Vertical shaft crusher discharge particle size automatic adjusting system

Abstract

The utility model provides a kind of vertical shaft crusher discharge particle size automatic regulating system, comprising: feed unit, vertical shaft crusher, discharge unit and conveying unit, feed unit includes belt conveyor or vibrating feeder, belt conveyor or vibrating feeder drives vertical shaft crusher to be single-shaft or double-shaft vertical shaft crusher by frequency converter, the spindle motor of vertical shaft crusher is driven by frequency converter, sandstone raw material is sent into the cavity of vertical shaft crusher upper main feed inlet by the belt conveyor or vibrating feeder, and the mixed material after crushing flows out through the discharge port of lower discharge unit, and then is discharged by the discharge conveying belt of conveying unit;Conveyed to the latter screening;Sampling unit, screening unit, weighing unit and calculation and control unit are sequentially arranged on the discharge port of discharge unit.The system is simple in structure, easy to operate, and can automatically adjust the spindle speed of vertical shaft crusher in real time online, achieving uniform particle size grading, good consistency, energy saving and consumption reduction effect.

Description

Technical Field

[0001] This utility model relates to an automatic adjustment system for the discharge particle size of a vertical shaft impact crusher, specifically a closed-loop negative feedback automatic control system for the discharge particle size of a vertical shaft impact crusher, belonging to the field of intelligent operation technology of mining machinery and equipment. Background Technology

[0002] Vertical shaft impact crusher (abbreviated as: vertical shaft crusher or sand making machine) is a high-power and high-efficiency stone crushing equipment. It is widely used for medium and fine crushing (sand making) of various hard and brittle materials such as rocks, abrasives, refractory materials, cement clinker, quartz, iron ore, and concrete aggregates. Its main features are high output and good crushing effect. It can process materials with a particle size of about 50mm into aggregates with a particle size of 5mm and below accounting for 95%. The finished material is cubic in shape, with full and uniform particles, which is welcomed by the market. It is especially suitable for preparing sand and gravel aggregates required for engineering construction and road paving.

[0003] Vertical shaft impact crushers are indispensable key equipment in sand making production lines. Materials undergo at least two or more impacts, friction, and grinding within the vortex crushing chamber. Throughout the crushing process, materials crush each other through self-impact (stone-on-stone), without direct contact with metal components, thus extending the mechanical wear time. The ingenious airflow self-circulation within the vortex chamber eliminates dust pollution. A single vertical shaft impact crusher can achieve an hourly crushing capacity of 500 tons or even higher, with a typical installed power of 100-800KW, making it a typical high-energy-consuming device. During operation, existing vertical shaft impact crushers may experience uneven particle size distribution, needle-like and flaky textures, and other inconsistencies due to wear of crushed blocks, changes in raw material type, or uneven upstream feed. The conventional solution for this problem is to manually sample and analyze the material periodically on-site, monitoring the particle size distribution and needle-like and flaky texture of the produced aggregate in real time, setting early warning values, triggering alarms when values ​​exceed limits, and manually intervening in the feeding speed. During continuous production, problems may arise, such as the gradual wear of the crushed blocks leading to a coarser output particle size. In such cases, it is necessary to stop the machine and replace the crushed blocks. Other causes require comprehensive judgment and analysis before a solution can be developed. On the other hand, the main shaft motor of existing vertical shaft crushers is generally an online variable frequency speed-regulating low-voltage motor. Its speed adjustment scheme typically involves manual estimation based on the output detection results. The drawbacks of this approach are: slow response speed, making it difficult to achieve continuous and stable production; insufficient adjustment results in a high proportion of coarse material, leading to a large amount of recycled material after screening and further crushing, increasing energy consumption and reducing capacity; excessive adjustment results in a high proportion of powder in the output, leading to more waste material after screening, also causing energy and material waste. Therefore, it is necessary to establish an adaptive automatic crushing quality control scheme to ensure that the vertical shaft crusher operates in its optimal state.

