Rare earth raw material preparation device for magnesite carbon brick

Abstract

The application belongs to the technical field of refractory material preparation equipment, and particularly relates to a rare earth raw material preparation device for preparing magnesia carbon bricks, which comprises a rack, a box body provided with a box cover and a stirring frame, the box body is fixedly connected to the rack, the stirring frame is located in the box body and penetrates through the box body to be installed on a bearing seat one at the top of the rack at two ends, the stirring frame is connected to a motor installed on the rack through a transmission system, a group of upwardly-inclined nozzles are inserted into the two sides of the box body, a one-way valve one is installed in the nozzles, the nozzles are connected to a gas supply system, and the gas supply system is drivingly connected to the transmission system. In the application, the stirring frame and the upwardly-inclined nozzles are matched, the stirring force and the airflow thrust form a synergistic effect, the raw material aggregation can be broken, the raw material deposition can be avoided, and the rare earth raw material and other components can be more uniformly mixed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refractory material preparation equipment, and particularly relates to a rare earth raw material preparation device for magnesia carbon brick. BACKGROUND

[0002] In the preparation process of magnesia carbon brick, uniform configuration of the rare earth raw material is a key link affecting the performance of the product. In the prior art, the rare earth raw material configuration is mostly configured by using a single stirring method, and the raw material is mixed by using a stirring device.

[0003] However, the existing device has the following problems: the raw material is prone to deposit at the bottom of the box due to gravity, resulting in insufficient mixing; the raw material is prone to agglomeration during stirring, and it is difficult to form a uniform mixing system; therefore, a rare earth raw material configuration device capable of improving the uniformity of raw material mixing, reducing deposition and achieving dynamic adjustment is needed. SUMMARY

[0004] Based on the technical problems existing in the prior art, the present application provides a rare earth raw material preparation device for magnesia carbon brick.

[0005] The rare earth raw material preparation device for magnesia carbon brick comprises a rack, a box body provided with a box cover and a stirring frame. The box body is fixedly connected to the rack, the stirring frame is located inside the box body and penetrates through the box body to be installed on the bearing seat one at the top of the rack at both ends, the stirring frame is connected to the motor installed on the rack through a transmission system, a group of upwardly inclined nozzles are inserted into the both sides of the box body, a one-way valve one is installed in the nozzle, the nozzle is connected with a gas supply system, and the gas supply system is drivingly connected with the transmission system; the motor drives the stirring frame to rotate in the box body through the transmission system to stir and mix the rare earth raw material in the box body, and the transmission system drives the gas supply system to work at the same time, so that the gas is sprayed into the box body through the nozzle to assist the mixing of the raw material, and the one-way valve one can prevent the raw material from flowing back into the nozzle.

[0006] Preferably, the transmission system comprises a tooth bar, a driven wheel, a driving wheel, a belt and a gear. The tooth bar is installed on the rack through a bearing seat two, the gear is fixedly sleeved on the shaft end of the stirring frame and is in meshing connection with the tooth bar, the driven wheel is installed on the shaft end of the tooth bar, and the driving wheel is installed on the output shaft of the motor. The driven wheel and the driving wheel are connected through the belt; the motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, the driven wheel drives the tooth bar to rotate on the bearing seat two, the tooth bar is in meshing connection with the gear, thereby driving the stirring frame to rotate, and the stirring operation of the raw material is realized.

[0007] Preferably, the air supply system comprises a mounting disc, an air bag, a connecting pipe, a one-way valve two, a gas distribution pipe, a corrugated ring two and a ring-shaped push plate, the mounting disc is fixedly connected to the end of the rack, the air bag is installed in the groove on the mounting disc, the corrugated ring two is elastically connected with the mounting disc, the ring-shaped push plate is integrally formed with the corrugated ring two and fixed with the air bag, the corrugated ring one is fixedly connected to the gear and engaged with the corrugated ring two, the gas distribution pipe is connected with a plurality of spray heads, the air bag is connected with the corresponding gas distribution pipe through the connecting pipe, and the one-way valve two is installed at the end of the gas distribution pipe; the gear rotates to drive the corrugated ring one to rotate synchronously, the corrugated ring one and the corrugated ring two are engaged to make the corrugated ring two reciprocate, thereby driving the ring-shaped push plate to repeatedly press and release the air bag, the gas generated by the air bag enters the gas distribution pipe through the connecting pipe, and then is sprayed into the box through the spray head, and the one-way valve two controls the one-way flow of the gas to avoid backflow.

