optimal dispersing effect of the dispersing discs at different positions is positioned at different positions of the sand mill, so that the dispersing effect of the silicon carbide slurry can be effectively improved, and the grinding quality of the silicon carbide slurry is promoted.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a full-automatic silicon carbide micro powder wet process cross-circulation grinding system.
In the figure: 1-grinding storage tank, 2-sand mill, 3-pneumatic diaphragm pump, 4-inlet pipe, 5-first three-way control valve, 6-discharging pipe, 7-second three-way control valve, 8-medium storage tank, 9-solenoid valve, 10-modifier storage tank, 11-adjustment tank, 12-PH value detector, 13-material pump, 14-controller, 15-operating panel, 16-temperature detector, 17-spiral cooling pipe, 18-cold water storage tank, 19-water storage tank, 20-water pump, 21-current detector, 201-driving motor.
Detailed Description
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
The full-automatic silicon carbide micro powder wet method cross circulation grinding system shown in fig. 1 comprises a circulation cross grinding module and a control module, wherein the circulation cross grinding module is used for grinding silicon carbide micro powder slurry to enable the silicon carbide micro powder to reach a specified size through grinding, the circulation cross grinding module is connected with a slurry concentration adjusting module, a slurry temperature adjusting module and a current adjusting module, the slurry concentration adjusting module comprises a slurry fluidity adjusting module and a slurry PH adjusting module, the control module is respectively electrically connected with the circulation cross grinding module, the slurry temperature adjusting module, the current adjusting module, the slurry fluidity adjusting module and the slurry PH adjusting module, and the circulation cross grinding module is matched with different adjusting modules.
The circulating cross grinding module comprises a storage module, wherein the storage module is connected with a sand mill 2, a feed pipe 4 is arranged between a discharge port of the storage module and a feed end of the sand mill 2 and is communicated with the discharge port of the sand mill 2, a pneumatic diaphragm pump 3 is arranged on the feed pipe 4, a discharge pipe 6 is arranged between the discharge end of the sand mill 2 and the feed port of the storage module and is communicated with the discharge port of the sand mill 2, a plurality of medium storage tanks 8 are connected in parallel on the feed pipe 4 between the pneumatic diaphragm pump 3 and the sand mill 2, different mediums with different granularity diameters are stored in the medium storage tanks 8, an electromagnetic valve 9 is arranged between the medium storage tanks 8 and the feed pipe 4 and is communicated with the sand mill 2, the pneumatic diaphragm pump 3 and the electromagnetic valve 9 are all electrically connected with the control module;
the material storage module comprises two grinding material storage tanks 1 connected in parallel on a material feeding pipe 4, a liquid level sensor is installed in each grinding material storage tank 1, a first three-way control valve 5 is arranged between each pneumatic diaphragm pump 3 and two corresponding grinding material storage tanks 1 and is communicated with each other, a second three-way control valve 7 is arranged between each grinding mill 2 and each grinding material storage tank 1 and is communicated with each other, and the first three-way control valve 5, the second three-way control valve 7 and the liquid level sensor are mutually linked and are electrically connected with the control module;
the medium storage tanks 8 are provided with 3 medium storage tanks, the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III are stored in the 3 medium storage tanks 8 at one time, the particle size diameters of the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III are sequentially reduced, and the shape of the silicon carbide medium III is approximate to a circle;
during operation, firstly, the slurry to be ground is stored in one grinding storage tank 1, then the slurry in the grinding storage tank 1 is led into the sand mill 2 by utilizing a first three-way control valve 5 and a pneumatic diaphragm pump 3, the slurry level sensor in the grinding storage tank 1 is utilized to detect the slurry level, the supplied slurry is continuously ground through the sand mill 2, the slurry processed by the sand mill 2 is discharged through a discharge pipe 6, then the ground slurry is conveyed into the other grinding storage tank 1 by utilizing a second three-way control valve 7, until the slurry in the grinding storage tank 1 which is not ground is completely led out and enters the other grinding storage tank 1 after being ground by the sand mill 2, then the slurry in the process flows by adjusting the first three-way control valve 5 and the second three-way control valve 7, meanwhile, the silicon carbide media with different particle diameters in the medium storage tank 8 are added to continuously grind, the silicon carbide media with different particle diameters in the grinding process is crushed, the silicon carbide media with different particle diameters in the grinding process is fully reduced, the problem that the silicon carbide media with the particle diameters of the silicon carbide media is crushed is reduced is fully is solved, and the particle diameters of the silicon carbide media with the particle size being crushed is fully reduced.