[0004] The Chinese invention patent "An Impact Vertical Shaft Crusher and Its Working Method" (2019112867890) discloses a method to address the problem of gradually increasing particle size in the output material due to the increasing distance between crushed blocks caused by their wear during operation. The invention proposes a method to adjust the distance between the first and second crushed blocks, thereby moving the second crushed block and reducing the distance between it and the first crushed block, thus achieving a more uniform particle size. However, this adjustment method requires manual adjustment after the machine is stopped, and the adjustable range is limited. Furthermore, realizing this adjustable spacing significantly increases the equipment manufacturing cost. In practical applications, when the wear of the crushed blocks reaches a certain level, simply relying on the spacing adjustment method cannot solve the problem of uniform particle size; the machine must be stopped and the crushed blocks replaced. Summary of the Invention

[0005] The purpose of this invention is to address the problems described in the background art by designing an automatic particle size adjustment system for vertical shaft crushers that is simple in structure, easy to operate, and can automatically adjust the main shaft speed or feeding speed of the vertical shaft crusher in real time online, so as to achieve uniform particle size distribution, good consistency, energy saving and consumption reduction.

[0006] The technical solution of this utility model is: an automatic particle size adjustment system for a vertical shaft impact crusher, comprising: a feeding unit, a vertical shaft impact crusher, a discharge unit, and a conveying unit. The feeding unit includes a belt conveyor or a vibrating feeder. The belt conveyor or vibrating feeder drives the vertical shaft crusher (vertical shaft crusher) via a frequency converter. The main shaft motor of the vertical shaft crusher is driven by the frequency converter. The sand and gravel raw materials are fed into the upper main feed inlet of the vertical shaft crusher through the belt conveyor or vibrating feeder. The crushed mixture flows out through the discharge outlet of the lower discharge unit and is then conveyed to the subsequent screening stage via the discharge conveyor belt of the conveying unit. The discharge unit is equipped with a sampling unit, a sieving unit, a weighing unit, and a calculation and control unit in sequence at its discharge port; The sampling unit includes: a sampling pipe, an upper sampling valve, a lower sampling valve, and a vibrating motor; the upper part of the sampling pipe is inserted into the discharge port of the vertical shaft crusher, and the lower part of the sampling pipe is connected to the screening unit. The upper sampling valve and the lower sampling valve are respectively located at the upper and lower ends of the sampling pipe. The cavity volume between the upper and lower sampling valves in the sampling pipe is a fixed value. During sampling, the lower sampling valve is closed first, and then the upper sampling valve is opened. After the sampling pipe is filled with the mixture, the upper sampling valve is closed and the lower sampling valve is opened to release all the mixture to the screening unit. Then, the lower sampling valve is closed and the upper sampling valve is opened in sequence, and the cycle is repeated. Both the upper and lower sampling valves are electrically controlled automatic opening and closing valves. The vibrating motor is a device that is fixedly connected to the outside of the sampling tube and uses vibration to clear the material inside the container, thus emptying any remaining material inside the sampling tube. The screening unit includes a vibrating screen; the vibrating screen is a linear vibrating screen, including a feed inlet, a discharge pipe, and a screen mesh. The screen mesh has three layers: upper, middle, and lower, with the mesh size of the upper, middle, and lower layers decreasing from coarse to fine from top to bottom. The vibrating screen includes a feed inlet and a discharge pipe adapted to different mesh sizes. The feed inlet is used to receive the mixed material flowing out of the sampling pipe, and the discharge pipe is used to guide the screened material flowing out of each layer of screen to the weighing and calculation unit.

[0007] Furthermore, the weighing unit includes: an electronic scale, which is an electronic hopper scale, each electronic scale corresponding to a vibrating screen discharge pipe, each electronic scale being equipped with a hopper, a weighing force sensor, and a drain valve; the electronic scale can weigh gross weight, tare weight, and net weight respectively, and can automatically zero; the weighing force sensor is used to sense and measure the net weight of materials of different particle sizes flowing into each hopper respectively, and transmits the measurement results to the calculation and control unit; the drain valve is used to store or discharge materials in the hopper.

[0008] 3. Further, the calculation and control unit includes: a weighing and calculation module, a display module, and an industrial control computer; the weighing and calculation module is used to collect real-time data of the material weight in each electronic scale hopper and transmit it to the industrial control computer, the industrial control computer calculates the total weight of various particle sizes in this batch of mixture and the proportion of various particle sizes, then compares the proportion with the set value to calculate the real-time value of the vertical shaft crusher main shaft motor speed adjustment, and adjusts the speed of the vertical shaft crusher main shaft motor in real time through the frequency converter; the display module is used for digital display of the electronic scale. Real-time weight data.