[0008] Preferably, a plurality of annularly arrayed guide columns are inserted into the circumferential outer wall of the corrugated ring two, the other end of the guide column is fixedly connected with the mounting disc, a spring is sleeved on the guide column, and the two ends of the spring are fixedly connected with the guide column and the corrugated ring two respectively; when the corrugated ring two moves under the driving of the corrugated ring one, the guide column guides the movement of the corrugated ring two to prevent deviation, the spring deforms with the movement of the corrugated ring two to generate elastic force to assist the resetting of the corrugated ring two, thereby ensuring the stability of the reciprocating movement of the corrugated ring two, and making the air supply of the air bag more uniform.

[0009] Preferably, the rare earth raw material preparation equipment for preparing magnesia carbon bricks further comprises:

[0010] The density acquisition module is installed on the inner wall of the box near the stirring area and is used to detect the mixing state of the raw materials in real time and generate a density fluctuation coefficient through the control module; the current acquisition module is installed on the power supply circuit of the motor and is used to detect the load fluctuation of the motor in real time and generate a current fluctuation coefficient through the control module; the control module comprehensively analyzes the generated density fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient, compares the evaluation coefficient with a pre-set reference threshold value, and controls the working state of the air supply system according to the comparison result; the density acquisition module detects the change of the mixing density of the raw materials in the box in real time and generates a density fluctuation coefficient, the current acquisition module detects the load current fluctuation of the motor in real time and generates a current fluctuation coefficient, and the control module comprehensively analyzes the two coefficients to obtain an evaluation coefficient; when the evaluation coefficient deviates from the reference threshold value, the control module adjusts the air supply intensity or frequency of the air supply system to optimize the mixing effect of the raw materials.

[0011] Preferably, the output end and the input end of the density acquisition module and the output end and the input end of the current acquisition module are electrically connected with the input end and the output end of the control module respectively, and the output end of the control module is electrically connected with the input end of the motor.

[0012] Preferably, the execution steps of the control module for controlling the working state of the air supply system according to the comparison result are as follows:

[0013] The density acquisition module acquires the raw material mixing state; the current acquisition module acquires the load fluctuation; the control module calculates the density fluctuation coefficient, the current fluctuation coefficient and the evaluation coefficient Rpg; if Rpg < R threshold: maintaining the current airflow intensity; if Rpg >= R threshold: increasing the airflow intensity to enhance the mixing effect.

[0014] Preferably, the generation logic of the density fluctuation coefficient is:

[0015] The actual density at each time within T time in the stirring process is obtained by the density acquisition module; based on the fluctuation degree of the actual density and the average density, the density fluctuation coefficient reflecting the attenuation degree of the raw material mixing uniformity is calculated.

[0016] Preferably, the generation logic of the current fluctuation coefficient is:

[0017] The actual working current at each time within T time in the stirring process is obtained by the current acquisition module; based on the fluctuation degree of the actual current and the average current, the current fluctuation coefficient reflecting the mechanical load fluctuation degree is calculated.

[0018] Preferably, the generation logic of the evaluation coefficient is:

[0019] The control module generates the evaluation coefficient by dynamically balancing the density fluctuation coefficient and the current fluctuation coefficient, and combining the preset weight coefficient.

[0020] Compared with the prior art, the rare earth raw material configuration equipment for preparing magnesia carbon brick has the following beneficial effects:

[0021] 1. The mixing uniformity is significantly improved: through the cooperation of the stirring frame and the upwardly inclined nozzle, the stirring force and the airflow thrust form a synergistic effect, which can break the agglomeration of the raw materials and avoid the deposition of the raw materials, so that the rare earth raw materials and other ingredients are mixed more uniformly.

[0022] 2. Strong dynamic adjustment capability: with the help of the density acquisition module, the current acquisition module and the control module, the raw material mixing state and the motor load fluctuation can be monitored in real time, the working state of the gas supply system is dynamically adjusted through the evaluation coefficient, and the mixing effect is always at the optimal level.