The control module comprises a controller 14 positioned at one side of the grinding storage tank 1, an operation panel 15 is installed on the controller 14, and the operation panel 15 is utilized to input limit data in the controller 14, so that automation operation of different adjusting modules is facilitated.
The slurry fluidity adjusting module comprises a modifier storage tank 10 communicated with the grinding storage tank 1, wherein a CA solution is stored in the modifier storage tank 10, and the fluidity of slurry is improved by using a modifier, so that the running stability of a system can be improved; the slurry PH adjusting module comprises an adjusting tank 11 communicated with the grinding storage tank 1 and a PH value detector 12 arranged in the grinding storage tank 1, a material pump 13 is arranged between the adjusting tank 11 and the grinding storage tank 1 and is communicated with the grinding storage tank 1, the flow direction of the slurry in the adjusting tank 11 is realized through the material pump 13, alkali liquor is stored in the adjusting tank 11, the PH value detector 12 is electrically connected with the material pump 13 through a controller 14, the regulation and control of PH value is improved, the fluctuation of PH value in the range of 8-9.5 is kept, the concentration of the slurry can be finely adjusted, and the optimal concentration of the slurry is reached.
The sand mill 2 comprises a tank body, a feed pipe 4 and a discharge pipe 6 are respectively arranged at two ends of the tank body, a rotating shaft is arranged in the tank body, a plurality of uniformly distributed dispersing discs are arranged on the rotating shaft, one end, close to the discharge pipe 6, of the rotating shaft penetrates through the tank body and is connected with a driving motor 201, the driving motor 201 is set as a servo motor, the driving motor 201 drives the dispersing discs on the rotating shaft to stably rotate, and slurry entering the sand mill 2 is dispersed by the dispersing discs;
the dispersing discs are provided with a plurality of through holes with different shapes, and the through holes with the same shape on the adjacent distributing discs are distributed in a staggered way, so that the optimal dispersing effect of the dispersing discs at different positions is positioned at different positions of the sand mill 2, the dispersing effect of the silicon carbide slurry can be effectively improved, and the grinding quality of the silicon carbide slurry is promoted;
the driving motor 201 is electrically connected with the current adjusting module, the current adjusting module comprises a current detector 21 for detecting the current of the driving motor 201, the current detector 21 is linked with the electromagnetic valve 9 and is electrically connected with the controller 14, the load change of the sander 2 can be determined according to the change of the current of the driving motor 201 driving the rotating shaft by utilizing the linkage design of the current detector 21 and the electromagnetic valve 9, the load of the sander 2 is changed by adding grinding media, the sander 2 reaches the optimal rotating speed, the automatic adjustment of the rotating speed of the sander 2 is realized, and the grinding effect of silicon carbide slurry can be effectively improved.
The slurry temperature regulation module comprises a spiral cooling pipe 17 and a temperature detector 16 which are arranged on the grinding storage tank 1, the temperature detector 16 is arranged close to the discharging pipe 6, two ends of the spiral cooling pipe 17 are respectively connected with a cold water storage tank 18 and a water storage tank 19, a water pump 20 is arranged between the cold water storage tank 18 and the spiral cooling pipe 17 and is communicated with the spiral cooling pipe 17, the temperature detector 16 is linked with the water pump 20 and is electrically connected with the control box, the temperature sensor is matched with the spiral cooling pipe 17, the automatic control of the temperature of silicon carbide slurry is realized, and the damage of the sand mill 2 caused by overhigh temperature of the silicon carbide slurry in the grinding process can be effectively avoided.
The full-automatic silicon carbide micro powder wet grinding system can be additionally provided with a data acquisition and analysis system, special software is developed, an intuitive graph is established between the numerical values of the data obtained in the working process of the circulating cross grinding module, such as the current change of the driving motor 201, the slurry temperature change, the slurry PH value change, the slurry fluidity change and the like, and the granularity of the slurry, and the optimal grinding state of the slurry is determined by utilizing the relation between different numerical values and the curves.