[0009] Furthermore, there are four discharge pipes and electronic scales.

[0010] Furthermore, the force sensor is a load cell with a buffer device or a bridge-type load cell.

[0011] Furthermore, the upper sampling valve and the lower sampling valve are electrically controlled automatic valves.

[0012] Furthermore, the vent valve is an electrically controlled automatic valve.

[0013] The advantages and beneficial effects of this utility model are: (1) This utility model provides an automatic discharge particle size adjustment system for a vertical shaft impact crusher. By precisely controlling the spindle speed and feeding speed of the vertical shaft impact crusher in real time, it achieves accurate control of the discharge particle size ratio, has a high degree of automation, and greatly improves the working efficiency of the crusher. It is an adaptive crushing quality control system that ensures that the vertical shaft impact crusher operates in the best operating condition; (2) The equipment of this utility model has a simple structure and is easy to automate. The running time and rotation speed of the controlled object in each step are continuously adjustable. The operation is simple and conducive to energy saving and consumption reduction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structural framework of an embodiment of the present utility model, "An Automatic Adjustment System for Discharge Particle Size of a Vertical Shaft Crusher"; Figure 2 This is a schematic diagram showing the positions of some components of an embodiment of the present invention, "An Automatic Adjustment System for Discharge Particle Size of a Vertical Shaft Crusher".

[0015] Explanation of markings in the attached diagram: Figure 1 and Figure 2 In the middle: 1—feed inlet, 2—discharge outlet, 3—discharge conveyor belt, 4.1—upper sampling valve, 4.2—lower sampling valve, 5—sampling material pipe discharge cylinder, 6—vibrating motor, 7—vibrating screen, 7.1—vent valve, 8—discharge pipe, 9—vertical shaft crusher. Detailed Implementation

[0016] The embodiments of this utility model are further described below with reference to the accompanying drawings, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, but should not be construed as limiting this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model. Techniques not described in detail in this technical solution are all known technologies.

[0017] See Figure 1 and appendix Figure 2 This utility model discloses an automatic particle size adjustment system for a vertical shaft impact crusher, comprising: a feeding unit, a vertical shaft impact crusher 9, a sampling unit, a screening unit, a weighing unit, and a calculation and control unit.

[0018] The feeding unit includes a belt conveyor or a vibrating feeder, which is driven by a frequency converter to achieve online adjustment of the conveying amount.

[0019] The vertical shaft crusher 9 is a commercially known vertical shaft crusher. The main shaft motor of the vertical shaft crusher is driven by a frequency converter. The sand and gravel raw materials are fed into the upper feed port 1 of the vertical shaft crusher through a vibrating feeder or belt conveyor. The crushed mixture is continuously transported to the conveyor belt 3 through the lower discharge port 2. The mixture includes sand and gravel and stone powder of different particle sizes. In this embodiment of the present invention, the particle size of the material at the feed port is generally 50 mm, and the particle size at the discharge port is about 0.25~10 mm.

[0020] The sampling unit includes: a sampling pipe 5, an upper sampling valve 4.1, a lower sampling valve 4.2, and a vibrating motor 6. The upper part of the sampling pipe 5 is inserted into the discharge port 2 of the vertical shaft impact crusher to draw out the crushed mixture. The lower part of the sampling pipe 5 is connected to the screening unit. The upper sampling valve 4.1 and the lower sampling valve 4.2 are respectively located at the upper and lower ends of the sampling pipe 5. The volume of the cavity between the upper sampling valve 4.1 and the lower sampling valve 4.2 in the sampling pipe 5 is a fixed value. During sampling, the lower sampling valve 4.2 is closed first, and then the upper sampling valve 4.1 is opened. In this invention, the sampling time within a set period can be calculated through a limited number of experiments. Within 10 seconds (generally), once the sampling tube 5 is just filled with the mixture, the upper sampling valve 4.1 is closed and the lower sampling valve 4.2 is opened to release the mixture into the screening unit. Then, the lower sampling valve 4.2 is closed and the upper sampling valve 4.1 is opened sequentially, repeating the cycle. Both the upper and lower sampling valves 4.1 and 4.2 are electrically controlled on / off valves. In this embodiment, the upper and lower sampling valves are set as 24VDC pneumatic valves or 220VAC electric slide gate valves. The vibrating motor 6 is a known device for emptying materials from a container by vibration. The vibrating motor is fixed to the outside of the sampling tube and is used to empty any remaining material inside the sampling tube 5. In this embodiment, the vibrating motor 6 is a YZS-30-0.5 type with a power of 500W. During the process of opening the lower sampling valve 4.2 and emptying the sampling tube 5, the vibrating motor 6 only needs to operate for 3-5 seconds.