[0023] 3. High-efficiency structure linkage: the transmission system simultaneously drives the stirring frame and the gas supply system, without the need for an additional power source, which simplifies the equipment structure, improves the energy utilization rate and reduces the operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a first angle structure schematic view of the rare earth raw material configuration equipment for preparing magnesia carbon brick proposed by the application;

[0025] Figure 2 A second angle structure schematic view of a rare earth raw material configuration device for preparing magnesia carbon bricks is provided in the present application;

[0026] Figure 3 A mounting structure schematic view between a stirring frame and a rack of a rare earth raw material configuration device for preparing magnesia carbon bricks is provided in the present application;

[0027] Figure 4 A second angle structure schematic view of a rare earth raw material configuration device for preparing magnesia carbon bricks is provided in the present application; Figure 3

[0028] Figure 5 A gas bag mounting structure schematic view of a rare earth raw material configuration device for preparing magnesia carbon bricks is provided in the present application;

[0029] Figure 6 A system block diagram of a rare earth raw material configuration device for preparing magnesia carbon bricks is provided in the present application.

[0030] In the figure: 1, rack; 2, box; 3, stirring frame; 4, bearing seat one; 5, spray head; 6, one-way valve one; 7, motor; 8, bearing seat two; 9, tooth bar; 10, driven wheel; 11, driving wheel; 12, belt; 13, gear; 14, mounting disc; 15, groove; 16, gas bag; 17, gas distribution pipe; 18, connecting pipe; 19, one-way valve two; 20, corrugated ring one; 21, corrugated ring two; 22, annular push plate; 23, guide column; 24, spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0033] Reference Figures 1-6 ​The rare earth raw material preparation equipment for magnesite carbon brick preparation comprises a rack 1, a box body 2 provided with a box cover and a stirring frame 3, the box body 2 is fixedly connected to the rack 1, the stirring frame 3 is located in the box body 2 and is installed on the bearing seat one 4 at the top of the rack 1 through the box body 2 at both ends, the stirring frame 3 is connected with the motor 7 installed on the rack 1 through a transmission system, a group of upwardly inclined nozzles 5 are inserted on the two sides of the box body 2 respectively, a one-way valve one 6 is installed in the nozzle 5, the nozzle 5 is connected with a gas supply system, and the gas supply system is drivingly connected with the transmission system;

[0034] In use, the motor 7 drives the stirring frame 3 to rotate in the box body 2 through the transmission system to stir and mix the rare earth raw materials in the box body, meanwhile, the transmission system drives the gas supply system to work, so that the gas is sprayed into the box body 2 through the nozzles 5 to assist the raw material mixing, and the one-way valve one 6 can prevent the raw materials from flowing back into the nozzles 5;

[0035] It should be noted that the upwardly inclined gas flow has an upward thrust, which can assist in turning over the raw materials at the bottom of the box body 2, and cooperates with the stirring action of the stirring frame 3 to effectively prevent the raw materials from being deposited at the bottom of the box body 2 due to gravity, so as to ensure that all the raw materials can participate in the mixing process, and the gas flow sprayed by the nozzles 5 on both sides is easy to form a local circulation convection in the box body 2 to drive the raw materials to move in the horizontal and vertical directions, further breaking the agglomeration state of the raw materials and improving the mixing uniformity of the rare earth raw materials and other components.

[0036] In the application, the transmission system comprises a tooth bar 9, a driven wheel 10, a driving wheel 11, a belt 12 and a gear 13, the tooth bar 9 is installed on the rack 1 through the bearing seat two 8, the gear 13 is fixedly sleeved on the shaft end of the stirring frame 3 and is in meshing connection with the tooth bar 9, the driven wheel 10 is installed on the shaft end of the tooth bar 9, and the driving wheel 11 is installed on the output shaft of the motor 7, and the driven wheel 10 and the driving wheel 11 are connected through the belt 12;

[0037] In use, the motor 7 is started to drive the driving wheel 11 to rotate, the driving wheel 11 drives the driven wheel 10 to rotate through the belt 12, the driven wheel 10 drives the tooth bar 9 to rotate on the bearing seat two 8, the tooth bar 9 meshes with the gear 13 to drive the stirring frame 3 to rotate, so that the stirring operation on the raw materials is realized.

