Polycarbonate resin particle manufacturing equipment and manufacturing method thereof

Abstract

The invention belongs to the technical field of resin particle production, and particularly relates to polycarbonate resin particle manufacturing equipment and a manufacturing method thereof.The polycarbonate resin particle manufacturing equipment comprises a box body, a feeding hopper is arranged at the top of the box body, a discharging pipe is arranged at the bottom of the box body, a sieve plate is arranged in the box body, and a plurality of evenly-distributed springs are fixed to the two ends of the sieve plate respectively; the other ends of the springs are fixed to the corresponding inner walls of the box body respectively, a vibration detection module and a vibration control module are arranged on the sieve plate, a flow adjusting valve and a feeding speed sensor are arranged in the feeding hopper, a screening detection module is further arranged in the box body, and a central processing module is fixed to the outer wall of one side of the box body. Through cooperative work of all the modules of the intelligent equipment, key parameters in the screening process can be monitored and adjusted in real time, and the screening efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of resin particle production, in particular to polycarbonate resin particle production equipment and a manufacturing method thereof. Background Art

[0002] Resin is a type of polymer compound. Resin is used as raw material for plastic product processing. Resin can be divided into natural resin and synthetic resin. Natural resin refers to amorphous organic matter obtained from the secretions of animals and plants in nature, while synthetic resin refers to resin products obtained by chemical synthesis of simple organic matter or chemical reaction of certain natural products. The more common ones in processing and production include epoxy modified resin, acrylic resin and polycarbonate resin.

[0003] Screening is a crucial step in the production of resin pellets. Currently, when continuously feeding materials over a vibrating screen for screening, it's often difficult to effectively control the screening efficiency, leading to low production efficiency and unstable product quality. Therefore, improvements have been made to address this issue. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a polycarbonate resin particle production device and a manufacturing method thereof.

[0005] The present invention proposes a polycarbonate resin particle production equipment and a manufacturing method thereof, comprising a box body, a feed hopper is provided on the top of the box body, a discharge pipe is provided at the bottom of the box body, a sieve plate is provided inside the box body, a plurality of evenly distributed springs are fixed at both ends of the sieve plate, and the other ends of the springs are fixed on the corresponding inner walls of the box body, a vibration detection module and a vibration control module are provided on the sieve plate, a flow regulating valve and a feed speed sensor are provided in the feed hopper, a screening detection module is also provided in the box body, and a central processing module is fixed on one outer wall of the box body; the feed speed sensor is used to monitor the feed speed in real time and transmit the data to the central processing module, the central processing module adjusts the feed speed by manipulating the flow control valve according to a preset screening efficiency model and real-time screening data; the vibration detection module is used to monitor the vibration frequency and amplitude of the sieve plate and feed the data back to the central processing module, the central processing module adjusts the parameters of the vibration control module driver according to the algorithm, thereby changing the vibration frequency and amplitude of the sieve plate; the screening detection module is used to obtain information such as the distribution density and stacking condition of the particles above the sieve plate, as well as The resin particles after screening are subjected to particle size detection, and the particle size data is transmitted to the central processing module. The central processing module receives the monitoring data from each, analyzes and processes it according to the preset calculation formula and algorithm model, and sends control instructions to each module to realize intelligent control of the entire screening process. The resin particles are poured into the feed hopper and screened on the screen plate. The feed speed sensor monitors the feed speed in real time and transmits the data to the central processing module. The central processing module adjusts the feed speed by manipulating the flow control valve based on the preset screening efficiency model and real-time screening data. The vibration detection module monitors the vibration frequency and amplitude of the screen plate and feeds the data back to the central processing module. The central processing module adjusts the parameters of the vibration control module driver according to the algorithm. The screening detection module obtains information such as the distribution density and accumulation of particles above the screen plate, and performs particle size detection on the screened resin particles, and transmits the particle size data to the central processing module. The screened resin particles fall out of the discharge pipe, so that the screening process is always kept in the optimal state and the screening efficiency is maximized.

[0006] Preferably, the feed speed sensor is installed at the bottom end of the feed hopper; thus, the feed speed of the resin particles can be monitored by the feed speed sensor.