[0021] The screening unit includes a vibrating screen 7; the vibrating screen 7 is a known linear vibrating screen, including a feed inlet, a discharge pipe 8, and a screen. There are four discharge pipes 8, and the screen has three layers: upper, middle, and lower, with the mesh size decreasing from coarse to fine from top to bottom. During operation, the feed inlet receives the mixed material flowing out of the sampling pipe 6, and the four discharge pipes 8 are used to guide the screened material flowing out of each layer of screen to the weighing unit. In this embodiment, the mesh sizes of the upper, middle, and lower screens are set to 10, 5, and 2.5 mm, respectively, resulting in four particle size ranges for the screened material: ≥10 mm, (10-5) mm, (5-2.5) mm, and <2.5 mm.

[0022] The weighing unit includes: four electronic scales, which are known electronic hopper scales. Each scale corresponds to a vibrating screen outlet. Each scale is equipped with a hopper, a force sensor, and a drain valve. The scales can weigh the gross weight, tare weight, and net weight of the material in the hopper and can automatically zero. There are at least three force sensors, which are used to sense the net weight of the material flowing into the hopper and transmit the measurement results to the calculation and control unit. The drain valve is used to discharge the material from the hopper and is an electrically controlled automatic valve. The force sensors are load cells with buffer devices or bridge-type load cells. These devices can absorb and disperse impact forces, protect the core components of the sensor from damage, and improve the service life of the force sensor. In this embodiment, the force sensor selected is the Transcell BSS-15kg model, which has strong pressure and impact resistance and a theoretical lifespan of 100,000 cycles.

[0023] The calculation and control unit includes: a weighing and calculation module, a display module, and an industrial control computer. The weighing and calculation module is used to collect real-time data of the material weight in each electronic scale hopper and transmit it to the industrial control computer. The industrial control computer calculates the total weight of the four different particle sizes in this batch of mixture and the percentage value of each different particle size. Then, it compares the percentage value with the set value to calculate the real-time value of the vertical shaft crusher 9 main shaft motor speed adjustment, and adjusts the speed of the vertical shaft crusher main shaft motor in real time through the frequency converter. The display module is used to digitally display the real-time value of the electronic scale weight data (e.g., net weight of material) and includes: vertical shaft crusher, sampling unit, screening unit, weighing unit, and calculation and control unit.

[0024] The main shaft motor of the vertical shaft crusher is driven by a frequency converter. The sand and gravel raw materials are fed into the cavity from the upper feed port 1 of the vertical shaft crusher through a vibrating feeder or belt conveyor. The crushed mixture flows out continuously through the lower discharge port 2 and is then transported to the subsequent screening process by the discharge conveyor belt 3. The mixture includes sand and gravel of different particle sizes and stone powder.

[0025] The sampling unit includes a sampling pipe, an upper sampling valve 4.1, and a lower sampling valve 4.2. The upper part of the sampling pipe is inserted into the discharge port 2 of the vertical shaft impact crusher to draw out the crushed mixture. The lower part of the sampling pipe is connected to the screening unit through a discharge cylinder 5. The upper sampling valve 4.1 and the lower sampling valve 4.2 are respectively located at the upper and lower ends of the sampling pipe. The volume of the cavity between the upper sampling valve 4.1 and the lower sampling valve 4.2 in the sampling pipe is a fixed value. During sampling, the lower sampling valve 4.2 is closed first, and then the upper sampling valve 4.1 is opened. After the sampling pipe is filled with the mixture, the upper sampling valve 4.1 is closed and the lower sampling valve 4.2 is opened to release all the mixture to the screening unit. Then, the lower sampling valve 4.2 is closed and the upper sampling valve 4.1 is opened in sequence, and the cycle is repeated. Both the upper sampling valve 4.1 and the lower sampling valve 4.2 are electrically controlled automatic valves.

