An airflow pulverizing and pressure regulating system

Abstract

This utility model relates to the field of airflow pulverization technology and discloses an airflow pulverization pressure regulation system, including: a control module; a power frequency air compressor and a variable frequency air compressor, the variable frequency air compressor including a first variable frequency air compressor and a second variable frequency air compressor, the control module establishing communication connections with the power frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor respectively; an airflow pulverizer, the compressed air output terminals of the power frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor are all fluidly connected to the compressed air input terminal of the airflow pulverizer. By setting up a control module and establishing communication connections between it and the power frequency air compressor and the two variable frequency air compressors, centralized and flexible control of the air supply equipment is realized, ensuring that the airflow pulverizer can obtain a stable and suitable compressed air supply under different operating conditions, improving the continuity and reliability of pulverization operations.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverization technology, specifically to an airflow pulverization pressure regulation system. Background Technology

[0002] In the air jet milling process of battery materials, the air jet mill is one of the core processing equipment, and its normal operation depends on a stable supply of compressed air that meets process requirements. Currently, battery material companies generally use manual operation of air compressors to meet the compressed air requirements of the equipment. This means that workers manually turn the air compressor on and off on-site and adjust the output pressure of the air compressor according to production experience or process requirements. In this operating mode, workers need to frequently travel between the air compressor placement area and the air jet mill operation area, which not only increases the labor intensity of personnel but also has the problem of untimely operation response, making it difficult to quickly adapt to the dynamic compressed air pressure requirements of different batches of battery materials in the air jet milling process.

[0003] Meanwhile, manual operation of air compressors also presents significant cost and energy waste issues. On the one hand, to ensure a constant supply of compressed air to the air jet mill, operators often need to start the air compressor in advance or delay shutting it down after the equipment has stopped, resulting in the air compressor remaining running during non-production periods and causing a significant waste of electrical energy. On the other hand, manual pressure adjustment is difficult to precisely control within the optimal range for the process, potentially affecting the quality of battery material grinding due to excessively high or low pressure, or further increasing unnecessary energy consumption. Moreover, manual monitoring and operation directly increase the company's labor costs, hindering both production efficiency and cost control. Utility Model Content

[0004] In view of this, the present invention provides an airflow pulverizing and pressure regulating system to solve the problem that adjusting the pressure of an air compressor in the prior art often requires manual adjustment, which is time-consuming, labor-intensive, and costly.

[0005] This utility model provides an airflow pulverizing and pressure regulating system, comprising:

[0006] Control module;

[0007] The system includes a power frequency air compressor and a variable frequency air compressor. The variable frequency air compressor includes a first variable frequency air compressor and a second variable frequency air compressor. The control module establishes communication connections with the power frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor, respectively.

[0008] The compressed air output terminals of the air jet mill, the industrial frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor are all fluidly connected to the compressed air input terminal of the air jet mill.

[0009] Beneficial Effects: By setting up a control module and establishing communication connections with the mains-frequency air compressor and two variable-frequency air compressors, while connecting the compressed air output of all air compressors to the air jet mill, centralized and flexible control of the air supply equipment is achieved. This system not only relies on the mains-frequency air compressor to ensure the stability of the basic air supply, but also allows for precise adjustment of the compressed air output according to the actual needs of the air jet mill through the coordinated regulation of the two variable-frequency air compressors. This effectively broadens the system's air supply pressure and flow rate adjustment range, ensuring that the air jet mill receives a stable and suitable compressed air supply under different operating conditions, thus improving the continuity and reliability of the pulverizing operation.

[0010] In one optional implementation, the pressure acquisition module is located on the fluid connection path between the compressed air output end of the power frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor and the compressed air input end of the air jet mill. The pressure acquisition module establishes a communication connection with the control module to acquire real-time pressure data of compressed air and transmit it to the control module.

[0011] Beneficial effects: It can collect the actual pressure data of compressed air during the transmission process in real time and feed the data back to the control module in a timely manner, so that the control module can dynamically grasp the air supply pressure status and improve the system's ability to dynamically control the air supply pressure.

[0012] In one optional implementation, the pressure acquisition module is a pressure sensor, which is located near the compressed air input end of the air jet mill. The signal output end of the pressure sensor is electrically connected to the signal input end of the control module, and the measurement range of the pressure sensor matches the compressed air pressure range of the air jet mill.