[0007] Preferably, the vibration detection module includes a vibration frequency sensor and a vibration amplitude sensor, a first fixed plate is fixed on one side of the top of the sieve plate, and the vibration frequency sensor and the vibration amplitude sensor are respectively fixed on the top of the first fixed plate; in this way, the vibration frequency and amplitude of the sieve plate can be monitored respectively by the vibration frequency sensor and the vibration amplitude sensor, and the data can be fed back to the central processing module, and the central processing module adjusts the parameters of the vibration control module driver according to the algorithm, thereby changing the vibration frequency and amplitude of the sieve plate.

[0008] Preferably, the screening detection module includes an image recognition sensor and a particle size analyzer. The image recognition sensor is located above the sieve plate and fixed to the top inner wall of the box, and the particle size analyzer is located below the sieve plate and fixed to one side inner wall of the box. The image recognition sensor captures the distribution image of the resin particles on the sieve plate in real time and obtains information such as the distribution density and stacking of the particles through an image analysis algorithm. The particle size analyzer performs particle size detection on the sieved resin particles and transmits the particle size data to the central processing module. The image recognition sensor sets a specific image acquisition area to cover the effective screening area of the sieve plate, and performs high-resolution image acquisition of the morphology and arrangement of the resin particles on the sieve plate. It uses image analysis algorithms such as edge detection and feature extraction to identify the particle outline and relative position relationship, thereby obtaining information such as distribution density and stacking height. The particle size analyzer collects samples of the resin particles under the sieve through an automatic sampling device, and uses principles such as laser diffraction and screening to accurately measure the particle size and distribution range of the particles and generate particle size data.

[0009] Preferably, the flow regulating valve includes a first motor, a shaft column and a sealing disk. The first motor is fixed on the top of the box body, the shaft column is fixedly connected to the output shaft of the first motor and passes through the feed hopper, and the sealing disk is fixed at the end of the shaft column and is located in the feed hopper; after the first motor receives the control signal, it will drive the shaft column and the sealing disk to rotate to a corresponding angle, thereby controlling the feeding of the resin particles.

[0010] Preferably, the flow regulating valve includes an electric push rod and a sealing plate. The electric push rod is fixed on the top of the box body, and the sealing plate is fixedly connected to the output shaft of the electric push rod and extends into the feed hopper. After the electric push rod receives the control signal, it will drive the sealing plate to move horizontally accordingly through the output shaft, thereby controlling the feeding of the resin particles.

[0011] Preferably, the central processing module calculates the screening efficiency by the following formula :

[0012]

[0013] in, is the feed rate, is the vibration frequency, is the vibration amplitude, is the material particle size distribution, is the residence time of the particles on the sieve plate, is the effective opening ratio of the sieve plate, is a coefficient determined experimentally, Constant term, effective opening ratio of the sieve plate It can be obtained by actually measuring the ratio of the sieve plate opening area to the total area of the sieve plate;

[0014] Calculated by the following formula:

[0015] ; ;

[0016] in, is the material stacking thickness, is the area of the sieve plate, is the cross-sectional area of the material at the feed inlet.

[0017] Preferably, the vibration control module includes a drive motor, a shaft and an eccentric wheel. The drive motor is fixed to the top of the screen plate through the second fixed plate. The shaft is fixedly connected to the output shaft of the drive motor. The two eccentric wheels are fixedly mounted on the shaft, and the edges of the two eccentric wheels can contact the top of the first fixed plate and the second fixed plate respectively; the output shaft of the drive motor drives the shaft and the eccentric wheel to rotate, and the eccentric wheel will periodically collide with the first fixed plate and the second fixed plate, thereby causing the screen plate to vibrate.

[0018] Preferably, the vibration control module includes two symmetrically distributed vibration motors, one of which is fixed on the top of the first fixed plate, and the other is fixed on the top of the sieve plate through the second fixed plate; after the vibration motor is working, the sieve plate can be caused to vibrate through the vibration motor.

[0019] The present invention also provides a method for producing polycarbonate resin particles, comprising the following steps:

[0020] S1. Pour the resin pellets into the feed hopper;

[0021] S2. Resin particles enter the box from the feed hopper and are screened on the sieve plate. The feed rate sensor monitors the feed rate in real time and transmits the data to the central processing module. The central processing module adjusts the feed rate by manipulating the flow control valve based on the preset screening efficiency model and real-time screening data. The vibration detection module monitors the vibration frequency and amplitude of the sieve plate and feeds the data back to the central processing module. The central processing module adjusts the parameters of the vibration control module driver according to the algorithm. The screening detection module obtains information such as the distribution density and accumulation of particles above the sieve plate, and performs particle size detection on the screened resin particles, and transmits the particle size data to the central processing module.