The processing method of the full-automatic silicon carbide micro powder wet grinding system comprises the following steps:
s1: preparing materials, namely, storing silicon carbide media I, silicon carbide media II and silicon carbide media III with different particle diameters in 3 different medium storage tanks 8, and guiding silicon carbide micro powder slurry with initial concentration of 10S into one grinding storage tank 1, wherein the other grinding storage tank 1 is in an empty tank state;
s2: the method comprises the steps of performing primary circulation crushing, setting the fluctuation range of the current of a driving motor 201 to 45 A+/-3A by using a control panel, detecting the current of the driving motor 201 by using a current detector 21, controlling a first three-way control valve 5 and a second three-way control valve 7 by using a controller 14 to ensure the smoothness of a slurry conveying route (a grinding storage tank 1 storing slurry-a grinding storage tank 1 in an empty tank state of a sand mill 2), starting a pneumatic diaphragm pump 3 by using the controller 14 to guide the slurry in the grinding storage tank 1 into the sand mill 2, continuously grinding the injected slurry by the sand mill 2, injecting the ground slurry into the grinding storage tank 1 in the empty tank state by using a discharging pipe 6, detecting the liquid level of the grinding storage tank 1 storing the slurry which is not ground by using a liquid level sensor, after the slurry in the grinding storage tanks 1 storing the unground slurry is completely discharged, the storage states in the two grinding storage tanks 1 are converted, then the slurry flow in the process is repeated by adjusting the first three-way control valve 5 and the second three-way control valve 7, so that the cyclic grinding of the slurry is realized, in the process, the controller 14 controls the solenoid valve 9 communicated with the first silicon carbide medium to be opened when the detection current is larger than the input value due to the larger granularity of the silicon carbide micro powder in the slurry and the larger load of the driving motor 201 according to the detection of the current detector 21, the grinding of the slurry is finished by utilizing the first silicon carbide medium, the granularity diameter of the silicon carbide micro particles in the slurry is reduced, finishing primary grinding of the slurry when the long-time working current of the sand mill 2 is kept within the input rated current range, and then carrying out the next step;
s3: setting the fluctuation range of the current of the driving motor 201 to 45 A+/-3A by using a control panel, detecting the current of the driving motor 201 by using the current detector 21, controlling the first three-way control valve 5 and the second three-way control valve 7 by using the controller 14 to ensure the smoothness of a slurry conveying route (a grinding storage tank 1 storing slurry-a grinding storage tank 1 in a grinding mill 2-empty state), starting the pneumatic diaphragm pump 3 by using the controller 14 to guide the slurry in the grinding storage tank 1 into the grinding mill 2, continuously grinding the injected slurry by using the grinding mill 2, injecting the ground slurry into the grinding storage tank 1 in the empty state by using the discharging pipe 6, detecting the liquid level of the grinding storage tank 1 storing the slurry which is crushed once by using the liquid level sensor, after the slurry in the grinding storage tanks 1 for storing the slurry which is crushed once is completely discharged, the storage states in the two grinding storage tanks 1 are converted, then the slurry flow in the process is repeated by adjusting the first three-way control valve 5 and the second three-way control valve 7, so that the cyclic grinding of the slurry is realized, in the process, the controller 14 controls the solenoid valve 9 communicated with the second silicon carbide medium to open when the detection current is larger than the input value due to the larger granularity of the silicon carbide micro powder in the slurry and the larger load of the driving motor 201 according to the detection of the current detector 21, the second grinding of the slurry is completed by utilizing the second silicon carbide medium, the granularity diameter of the silicon carbide micro particles in the slurry is reduced, finishing secondary grinding of slurry when the long-time working current of the sand mill 2 is kept within the input rated current range, and then performing the next step;