[0013] Beneficial effects: The installation position close to the input end of the pulverizer ensures that the collected pressure data is consistent with the actual inlet pressure of the pulverizer, matches the measurement setting of the pulverizing pressure range, and ensures the accuracy of pressure control during airflow pulverization.

[0014] In one optional embodiment, the compressed air output ends of the power frequency air compressor, the first variable frequency air compressor, and the second variable frequency air compressor are fluidly connected to the compressed air input end of the airflow pulverizer via a fluid pipeline, and the inner wall of the fluid pipeline is provided with an anti-corrosion coating.

[0015] Beneficial effects: The anti-corrosion layer can effectively resist the erosion of the inner wall of the pipeline by moisture, impurities or corrosive substances that may be contained in the compressed air, delay the aging and damage of the pipeline, extend the service life of the fluid pipeline, and ensure the cleanliness of the system operation and the durability of the equipment.

[0016] In one optional embodiment, the fluid pipeline is further provided with a solenoid valve assembly, which includes three independent solenoid valves. The three independent solenoid valves are respectively and correspondingly set at the connection nodes between the compressed air output ends of the power frequency air compressor, the first variable frequency air compressor and the second variable frequency air compressor and the fluid pipeline.

[0017] Each independent solenoid valve has its valve body fixedly connected to the fluid pipeline, and the control terminal of each independent solenoid valve establishes a communication connection with the control module to independently control the on / off state of the fluid pipeline between the corresponding air compressor and the air jet pulverizer.

[0018] Beneficial effects: Three independent solenoid valves are installed on the fluid pipeline to control the connection between the three air compressors and the pipeline, respectively. The control terminals of the solenoid valves communicate with the control module, realizing independent control of the fluid passage between each air compressor and the air jet pulverizer. The control module can start and stop the passage corresponding to a certain air compressor individually according to the actual air supply demand, without the need for overall system adjustment.

[0019] In one optional embodiment, an arc-shaped flow guide joint is provided at the bend of the fluid pipeline. The inner diameter of the arc-shaped flow guide joint is the same as the inner diameter of the fluid pipeline, and the inner wall of the arc-shaped flow guide joint is flush with the inner wall of the fluid pipeline. The two ends of the arc-shaped flow guide joint are respectively connected to the adjacent fluid pipeline to reduce the pressure loss of compressed air at the bend of the pipeline.

[0020] Beneficial effects: By installing an arc-shaped flow guide joint at the bend of the fluid pipeline, with the inner diameter of the joint being the same as the inner diameter of the pipeline and the inner wall being flush, the arc-shaped structure can guide the compressed air to flow smoothly when turning, greatly reducing the airflow vortex and resistance caused by the right-angle bend of the pipeline, thereby reducing the pressure loss of compressed air at the bend.

[0021] In one alternative implementation, a filter assembly is provided near the air compressor output end of the fluid pipeline. The filter assembly is communicatively connected to the control module and sends a cleaning reminder signal to the control module when the filter screen becomes clogged.

[0022] Beneficial effects: By installing a filter assembly near the air compressor output end in the fluid pipeline, and having the filter assembly communicate with the control module and send a cleaning reminder when it becomes clogged, the system avoids insufficient air intake, pressure drop, or filtration failure caused by filter clogging. This reduces system failures caused by untimely maintenance and improves the timeliness and convenience of system maintenance.

[0023] In one alternative implementation, the power frequency air compressor is equipped with a load detection unit, which is connected to the control module. The load detection unit is adapted to detect the load and send a signal to the control module to adjust the output power of the variable frequency air compressor.

[0024] Beneficial effects: The fixed frequency air compressor is equipped with a load detection unit and connected to the control module. By detecting the load, the output power of the variable frequency air compressor is adjusted. The load detection unit can monitor the operating load of the fixed frequency air compressor in real time. When the load of the fixed frequency air compressor is high, the control module can reduce the output power of the variable frequency air compressor in time to avoid the total system load from exceeding the design limit and prevent air compressor damage, circuit failure or system shutdown caused by overload.

[0025] In one optional implementation, the control module is connected to a remote control interface, which is suitable for receiving the center value of the compressed air pressure range input by the operator, sending start and stop commands to the power frequency air compressor, the first variable frequency air compressor and the second variable frequency air compressor, and synchronously feeding back the operating status of each air compressor.

[0026] Beneficial effects: The control module connects to a remote control interface, supports inputting the center value of the pressure range, sending start and stop commands, and providing feedback on the operating status. Operators do not need to operate on-site; they can conveniently set the system target pressure and send air compressor start and stop commands through the remote control interface, improving the convenience and flexibility of operation.