[0022] S3. The sieved resin particles fall out from the discharge pipe.

[0023] Compared with the prior art, the present invention provides a polycarbonate resin particle production device and a manufacturing method thereof, which have the following beneficial effects:

[0024] 1. A polycarbonate resin particle production device and a manufacturing method thereof. The present invention can monitor and adjust key parameters in the screening process in real time through the coordinated work of various modules of the intelligent device, thereby effectively improving the screening efficiency.

[0025] 2. A polycarbonate resin particle production device and a manufacturing method thereof, based on precise calculation formulas and algorithm models, achieve precise control of the screening process, making the screening efficiency approach the maximum value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a polycarbonate resin particle production device proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of a polycarbonate resin particle production device proposed in the present invention;

[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0029] Figure 4 This is a schematic diagram of a polycarbonate resin particle production device proposed by the present invention;

[0030] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure at point B;

[0031] Figure 6 This is a schematic diagram of the sieve plate structure of a polycarbonate resin particle production device proposed in the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of a feed hopper of a polycarbonate resin pellet production device proposed in the present invention.

[0033] In the figure: 1. Box body; 2. Feed hopper; 3. Discharge pipe; 4. Sieve plate; 5. Image recognition sensor; 6. Particle size analyzer; 7. First fixed plate; 8. Vibration frequency sensor; 9. Vibration amplitude sensor; 10. Central processing module; 11. Second fixed plate; 12. Drive motor; 13. Shaft; 14. Eccentric wheel; 15. Spring; 16. Vibration motor; 17. First motor; 18. Shaft column; 19. Sealing plate; 20. Electric push rod; 21. Sealing plate; 22. Feed speed sensor. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] Reference Figure 1-Figure 7 A polycarbonate resin pellet production device includes a box body 1, a feed hopper 2 is provided on the top of the box body 1, a discharge pipe 3 is provided at the bottom of the box body 1, a sieve plate 4 is provided inside the box body 1, a plurality of evenly distributed springs 15 are fixed at both ends of the sieve plate 4, and the other ends of the springs 15 are fixed to the corresponding inner walls of the box body 1, a vibration detection module and a vibration control module are provided on the sieve plate 4, a flow regulating valve and a feed speed sensor 22 are provided in the feed hopper 2, a screening detection module is further provided in the box body 1, and a central processing module 10 is fixed to one side outer wall of the box body 1;

[0037] The feed rate sensor 22 is used to monitor the feed rate in real time and transmit the data to the central processing module 10. The central processing module 10 adjusts the feed rate by manipulating the flow control valve according to the preset screening efficiency model and the real-time screening data.

[0038] The vibration detection module is used to monitor the vibration frequency and amplitude of the sieve plate 4 and feed the data back to the central processing module 10. The central processing module 10 adjusts the parameters of the vibration control module driver according to the algorithm, thereby changing the vibration frequency and amplitude of the sieve plate 4;

[0039] The screening detection module is used to obtain information such as the distribution density and accumulation of particles above the sieve plate 4, and to detect the particle size of the sieved resin particles, and transmit the particle size data to the central processing module 10;

[0040] The central processing module 10 receives data from various monitoring systems, analyzes and processes them according to preset calculation formulas and algorithm models, and sends control instructions to various modules to achieve intelligent control of the entire screening process.

[0041] It should be noted that the resin particles are poured into the feed hopper 2, and the resin particles are screened on the sieve plate 4. The feed speed sensor 22 monitors the feed speed in real time and transmits the data to the central processing module 10. The central processing module 10 adjusts the feed speed by manipulating the flow control valve according to the preset screening efficiency model and real-time screening data. The vibration detection module monitors the vibration frequency and amplitude of the sieve plate 4 and feeds the data back to the central processing module 10. The central processing module 10 adjusts the parameters of the vibration control module driver according to the algorithm. The screening detection module obtains the distribution density, stacking status and other information of the particles above the sieve plate 4, and performs particle size detection on the screened resin particles, and transmits the particle size data to the central processing module 10. The screened resin particles fall from the discharge pipe 3, so that the screening process is always kept in the best state and the screening efficiency is maximized.