s4: repairing, setting the fluctuation range of the current of the driving motor 201 to 45 A+/-3A by using a control panel, detecting the current of the driving motor 201 by using the current detector 21, controlling the first three-way control valve 5 and the second three-way control valve 7 by using the controller 14 to ensure the smoothness of a slurry conveying route (the grinding storage tank 1 storing slurry-a grinding storage tank 2-an empty tank state of the grinding storage tank 1), starting the pneumatic diaphragm pump 3 by using the controller 14 to lead the slurry in the grinding storage tank 1 into the grinding machine 2, continuously grinding the injected slurry by using the grinding machine 2, injecting the ground slurry into the empty tank state of the grinding storage tank 1 by using the current detector 6, detecting the liquid level of the grinding storage tank 1 storing the slurry which is crushed secondarily by using the liquid level sensor, converting the storage state in the two storage tanks 1 after the slurry is completely discharged in the grinding storage tank 1, then detecting the current of the silicon carbide powder by using the three-way control valve 5 and the second three-way control valve 7 by adjusting the controller 14, finishing the three-way valve to realize the three-way grinding of the three-channel silicon carbide, and finishing the three-channel grinding by using the three-channel silicon carbide detector, and finishing the three-channel grinding medium flow of the three-channel silicon carbide, and finishing the three-channel grinding medium flow of the three-channel by using the three-channel valve, and finishing the three-channel silicon carbide medium, and finishing the three-channel grinding medium, and finishing the three-channel quality of the grinding medium, and finishing the three-quality of the silicon carbide and finishing, and finishing the quality of the silicon carbide, finishing the modification of the silicon carbide micro powder in the slurry when the long-time working current of the sand mill 2 is kept stable, and then carrying out the next step;
s5, grinding slurry in the storage tank 1 to separate a silicon carbide medium I, a silicon carbide medium II and a silicon carbide medium III, and then dehydrating and drying the silicon carbide slurry to obtain silicon carbide micro powder;
the particle diameters of the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III in the process are gradually reduced, so that the grinding requirement of silicon carbide micro powder with the particle diameters gradually reduced in slurry can be met, simultaneously, the viscosity and the PH value of the slurry are respectively detected before the steps of primary circulation crushing, secondary circulation crushing and repairing, a controller 14 is used for controlling a material pump 13 to respectively guide alkaline liquor and a modifier in the regulating tank 11 and the modifier storage tank 10 into the grinding storage tank 1 for adjusting the viscosity and the PH value of the slurry, the viscosity of the slurry is kept to be 10S, the PH value of the slurry is kept to be 8-9.5, the concentration of the slurry is accurately controlled, and the slurry is ensured to be in an optimal grinding state; and simultaneously, the current of the driving motor 201 is sequentially increased in the processes of primary circulation crushing, secondary circulation crushing and repairing.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The full-automatic silicon carbide micro powder wet method cross circulation grinding system is characterized by comprising a circulation cross grinding module and a control module, wherein the circulation grinding module is connected with a slurry concentration adjusting module, a slurry temperature adjusting module and a current adjusting module, the slurry concentration adjusting module comprises a slurry fluidity adjusting module and a slurry PH adjusting module, and the control module is respectively and electrically connected with the circulation cross grinding module, the slurry temperature adjusting module, the current adjusting module, the slurry fluidity adjusting module and the slurry PH adjusting module;
the circulating cross grinding module comprises a storage module, wherein the storage module is connected with a sand mill, a feed pipe is arranged between a discharge port of the storage module and a feed end of the sand mill, a pneumatic diaphragm pump is arranged on the feed pipe, a discharge pipe is arranged between the discharge end of the sand mill and the feed end of the storage module and is communicated with the feed end of the storage module, a plurality of medium storage tanks are connected in parallel on the feed pipe between the pneumatic diaphragm pump and the sand mill, different mediums with different granularity diameters are stored in the medium storage tanks, an electromagnetic valve is arranged between the medium storage tanks and the feed pipe and is communicated with each other, and the sand mill, the pneumatic diaphragm pump and the electromagnetic valve are all electrically connected with the control module;
the material storage module comprises two grinding material storage tanks connected in parallel on the feeding pipe, a liquid level sensor is arranged in the grinding material storage tanks, a first three-way control valve is arranged between the pneumatic diaphragm pump and the two grinding material storage tanks for communication, a second three-way control valve is arranged between the sand mill and the two grinding material storage tanks for communication, and the first three-way control valve, the second three-way control valve and the liquid level sensor are mutually linked and are electrically connected with the control module;
the control module comprises a controller positioned at one side of the grinding storage tank, and an operation panel is arranged on the controller;