[0027] In one optional implementation, the remote control interface receives and displays real-time compressed air pressure data from the pressure acquisition module and load data of the power frequency air compressor fed back by the load detection unit.

[0028] Beneficial effects: The remote control interface displays real-time pressure data from the pressure acquisition module and load data from the industrial frequency air compressor. Operators can intuitively and in real-time obtain key operating parameters of the system through the remote interface, which facilitates timely detection of abnormal pressure or excessive load, and improves the monitorability of system operation and the timeliness of fault handling. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the airflow pulverizing and pressure regulating system of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Control module; 2. Industrial frequency air compressor; 3. First variable frequency air compressor; 4. Second variable frequency air compressor; 5. Air jet pulverizer. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] In the airflow pulverization process of battery materials, the airflow pulverizer requires a stable and compliant supply of compressed air to operate normally. However, current technology still relies on manual operation of the air compressor: workers must manually switch the equipment on and off on-site, adjusting the output pressure based on experience or process requirements. This not only requires frequent back-and-forth movement between the air compressor and pulverizer areas, increasing labor intensity, but also suffers from operational lag, making it difficult to adapt to the dynamic compressed air pressure requirements of different batches of materials. Furthermore, manual operation results in significant waste: to ensure air supply, workers often start the machine early or delay shutting it down, causing the air compressor to idle during non-production periods, consuming a large amount of electricity; manual pressure adjustment is difficult to precisely control within the optimal range for the process, and improper pressure can easily affect the pulverization quality of materials or lead to additional energy consumption.

[0038] The following is combined with Figure 1 The following describes embodiments of the present invention.

[0039] According to an embodiment of this utility model, an airflow pulverizing and pressure regulating system is provided, comprising: a control module 1; a power frequency air compressor 2 and a variable frequency air compressor, the variable frequency air compressor including a first variable frequency air compressor 3 and a second variable frequency air compressor 4, the control module 1 establishing communication connections with the power frequency air compressor 2, the first variable frequency air compressor 3 and the second variable frequency air compressor 4 respectively; and an airflow pulverizer 5, wherein the compressed air output terminals of the power frequency air compressor 2, the first variable frequency air compressor 3 and the second variable frequency air compressor 4 are all fluidly connected to the compressed air input terminal of the airflow pulverizer 5.

[0040] By adopting the above system architecture, unified scheduling and coordinated operation of multiple air compressors can be achieved. The fixed-frequency air compressor 2, as the basic air supply unit, provides a stable and continuous air source output; while the two variable-frequency air compressors can dynamically adjust their operating frequency and output air volume according to actual working conditions through the control module 1, thereby achieving wide-range precise adjustment of the system's total air supply pressure and flow rate. This structure not only helps ensure a continuous and adaptable compressed air supply for the air jet mill 5 under different working conditions, but also significantly improves the system's ability to cope with load fluctuations, enhancing the continuity of the pulverizing process and the consistency of product quality.

[0041] In some embodiments, the pressure acquisition module is located on the fluid connection path between the compressed air output end of the power frequency air compressor 2, the first variable frequency air compressor 3 and the second variable frequency air compressor 4 and the compressed air input end of the airflow pulverizer 5, and the pressure acquisition module establishes a communication connection with the control module 1 to acquire real-time pressure data of compressed air and transmit it to the control module 1.

[0042] It can collect the actual pressure data of compressed air during transmission in real time and feed the data back to the control module 1 in a timely manner, so that the control module 1 can dynamically grasp the air supply pressure status. This breaks the limitation of traditional systems that cannot monitor pressure in real time, provides accurate data support for subsequent pressure adjustment, avoids the air supply pressure deviating from the required range due to unknown or delayed pressure, and prevents fluctuations in airflow pulverization effect, thereby improving the system's dynamic control capability over air supply pressure.

[0043] Furthermore, the pressure acquisition module is a pressure sensor, positioned near the compressed air input of the air jet mill 5. The signal output of the pressure sensor is electrically connected to the signal input of the control module 1, and the measurement range of the pressure sensor matches the compressed air pressure range of the air jet mill. This ensures that the acquired pressure data accurately reflects the actual pressure at the inlet of the air jet mill 5, avoiding data distortion caused by improper measurement point location. Simultaneously, selecting a sensor that matches the process requirements prevents measurement errors or equipment damage caused by range mismatch, thus improving the accuracy of pressure control and system reliability. Optionally, the pressure acquisition module can also use a pressure transmitter or a composite sensor integrating multi-parameter sensing functions to simultaneously monitor variables such as pressure and temperature, providing more comprehensive system status information.