[0038] In the application, the air supply system comprises a mounting disc 14, an air bag 16, a connecting pipe 18, a one-way valve 19, a branch pipe 17, a corrugated ring 21 and a ring-shaped push plate 22, the mounting disc 14 is fixedly connected to the end of the rack 1, the air bag 16 is installed in a groove 15 on the mounting disc 14, the corrugated ring 21 is elastically connected to the mounting disc 14, the ring-shaped push plate 22 is integrally formed with the corrugated ring 21 and is fixed to the air bag 16, the corrugated ring 20 is fixedly connected to the gear 13 and is engaged with the corrugated ring 21, the branch pipe 17 is connected to a plurality of nozzles 5, the air bag 16 is connected to the corresponding branch pipe 17 through the connecting pipe 18, and the one-way valve 19 is installed at the end of the branch pipe 17.

[0039] In use, the gear 13 rotates to drive the corrugated ring 20 to rotate synchronously, the corrugated ring 20 is engaged with the corrugated ring 21 to drive the corrugated ring 21 to reciprocate, and the ring-shaped push plate 22 repeatedly presses and releases the air bag 16, the gas generated by the air bag 16 enters the branch pipe 17 through the connecting pipe 18, and then is sprayed into the box 2 through the nozzles 5, and the one-way valve 19 controls the one-way flow of the gas to avoid backflow.

[0040] In the application, a plurality of guide columns 23 are arranged in an annular array on the circumferential outer wall of the corrugated ring 21, the other ends of the guide columns 23 are fixedly connected to the mounting disc 14, springs 24 are sleeved on the guide columns 23, and the two ends of each spring 24 are fixedly connected to the guide column 23 and the corrugated ring 21.

[0041] In use, the guide columns 23 guide the movement of the corrugated ring 21 to prevent deviation, and the springs 24 are deformed along with the movement of the corrugated ring 21 to generate elastic force to assist the corrugated ring 21 to reset, so that the stability of the reciprocating movement of the corrugated ring 21 is ensured, and the air supply of the air bag 16 is more uniform.

[0042] In another embodiment of the application, a rare earth raw material preparation device for preparing magnesia carbon bricks further comprises:

[0043] A density acquisition module is installed on the inner wall of the box 2 and close to the stirring area, is used for detecting the mixing state of the raw materials in real time, and generates a density fluctuation coefficient through the control module;

[0044] A current acquisition module is installed on the power supply circuit of the motor 7, is used for detecting the load fluctuation of the motor 7 in real time, and generates a current fluctuation coefficient through the control module;

[0045] The control module comprehensively analyzes the generated density fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient, compares the evaluation coefficient with a preset reference threshold value, and controls the working state of the air supply system according to the comparison result;

[0046] It should be noted that the density acquisition module can be a capacitive sensor or other device capable of monitoring the mixing state of raw materials in real time, the current acquisition module can be a Hall current sensor or other device capable of monitoring the load fluctuation of the motor 7 in real time, and the control module is an embedded controller (such as STM32 series) integrated with a data fusion algorithm for processing sensor data, calculating coefficients and outputting control signals, so the density acquisition module, the current acquisition module and the control module are not specifically limited here and can be selected according to actual needs.

[0047] In use, the density acquisition module detects the mixing density change of the raw materials in the box 2 in real time and generates a density fluctuation coefficient, the current acquisition module detects the load current fluctuation of the motor 7 in real time and generates a current fluctuation coefficient, and the control module comprehensively analyzes the two coefficients to obtain an evaluation coefficient. When the evaluation coefficient deviates from the reference threshold, the control module adjusts the gas supply intensity or frequency of the gas supply system to optimize the raw material mixing effect.

[0048] In the present application, the output end and the input end of the density acquisition module, the output end and the input end of the current acquisition module are respectively electrically connected with the input end and the output end of the control module, and the output end of the control module is electrically connected with the input end of the motor 7.