the slurry fluidity adjusting module comprises a modifier storage tank communicated with the grinding storage tank, wherein a CA solution is stored in the modifier storage tank;
the slurry PH adjusting module comprises an adjusting tank communicated with the grinding storage tank and a PH value detector arranged in the grinding storage tank, a material pump is arranged between the adjusting tank and the grinding storage tank for communication, alkali liquor is stored in the adjusting tank, and the PH value detector and the material pump are electrically connected with the controller;
the sand mill comprises a tank body, wherein a feed pipe and a discharge pipe are respectively arranged at two ends of the tank body, a rotating shaft is arranged in the tank body, a plurality of uniformly distributed dispersing discs are arranged on the rotating shaft, one end, close to the discharge pipe, of the rotating shaft penetrates through the tank body to be connected with a driving motor, and the driving motor is electrically connected with a current adjusting module;
the dispersing discs are provided with a plurality of through holes with different shapes, and the through holes with the same shape on the adjacent distributing discs are distributed in a staggered way;
the current regulation module comprises a current detector for detecting the current of the driving motor, and the current detector is linked with the electromagnetic valve and is electrically connected with the controller;
the slurry temperature regulation module comprises a spiral cooling pipe and a temperature detector, wherein the spiral cooling pipe and the temperature detector are installed on the grinding storage tank, the temperature detector is installed in the position close to the discharging pipe, two ends of the spiral cooling pipe are respectively connected with a cold water storage tank and a water storage tank, a water pump is arranged between the cold water storage tank and the spiral cooling pipe to be communicated, and the temperature detector is in linkage with the water pump and is electrically connected with the controller.
2. The full-automatic silicon carbide micro powder wet method cross circulation grinding system according to claim 1, wherein 3 medium storage tanks are arranged, silicon carbide medium I, silicon carbide medium II and silicon carbide medium III are stored in the 3 medium storage tanks at one time, and particle size diameters of the silicon carbide medium I, the silicon carbide medium II and the silicon carbide medium III are sequentially reduced.
3. The method for processing the full-automatic silicon carbide micro powder wet grinding system is characterized by comprising any full-automatic silicon carbide micro powder wet cross circulation grinding system as claimed in claims 1-2, and the processing steps are as follows:
s1: preparing materials, namely, storing silicon carbide media I, silicon carbide media II and silicon carbide media III with different particle diameters in 3 different medium storage tanks, and guiding silicon carbide micro powder slurry with initial concentration of 10S into one grinding storage tank, wherein the other grinding storage tank is in an empty tank state;
s2: the method comprises the steps of carrying out primary circulation crushing, setting the fluctuation range of the current of a driving motor to be 45 A+/-3A by using a control panel, detecting the current of the driving motor by using a current detector, and controlling the first three-way control valve and the second three-way control valve to ensure the smoothness of a slurry conveying route by using a controller, wherein the conveying route is as follows: the method comprises the steps that after the grinding storage tanks in the grinding storage tank-sand mill-empty tank state are stored with slurry, the pneumatic diaphragm pump is started by the controller to guide the slurry in the grinding storage tank into the sand mill, the sand mill continuously grinds the injected slurry, the ground slurry is injected into the grinding storage tank in the empty tank state through the discharging pipe, the liquid level sensor is used for detecting the liquid level of the grinding storage tank in which the unground slurry is stored, after the slurry in the grinding storage tank in which the unground slurry is stored is completely discharged, the storage states in the two grinding storage tanks are converted, then the slurry in the process is repeatedly flowed by adjusting the first three-way control valve and the second three-way control valve, the cyclic grinding of the slurry is realized, in the process, the controller controls the solenoid valve communicated with the silicon carbide medium to be opened when the load of the driving motor is larger and the detection current is larger than the input value according to the detection of the granularity of the current detector, the silicon carbide micropowder in the process is controlled by the controller, the silicon carbide medium is injected into the grinding mill for a certain time, the silicon carbide medium is subjected to the grinding for a certain time, and the diameter of the silicon carbide medium is reduced when the silicon carbide medium is subjected to the grinding process, and the grinding medium is subjected to the grinding and the grinding process is finished for a certain time;