[0044] In some embodiments, the compressed air output ends of the industrial frequency air compressor 2, the first variable frequency air compressor 3, and the second variable frequency air compressor 4 are fluidly connected to the compressed air input end of the airflow pulverizer 5 via fluid pipelines, the inner walls of which are provided with anti-corrosion coatings. This significantly extends the service life of the fluid pipelines and reduces the risk of leakage or system contamination caused by pipeline corrosion. Simultaneously, the presence of the anti-corrosion coating prevents rust or coating flaking from entering the pulverizer with the airflow, avoiding adverse effects on the purity of the pulverized product and the internal components of the equipment, thus contributing to maintaining long-term stable system operation and ensuring the quality of the final product. Optionally, stainless steel pipes or pipes with coated inner walls can also be used to further improve corrosion resistance and mechanical strength.

[0045] Specifically, an arc-shaped flow guide joint is installed at the bend of the fluid pipeline. The inner diameter of the arc-shaped flow guide joint is the same as the inner diameter of the fluid pipeline, and its inner wall is flush with the inner wall of the fluid pipeline. Both ends of the arc-shaped flow guide joint are connected to adjacent fluid pipelines to reduce pressure loss of compressed air at the bend. The arc-shaped flow guide joint, with its identical inner diameter and flush inner wall, guides the compressed air to flow smoothly at the bend, significantly reducing airflow vortices and resistance caused by right-angle bends, thereby reducing pressure loss at the bend. Furthermore, the identical inner diameter and flush inner wall prevent throttling at the connection between the joint and the pipeline, further ensuring the stability of airflow transmission.

[0046] It is worth noting that a filter assembly is installed near the air compressor output end of the fluid pipeline. This filter assembly is communicatively connected to control module 1, and sends a cleaning reminder signal to control module 1 when the filter becomes clogged. By installing a filter assembly near the air compressor output end of the fluid pipeline, and by having the filter assembly communicate with control module 1 and send a cleaning reminder when clogged, the filter assembly can pre-treat the compressed air output from the air compressor, filtering out impurities such as dust, oil mist, and moisture. This prevents impurities from entering subsequent pipelines or the airflow pulverizer 5, ensuring the cleanliness of the compressed air and avoiding impurities affecting the quality of the pulverized products or damaging the precision components inside the pulverizer. The clog reminder function allows operators to be aware of the filter status in a timely manner, preventing insufficient air intake, pressure drop, or filtration failure due to filter clogging. This reduces system failures caused by untimely maintenance and improves the timeliness and convenience of system maintenance. The filter assembly can also be equipped with a differential pressure sensor or an automatic backflushing cleaning device to further improve filtration efficiency and service life.

[0047] In some embodiments, the fluid pipeline is further provided with a solenoid valve assembly, which includes three independent solenoid valves. The three independent solenoid valves are respectively and correspondingly set at the connection nodes between the compressed air output ends of the power frequency air compressor 2, the first variable frequency air compressor 3 and the second variable frequency air compressor 4 and the fluid pipeline.

[0048] Each independent solenoid valve has its valve body fixedly connected to the fluid pipeline, and the control terminal of each independent solenoid valve establishes a communication connection with the control module 1 to independently control the on / off state of the fluid pipeline between the corresponding air compressor and the air jet pulverizer 5.

[0049] Three independent solenoid valves are installed on the fluid pipeline, each controlling the connection between the three air compressors and the pipeline. The solenoid valve control terminals communicate with control module 1, enabling independent control of the fluid path between each air compressor and the air jet mill 5. Control module 1 can individually start and stop the path corresponding to a specific air compressor based on actual air supply needs, without requiring overall system adjustments. When an air compressor malfunctions or is not needed, its corresponding solenoid valve can be closed without affecting the normal air supply to other air compressors, improving the system's flexibility and fault tolerance, ensuring the continuity of air supply to the air jet mill 5, and facilitating maintenance and repair of individual air compressors. The solenoid valves can also be electric ball valves or pneumatic shut-off valves, equipped with valve position feedback to improve control accuracy and status monitoring capabilities.