[0042] Furthermore, a feed speed sensor 22 is installed at the bottom end of the feed hopper 2;

[0043] It should be noted that, in this way, the feeding speed sensor 22 can be used to monitor the feeding speed of the resin particles.

[0044] Furthermore, the vibration detection module includes a vibration frequency sensor 8 and a vibration amplitude sensor 9. A first fixing plate 7 is fixed to one side of the top of the sieve plate 4. The vibration frequency sensor 8 and the vibration amplitude sensor 9 are respectively fixed to the top of the first fixing plate 7.

[0045] It should be noted that in this way, the vibration frequency and amplitude of the sieve plate 4 can be monitored respectively by the vibration frequency sensor 8 and the vibration amplitude sensor 9, and the data can be fed back to the central processing module 10. The central processing module 10 adjusts the parameters of the vibration control module driver according to the algorithm, thereby changing the vibration frequency and amplitude of the sieve plate 4.

[0046] Furthermore, the screening detection module includes an image recognition sensor 5 and a particle size analyzer 6. The image recognition sensor 5 is located above the sieve plate 4 and fixed on the top inner wall of the box 1. The particle size analyzer 6 is located below the sieve plate 4 and fixed on one side inner wall of the box 1.

[0047] It should be noted that the image recognition sensor 5 captures the distribution image of the resin particles on the sieve plate 4 in real time, and obtains information such as the distribution density and stacking of the particles through an image analysis algorithm. The particle size analyzer 6 performs particle size detection on the sieved resin particles and transmits the particle size data to the central processing module 10. The image recognition sensor 5 sets a specific image acquisition area to cover the effective screening area of the sieve plate 4, and performs high-resolution image acquisition of the morphology and arrangement of the resin particles on the sieve plate 4. It uses image analysis algorithms such as edge detection and feature extraction to identify the particle outlines and relative positional relationships, thereby obtaining information such as distribution density and stacking height. The particle size analyzer 6 collects samples of the resin particles under the sieve through an automatic sampling device, and uses principles such as laser diffraction and screening methods to accurately measure the particle size and distribution range of the particles and generate particle size data.

[0048] Furthermore, the flow regulating valve includes a first motor 17, a shaft column 18 and a sealing disc 19. The first motor 17 is fixed to the top of the box body 1. The shaft column 18 is fixedly connected to the output shaft of the first motor 17 and passes through the feed hopper 2. The sealing disc 19 is fixed to the end of the shaft column 18 and is located in the feed hopper 2.

[0049] It should be noted that after receiving the control signal, the first motor 17 will drive the shaft column 18 and the sealing disk 19 to rotate at a corresponding angle, thereby controlling the feeding of the resin particles.

[0050] Furthermore, the flow regulating valve includes an electric push rod 20 and a sealing plate 21. The electric push rod 20 is fixed to the top of the box body 1. The sealing plate 21 is fixedly connected to the output shaft of the electric push rod 20 and extends into the feed hopper 2.

[0051] It should be noted that after the electric push rod 20 receives the control signal, it will drive the sealing plate 21 to move horizontally accordingly through the output shaft, thereby controlling the feeding of the resin particles.

[0052] Furthermore, the central processing module 10 calculates the screening efficiency by the following formula: :

[0053]

[0054] in, is the feed rate, is the vibration frequency, is the vibration amplitude, is the material particle size distribution, is the residence time of the particles on the sieve plate 4, is the effective opening ratio of the sieve plate 4, is a coefficient determined experimentally, Constant term, effective opening ratio of sieve plate 4 It can be obtained by actually measuring the ratio of the opening area of the sieve plate 4 to the total area of the sieve plate 4;

[0055] Calculated by the following formula:

[0056] ; ;

[0057] in, is the material stacking thickness, is the area of the sieve plate 4, is the cross-sectional area of the material at the feed inlet;

[0058] In this way, the central processing module 10 can adjust the relevant parameters according to this formula to make the screening efficiency approach the maximum value;

[0059] It should be noted that the coefficients k1, k2, k3, k4, k5, and k6 can be determined by the following experimental methods:

[0060] Experimental design: Using the control variable method, design multiple groups of controlled experiments. Fix all influencing factors in the formula except for a single variable (e.g., keep some variables such as feed rate v and vibration frequency f unchanged), change a certain variable (e.g., adjust only the vibration amplitude A), measure the corresponding screening efficiency E, and obtain multiple sets of experimental data including v, f, A, d, t, α, and E.