[0049] Further in the present application, the generated density fluctuation coefficient and current fluctuation coefficient are comprehensively analyzed by the control module to generate an evaluation coefficient, which is compared with a pre-set reference threshold, and the working state of the gas supply system is controlled according to the comparison result. The execution steps are as follows:

[0050] Real-time detection: the density acquisition module acquires the mixing state of raw materials; the current acquisition module acquires the load fluctuation;

[0051] Coefficient calculation:

[0052] Density fluctuation coefficient Dσ: representing the attenuation degree of the uniformity of raw material mixing, reflecting the stability of density change in the stirring process, in the present application, the generation logic of the density fluctuation coefficient is as follows:

[0053] S1, acquiring the actual density at different times within T time in the stirring process through the density acquisition module, and the actual density acquired at the mth moment within T time is denoted as , m=1, 2, 3, …, t, m is a positive integer;

[0054] S2, calculating the density fluctuation coefficient, and the expression for calculation is:

[0055]

[0056] In the formula, is the average density within T time; t is the sampling number within T time.

[0057] Current fluctuation coefficient Iσ: quantifies the mechanical load fluctuation caused by material adhesion or resistance, revealing abnormal conditions of motor operation; in the present application, the generation logic of current fluctuation coefficient is:

[0058] S1, acquire the actual working current at different times within T time during the stirring process through the current acquisition module, and mark the actual current acquired at the nth moment within T time as , n=1, 2, 3, …, k, n is a positive integer;

[0059] S2, calculate the current fluctuation coefficient, and the expression for calculation is:

[0060]

[0061] In the formula, is the average current within T time; k is the sampling number within T time.

[0062] Evaluation coefficient Rpg: risk rating of mixing difficulty and mechanical resistance, formula analysis through the control module, according to the formula:

[0063]

[0064] In the formula, r1 and r2 are weight coefficients (determined dynamically according to experimental data and process requirements, the best r1 and r2 are determined through an iterative process of initial theoretical assignment → field operation test → observation effect → parameter adjustment, which is the standard practice of industrial automation system debugging, so it is not described here), r1, r2>1.

[0065] Dynamic adjustment: if Rpg<R threshold: maintain the current air flow intensity; if Rpg≥R threshold: increase the air flow intensity (such as increase the extrusion frequency of air bag 16) to enhance the mixing effect.

[0066] Working principle:

[0067] After the motor 7 is started, the transmission system drives the stirring frame 3 to rotate in the box 2, and the rare earth raw materials in the box are stirred; at the same time, the transmission system drives the gas supply system to work, so that the gas is sprayed into the box 2 through the nozzle 5, and the inclined upward airflow assists the turning of the raw materials, and cooperates with the stirring frame 3 to form efficient mixing;

[0068] In the specific process, the motor 7 drives the driving wheel 11 to rotate, and the rotation is transmitted to the tooth bar 9 through the belt 12 and the driven wheel 10. The tooth bar 9 is engaged with the gear 13 to drive the stirring frame 3 to rotate. When the gear 13 rotates, the corrugated ring one 20 rotates synchronously. The corrugated ring one 20 is engaged with the corrugated ring two 21 to make the corrugated ring two 21 reciprocate. Then, the air bag 16 is repeatedly squeezed and relaxed through the annular push plate 22. The gas generated by the air bag 16 is sprayed from the nozzle 5 through the connecting pipe 18 and the gas distribution pipe 17. The guide column 23 guides the corrugated ring two 21, and the spring 24 assists the reset of the corrugated ring two 21 to ensure uniform gas supply.

[0069] In addition, the density acquisition module detects the raw material mixing density in real time and generates a density fluctuation coefficient Dσ. The current acquisition module detects the motor 7 load current and generates a current fluctuation coefficient Iσ. The control module comprehensively calculates the evaluation coefficient Rpg based on the two coefficients. When Rpg≥the preset threshold, the gas supply system adjusts the gas supply strength or frequency to optimize the mixing effect.