[0050] In some embodiments, the fixed-frequency air compressor 2 is equipped with a load detection unit connected to the control module 1. The load detection unit is adapted to detect the load and send a signal to the control module 1 to adjust the output power of the variable-frequency air compressor, thus preventing total load overload. The fixed-frequency air compressor 2, equipped with a load detection unit and connected to the control module 1, adjusts the output power of the variable-frequency air compressor by detecting the load. The load detection unit can monitor the operating load of the fixed-frequency air compressor 2 in real time. When the load of the fixed-frequency air compressor 2 is high, the control module 1 can promptly reduce the output power of the variable-frequency air compressor to prevent the total system load from exceeding the design limit, thus preventing air compressor damage, circuit failure, or system shutdown caused by overload. Simultaneously, by rationally allocating the load between the fixed-frequency and variable-frequency air compressors, the overall system operating efficiency can be optimized, energy waste reduced, equipment lifespan extended, and the safety and stability of system operation ensured. The load detection unit can also be expanded to include a power sensor, current transformer, or vibration monitoring module, thereby achieving more comprehensive equipment status monitoring and health management.

[0051] In some embodiments, the control module 1 is connected to a remote control interface, suitable for receiving the center value of the compressed air pressure range input by the operator, sending start / stop commands to the fixed-frequency air compressor 2, the first variable-frequency air compressor 3, and the second variable-frequency air compressor 4, and synchronously feeding back the operating status of each air compressor. The control module 1, connected to the remote control interface, supports inputting the center value of the pressure range, sending start / stop commands, and feeding back the operating status. Operators do not need to be on-site; they can conveniently set the system target pressure and send air compressor start / stop commands through the remote control interface, improving operational convenience and flexibility. Simultaneously, the real-time feedback of the operating status of each air compressor allows operators to promptly grasp the overall system operation, facilitating remote monitoring and management of the system, reducing on-site inspection workload, and improving system management efficiency.

[0052] Furthermore, the remote control interface receives and displays real-time compressed air pressure data from the pressure acquisition module and load data from the load detection unit for the industrial frequency air compressor 2. The remote control interface displays both the real-time pressure data from the pressure acquisition module and the load data from the industrial frequency air compressor 2. Operators can intuitively and in real-time obtain key system operating parameters through the remote interface without needing to check various instruments on-site. This allows for quick determination of whether the compressed air pressure is within the set range and whether the load on the industrial frequency air compressor 2 is normal, facilitating timely detection of abnormal pressure or excessive load, and improving the system's monitorability and the timeliness of fault handling.

[0053] When the airflow pulverizer pressure regulating system is working, the operator first inputs the center value of the compressed air pressure range required by the airflow pulverizer 5 and the allowable fluctuation range through the remote control interface. After receiving the instruction, the control module 1, in conjunction with the initial system setting logic, prioritizes starting the industrial frequency air compressor 2 to provide a basic and stable compressed air supply to the airflow pulverizer 5. At the same time, the pressure acquisition module collects the actual pressure data of the compressed air in the fluid pipeline in real time, and the load detection unit synchronously monitors the real-time load of the industrial frequency air compressor 2, and transmits both types of data to the control module 1.

[0054] Control module 1 compares the real-time pressure data with the set pressure range. If the actual pressure is lower than the lower limit of the set range and the load of the fixed frequency air compressor 2 is not at its rated load, it controls the first variable frequency air compressor 3 to start and gradually increase its output power to supplement the compressed air flow and increase the pressure. If the actual pressure still does not meet the standard or the pressure drops again due to changes in the crushing conditions, and the load of the fixed frequency air compressor 2 is close to the upper limit, it further starts the second variable frequency air compressor 4 to coordinate the adjustment until the actual pressure stabilizes within the set range. If the actual pressure is higher than the upper limit of the set range, control module 1 first reduces the output power of the second variable frequency air compressor 4, closes its corresponding independent solenoid valve if necessary, and then adjusts the power of the first variable frequency air compressor 3 according to the pressure change to ensure that the pressure accurately matches the requirements.

[0055] The anti-corrosion coating on the inner wall of the fluid pipeline, together with the filter assembly near the air compressor output, works to resist the corrosion of the pipeline by impurities in the compressed air, filter out dust, oil mist and other impurities, and ensure the cleanliness of the compressed air. The arc-shaped flow guide joint at the pipeline bend reduces airflow pressure loss and maintains stable airflow transmission. At the same time, the remote control interface displays pressure data, load data of the industrial frequency air compressor 2 and the operating status of each air compressor in real time. If the filter screen of the filter assembly is clogged or the load of a certain air compressor is abnormal, the control module 1 will immediately issue a cleaning reminder or fault warning through the remote interface. The operator can remotely close the corresponding solenoid valve of the faulty air compressor to achieve offline maintenance, while other air compressors continue to supply air, ensuring that the airflow pulverizer 5 continuously obtains stable and suitable compressed air and ensuring continuous and reliable pulverization operation.