s3: the secondary circulation is broken, utilizes control panel to set for driving motor current's fluctuation range to 45A + -3A, utilizes the electric current detector detects driving motor's electric current, then through the controller control first tee bend control valve and second tee bend control valve guarantee the unobstructed of ground paste delivery route, and the delivery route is: the method comprises the steps that a grinding storage tank in a grinding storage tank-sand mill-empty tank state is stored with slurry, then the pneumatic diaphragm pump is started by the controller to guide the slurry in the grinding storage tank into the sand mill, the sand mill continuously grinds the injected slurry, the ground slurry is injected into the grinding storage tank in the empty tank state through the discharge pipe, the liquid level sensor is utilized to detect the liquid level of the grinding storage tank in which the slurry which is crushed once is stored, after all the slurry in the grinding storage tank in which the slurry is crushed once is stored is discharged, the storage states in the two grinding storage tanks are converted, then the slurry in the process is repeatedly flowed by adjusting the first three-way control valve and the second three-way control valve, so that the circulating grinding of the sand slurry is realized, in the process, the controller controls the solenoid valve which is communicated with the silicon carbide medium to open when the load of the silicon carbide micro powder in the slurry is larger, the driving motor is caused to cause the detection current to be larger than the input value, the silicon carbide medium is injected into the grinding tank for a second time, and the silicon carbide medium is subjected to the secondary grinding operation range when the silicon carbide medium is subjected to secondary grinding, and the secondary grinding medium is reduced, and the secondary grinding of the silicon carbide medium is subjected to the secondary grinding is carried out;
s4: repairing, wherein the fluctuation range of the current of the driving motor is set to be 45 A+/-3A by using a control panel, the current of the driving motor is detected by using the current detector, and then the controller is used for controlling the first three-way control valve and the second three-way control valve to ensure the smoothness of a slurry conveying route, and the conveying route is as follows: the grinding storage tank is in a grinding storage tank-sand mill-empty tank state, then the pneumatic diaphragm pump is started by the controller to guide the slurry in the grinding storage tank into the sand mill, the sand mill continuously grinds the injected slurry, the ground slurry is injected into the grinding storage tank in the empty tank state through the discharging pipe, the liquid level sensor is utilized to detect the liquid level of the grinding storage tank in which the slurry subjected to secondary crushing is stored, after the slurry in the grinding storage tank in which the slurry subjected to primary crushing is stored is completely discharged, the storage states in the two grinding storage tanks are converted, and then, repeating the slurry flowing in the process by adjusting the first three-way control valve and the second three-way control valve to realize the cyclic grinding of the slurry, wherein in the process, the controller controls the electromagnetic valve communicated with the third silicon carbide medium to be opened according to the unstable current detected by the current detector caused by the different appearance of the silicon carbide micro powder in the slurry, so as to grind the slurry by injecting the third silicon carbide medium into a sand mill, finishing the three grinding of the slurry by utilizing the third silicon carbide medium, finishing the appearance modification of the silicon carbide micro powder in the slurry, finishing the modification of the silicon carbide micro powder in the slurry when the long-time working current of the sand mill is kept stable, and then carrying out the next step;
and S5, grinding slurry in the storage tank to separate a silicon carbide medium I, a silicon carbide medium II and a silicon carbide medium III, and then dehydrating and drying the silicon carbide slurry to obtain silicon carbide micro powder.
4. The method for processing the full-automatic silicon carbide micro powder wet grinding system according to claim 3, wherein the viscosity and the PH value of slurry are detected before the steps of primary circulation crushing, secondary circulation crushing and repairing, a controller is used for controlling a material pump to respectively guide alkali liquor and a modifier in the regulating tank and the modifier storage tank into the grinding storage tank for regulating the viscosity and the PH value of the slurry, the viscosity of the slurry is kept to be 10S, the PH value of the slurry is kept to be 8-9.5, the concentration of the slurry is accurately controlled, and the slurry is ensured to be in an optimal grinding state.
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