[0070] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A rare earth material preparation device for the production of magnesia carbon bricks, comprising a frame (1), a box (2) with a box cover and a stirring frame (3), characterized in that The box (2) is fixedly connected on the rack (1), the stirring frame (3) is located inside the box (2), and the two ends are respectively installed on the bearing seat one (4) on the top of the rack (1) through the box (2), the stirring frame (3) is connected with the motor (7) installed on the rack (1) through the transmission system, a group of upwardly inclined nozzles (5) are respectively inserted on the two sides of the box (2), the one-way valve one (6) is installed in the nozzle (5), the nozzle (5) is connected with the gas supply system, and the gas supply system is drivingly connected between the transmission system, the gas supply system comprises a mounting disc (14), a gas bag (16), a connecting pipe (18), a one-way valve two (19), a gas distribution pipe (17), a corrugated ring two (21) and a ring-shaped push plate (22), the mounting disc (14) is fixedly connected on the end of the rack (1), the gas bag (16) is installed in the groove (15) on the mounting disc (14), the corrugated ring two (21) is elastically connected with the mounting disc (14), the ring-shaped push plate (22) is integrally formed with the corrugated ring two (21) and is fixed with the gas bag (16), the corrugated ring one (20) is fixedly connected on the gear (13) of the transmission system installed on the shaft end of the stirring frame (3) and is engaged with the corrugated ring two (21), the gas distribution pipe (17) is connected with a plurality of nozzles (5), the gas bag (16) is connected with the corresponding gas distribution pipe (17) through the connecting pipe (18), and the one-way valve two (19) is installed on the end of the gas distribution pipe (17).

2. The rare earth material preparation device for manufacturing magnesia carbon brick according to claim 1, characterized in that, The transmission system comprises a toothed rod (9), a driven wheel (10), a driving wheel (11), a belt (12) and a gear (13), the toothed rod (9) is installed on the rack (1) through the bearing seat two (8), the gear (13) is fixedly sleeved on the shaft end of the stirring frame (3) and is meshingly connected with the toothed rod (9), the driven wheel (10) is installed on the shaft end of the toothed rod (9), and the driving wheel (11) is installed on the output shaft of the motor (7); the driven wheel (10) and the driving wheel (11) are connected through the belt (12).

3. The rare earth material preparation device for manufacturing magnesia carbon brick according to claim 1, characterized in that, A plurality of ring-shaped array distributed guide columns (23) are inserted on the circumferential outer wall of the corrugated ring two (21), the other end of the guide column (23) is fixedly connected with the mounting disc (14), a spring (24) is sleeved on the guide column (23), and the two ends of the spring (24) are fixedly connected with the guide column (23) and the corrugated ring two (21) respectively.

4. The rare earth material preparation device for manufacturing magnesia carbon brick according to claim 1, characterized in that, Further comprising: The density acquisition module is used for detecting the raw material mixing state in real time, and generating a density fluctuation coefficient through the control module, and the generation logic is that the actual density at each time in T time in the stirring process is obtained through the density acquisition module; Based on the fluctuation degree of the actual density and the average density, the density fluctuation coefficient reflecting the attenuation degree of the raw material mixing uniformity is calculated; The current acquisition module is used for detecting the load fluctuation of the motor (7) in real time, and generating a current fluctuation coefficient through the control module, and the generation logic is that the actual working current at each time in T time in the stirring process is obtained through the current acquisition module; Based on the fluctuation degree of the actual current and the average current, the current fluctuation coefficient reflecting the mechanical load fluctuation degree is calculated; The control module comprehensively analyzes the generated density fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient, and the generation logic is as follows: the control module couples the density fluctuation coefficient and the current fluctuation coefficient, dynamically weighs and calculates in combination with a preset weight coefficient, and generates an evaluation coefficient that evaluates the comprehensive mixed difficulty and mechanical resistance risk; the evaluation coefficient is compared with a preset reference threshold value, and the working state of the gas supply system is controlled according to the comparison result.

5. The rare earth material preparation device for producing magnesia carbon brick according to claim 4, characterized in that, The output end and the input end of the density acquisition module and the output end and the input end of the current acquisition module are electrically connected with the input end and the output end of the control module respectively, and the output end of the control module is electrically connected with the input end of the motor (7).

6. The rare earth material preparation device for producing magnesia carbon brick according to claim 4, characterized in that, The execution steps of the control module for controlling the working state of the gas supply system according to the comparison result are as follows: The density acquisition module acquires the raw material mixing state; the current acquisition module acquires the load fluctuation; the control module calculates the density fluctuation coefficient, the current fluctuation coefficient and the evaluation coefficient Rpg; if Rpg < R threshold: maintain the current airflow intensity; if Rpg ≥ R threshold: increase the airflow intensity to enhance the mixing effect.

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