[0026] The screening unit includes: a vibrating screen 7; the vibrating screen 7 is provided with upper, middle and lower screens, and the mesh size of the upper, middle and lower screens gradually decreases from coarse to fine; the vibrating screen 6 includes a feed pipe and four discharge pipes 8 screened according to different mesh sizes; the feed pipe is used to receive the mixed material flowing out of the sampling pipe, and the materials flowing out of the four discharge pipes 8 are respectively led out to the weighing and calculation unit.

[0027] The weighing and calculation unit includes four hoppers: hopper one, hopper two, hopper three, and hopper four. Each hopper is equipped with a weighing sensor and a drain valve 7.1. The weighing sensor is used to measure the weight of materials of different particle sizes flowing into each of the four hoppers and sends the measurement results to the calculation and control unit. The drain valve 7.1 is used to store or discharge materials from the hoppers and is an electrically controlled automatic valve.

[0028] The calculation and control unit includes: a weighing and calculation module, a display module, and an industrial control computer; the weighing and calculation module is used to collect real-time data of the material weight of each hopper and transmit it to the industrial control computer, the industrial control computer calculates the weight ratio of the four different particle sizes in the batch of mixture, compares the ratio with the set value, calculates the real-time value of the vertical shaft crusher main shaft motor speed adjustment, and adjusts the speed of the vertical shaft crusher main shaft motor in real time through the frequency converter.

[0029] As another embodiment of the automatic particle size adjustment system for vertical shaft impact crusher of this utility model, in operation, the vibration frequency of the vibrating feeder is adjustable, and the industrial control computer adjusts the real-time value according to the speed to adjust the vibration frequency of the vibrating feeder in real time.

[0030] As another embodiment of the automatic particle size adjustment system for vertical shaft impact crusher of this utility model, the conveying speed of the belt conveyor is adjustable during operation, and the industrial control computer adjusts the real-time value according to the speed to adjust the conveying speed of the belt conveyor in real time.

[0031] As another embodiment of the automatic particle size adjustment system for vertical shaft impact crusher of this utility model, during operation, the industrial control computer adjusts the real-time value according to the speed, and at the same time adjusts the speed of the main shaft motor of the vertical shaft impact crusher and the vibration frequency of the vibrating feeder.

[0032] As another embodiment of the automatic particle size adjustment system for vertical shaft impact crusher of this utility model, during operation, the industrial control computer adjusts the real-time value according to the speed, and at the same time adjusts the speed of the main shaft motor of the vertical shaft impact crusher and the conveying speed of the belt conveyor.

[0033] As another embodiment of the automatic particle size adjustment system for vertical shaft impact crusher of this utility model, in operation, the industrial control computer estimates the crushing speed and output trend of the vertical shaft impact crusher in real time based on the average total weight of the material collected by the sampling pipe in a set time period within a set limited batch, combined with the area ratio of the sampling pipe inlet to the discharge port of the vertical shaft impact crusher, and with reference to the pseudo specific gravity of the crushed mixture, thereby replacing the metering function of the downstream through belt scale. For example, taking the LM8500 vertical shaft impact crusher as an example, with a nominal processing capacity of 230~550t / h, when the ratio of the cross-sectional area of ​​the discharge port 2 of the vertical shaft impact crusher to that of the sampling pipe 5 is 10:1, the actual sampling time is 10 seconds, and the total amount of material obtained by the sampling pipe 5 is 120Kg, then the hourly output of the vertical shaft impact crusher can be calculated to be approximately: 12×6×60×(10+1) / 1000≈475t / h. Under the condition that the feed rate (speed) remains constant and the material type is the same, the accurate value of the hourly crushing capacity of the vertical shaft impact crusher can be calculated by sampling and calculating at least 10 batches.

[0034] This utility model discloses an automatic discharge particle size adjustment system for a vertical shaft impact crusher. By precisely controlling the main shaft speed and feed rate of the vertical shaft impact crusher in real time, it achieves accurate control of the discharge particle size ratio, with a high degree of automation, greatly improving the working efficiency of the crusher. It is an adaptive crushing quality control system that ensures the vertical shaft impact crusher operates in the optimal state.