[0056] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. An air jet size reduction pressure regulating system, comprising: include: Control module (1); The system includes a power frequency air compressor (2) and a variable frequency air compressor, wherein the variable frequency air compressor includes a first variable frequency air compressor (3) and a second variable frequency air compressor (4), and the control module (1) establishes communication connections with the power frequency air compressor (2), the first variable frequency air compressor (3) and the second variable frequency air compressor (4) respectively. The compressed air output terminals of the airflow pulverizer (5), the power frequency air compressor (2), the first variable frequency air compressor (3), and the second variable frequency air compressor (4) are all fluidly connected to the compressed air input terminal of the airflow pulverizer (5).

2. The jet milling pressure regulating system of claim 1, wherein, It also includes a pressure acquisition module, which is set on the fluid connection path between the compressed air output end of the power frequency air compressor (2), the first variable frequency air compressor (3) and the second variable frequency air compressor (4) and the compressed air input end of the airflow pulverizer (5). The pressure acquisition module establishes a communication connection with the control module (1) to acquire real-time pressure data of compressed air and transmit it to the control module (1).

3. The airflow pulverizing and pressure regulating system according to claim 2, characterized in that, The pressure acquisition module is a pressure sensor. The pressure sensor is located near the compressed air input end of the airflow pulverizer (5). The signal output end of the pressure sensor is electrically connected to the signal input end of the control module (1). The measurement range of the pressure sensor matches the compressed air pressure range of the airflow pulverizer.

4. The jet milling pressure regulating system of claim 3, wherein, The compressed air output ends of the power frequency air compressor (2), the first variable frequency air compressor (3) and the second variable frequency air compressor (4) are fluidly connected to the compressed air input end of the airflow pulverizer (5) through fluid pipelines, and the inner wall of the fluid pipelines is provided with an anti-corrosion coating.

5. The jet milling pressure regulating system of claim 4, wherein, The fluid pipeline is also equipped with a solenoid valve assembly, which includes three independent solenoid valves. The three independent solenoid valves are respectively set at the connection nodes between the compressed air output end of the power frequency air compressor (2), the first variable frequency air compressor (3) and the second variable frequency air compressor (4) and the fluid pipeline. The valve body of each independent solenoid valve is fixedly connected to the fluid pipeline, and the control end of each independent solenoid valve establishes a communication connection with the control module (1) to independently control the on / off state of the fluid pipeline between the corresponding air compressor and the air jet pulverizer (5).

6. The jet milling pressure regulating system of claim 5, wherein, The fluid pipeline is provided with an arc-shaped flow guide joint at the bend. The inner diameter of the arc-shaped flow guide joint is the same as the inner diameter of the fluid pipeline, and the inner wall of the arc-shaped flow guide joint is flush with the inner wall of the fluid pipeline. The two ends of the arc-shaped flow guide joint are respectively connected to the adjacent fluid pipeline to reduce the pressure loss of compressed air at the bend of the pipeline.

7. The jet milling pressure regulating system of claim 6, wherein, The fluid pipeline is equipped with a filter assembly near the output end of the air compressor. The filter assembly is communicatively connected to the control module (1). When the filter screen is clogged, it sends a cleaning reminder signal to the control module (1).

8. The jet milling pressure regulating system of claim 7, wherein, The power frequency air compressor (2) is equipped with a load detection unit, which is connected to the control module (1). The load detection unit is adapted to detect the load and send a signal to the control module (1) to adjust the output power of the variable frequency air compressor.

9. The airflow pulverizing and pressure regulating system according to claim 8, characterized in that, The control module (1) is connected to a remote control interface, which is suitable for receiving the center value of the compressed air pressure range input by the operator, sending start and stop commands to the power frequency air compressor (2), the first variable frequency air compressor (3) and the second variable frequency air compressor (4), and synchronously feeding back the operating status of each air compressor.

10. The jet milling pressure regulating system of claim 9, wherein, The remote control interface receives and displays the real-time compressed air pressure data from the pressure acquisition module and the load data of the power frequency air compressor (2) fed back by the load detection unit.

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