[0035] The device of this utility model has a simple structure and is easy to automate. The running time and rotation speed of the controlled object in each step are continuously adjustable. It is easy to operate and helps to save energy and reduce consumption.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. An automatic particle size adjustment system for a vertical shaft impact crusher, comprising: a feeding unit, a vertical shaft impact crusher, a discharge unit, and a conveying unit. The feeding unit includes a belt conveyor or a vibrating feeder. The belt conveyor or vibrating feeder drives the vertical shaft crusher (vertical shaft crusher) via a frequency converter. The main shaft motor of the vertical shaft crusher is driven by the frequency converter. The sand and gravel raw materials are fed into the upper main feed inlet of the vertical shaft crusher through the belt conveyor or vibrating feeder. The crushed mixture flows out through the discharge outlet of the lower discharge unit and is then conveyed to the subsequent screening stage via the discharge conveyor belt of the conveying unit. Its features are, The discharge unit is equipped with a sampling unit, a sieving unit, a weighing unit, and a calculation and control unit in sequence at its discharge port; The sampling unit includes: a sampling pipe, an upper sampling valve, a lower sampling valve, and a vibrating motor; the upper part of the sampling pipe is inserted into the discharge port of the vertical shaft crusher, and the lower part of the sampling pipe is connected to the screening unit; the upper sampling valve and the lower sampling valve are respectively located at the upper and lower ends of the sampling pipe; the cavity volume between the upper and lower sampling valves in the sampling pipe is a fixed value; during sampling, the lower sampling valve is closed first, then the upper sampling valve is opened; after the sampling pipe is filled with the mixture, the upper sampling valve is closed and the lower sampling valve is opened to release all the mixture to the screening unit; then the lower sampling valve is closed and the upper sampling valve is opened in sequence, and the cycle is repeated; both the upper and lower sampling valves are electrically controlled automatic opening and closing valves; The vibrating motor is fixedly connected to the outside of the sampling tube and is a device that clears the material inside the container by vibration, used to clear the material remaining inside the sampling tube; The screening unit includes a vibrating screen; the vibrating screen is a linear vibrating screen, including a feed inlet, a discharge pipe, and a screen mesh. The screen mesh has three layers: upper, middle, and lower, with the mesh size of the upper, middle, and lower layers decreasing from coarse to fine from top to bottom. The vibrating screen includes a feed inlet and a discharge pipe adapted to different mesh sizes. The feed inlet is used to receive the mixed material flowing out of the sampling pipe, and the discharge pipe is used to guide the screened material flowing out of each layer of screen to the weighing and calculation unit.

2. An automatic adjustment system as described in claim 1, characterized in that, The weighing unit includes: an electronic scale, which is an electronic hopper scale. Each electronic scale corresponds to a vibrating screen discharge pipe. Each electronic scale is equipped with a hopper, a weighing force sensor, and a drain valve. The electronic scale can weigh gross weight, tare weight, and net weight respectively, and can automatically zero. The weighing force sensor is used to sense and measure the net weight of materials of different particle sizes flowing into each hopper, and transmits the measurement results to the calculation and control unit. The drain valve is used to store or discharge materials in the hopper.

3. An automatic adjustment system as described in claim 1, characterized in that, The calculation and control unit includes: a weighing and calculation module, a display module, and an industrial control computer; the weighing and calculation module is used to collect real-time weight data of materials in each electronic scale hopper and transmit it to the industrial control computer, the industrial control computer calculates the total weight of materials of different particle sizes in this batch of mixture and the percentage value of materials of different particle sizes, and then compares the percentage value with the set value to calculate the real-time value of the vertical shaft crusher main shaft motor speed adjustment, and adjusts the speed of the vertical shaft crusher main shaft motor in real time through the frequency converter; the display module is used to digitally display the real-time value of the electronic scale weight data.

4. An automatic adjustment system as described in claim 1, characterized in that, There are four discharge pipes and electronic scales.

5. An automatic adjustment system as described in claim 2, characterized in that, The weighing sensor is a weighing sensor with a buffer device or a bridge-type weighing sensor.

6. An automatic adjustment system as described in claim 1, characterized in that, The upper sampling valve and the lower sampling valve are electrically controlled automatic valves.

7. An automatic adjustment system as described in claim 2, characterized in that, The vent valve is an electrically controlled automatic valve.

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