[0061] Data fitting: Using the multivariate linear regression analysis method, the screening efficiency E is taken as the dependent variable, and v, f, A, d, t, α are taken as independent variables. The experimental data are fitted and calculated to solve the coefficients k1, k2, k3, k4, k5, and k6 corresponding to each variable;

[0062] Verification and optimization: Verify the accuracy of the coefficients by repeating the experiment. If the results deviate greatly, adjust the experimental parameters, re-measure the data, and re-fit and optimize until the coefficients meet the accuracy requirements for screening efficiency calculation.

[0063] Furthermore, the vibration control module includes a drive motor 12, a shaft 13 and an eccentric wheel 14. The drive motor 12 is fixed to the top of the sieve plate 4 through the second fixing plate 11. The shaft 13 is fixedly connected to the output shaft of the drive motor 12. The two eccentric wheels 14 are respectively fixedly sleeved on the shaft 13. The edges of the two eccentric wheels 14 can respectively contact the top of the first fixing plate 7 and the second fixing plate 11.

[0064] It should be noted that the output shaft of the driving motor 12 drives the shaft 13 and the eccentric wheel 14 to rotate, and the eccentric wheel 14 will periodically collide with the first fixed plate 7 and the second fixed plate 11, thereby causing the screen plate 4 to vibrate.

[0065] Furthermore, the vibration control module includes two symmetrically distributed vibration motors 16, one of which is fixed to the top of the first fixing plate 7, and the other is fixed to the top of the sieve plate 4 via the second fixing plate 11;

[0066] It should be noted that after the vibration motor 16 is working, the vibration motor 16 can cause the sieve plate 4 to vibrate.

[0067] The present invention also provides a method for producing polycarbonate resin particles, comprising the following steps:

[0068] S1, pouring resin particles into the feed hopper 2;

[0069] S2, resin particles enter the box 1 from the feed hopper 2 and are screened on the sieve plate 4. The feed speed sensor 22 monitors the feed speed in real time and transmits the data to the central processing module 10. The central processing module 10 adjusts the feed speed by manipulating the flow control valve according to the preset screening efficiency model and real-time screening data. The vibration detection module monitors the vibration frequency and amplitude of the sieve plate 4 and feeds the data back to the central processing module 10. The central processing module 10 adjusts the parameters of the vibration control module driver according to the algorithm. The screening detection module obtains information such as the distribution density and accumulation of particles above the sieve plate 4, and performs particle size detection on the screened resin particles, and transmits the particle size data to the central processing module 10;

[0070] S3, the screened resin particles are discharged from the discharge pipe 3.

[0071] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A polycarbonate resin pellet production device, comprising a housing (1), characterized in that: The box (1) is provided with a feed hopper (2) at the top, a discharge pipe (3) at the bottom, a sieve plate (4) is provided inside the box (1), a plurality of evenly distributed springs (15) are fixed to both ends of the sieve plate (4), the other ends of the springs (15) are fixed to the corresponding inner walls of the box (1), a vibration detection module and a vibration control module are provided on the sieve plate (4), a flow regulating valve and a feed speed sensor (22) are provided in the feed hopper (2), a screening detection module is further provided in the box (1), and a central processing module (10) is fixed to one outer wall of the box (1); The feed speed sensor (22) is used to monitor the feed speed in real time and transmit the data to the central processing module (10). The central processing module (10) adjusts the feed speed by manipulating the flow control valve according to a preset screening efficiency model and the real-time screening data. The vibration detection module is used to monitor the vibration frequency and amplitude of the sieve plate (4) and feed the data back to the central processing module (10). The central processing module (10) adjusts the parameters of the vibration control module driver according to the algorithm, thereby changing the vibration frequency and amplitude of the sieve plate (4); The screening detection module is used to obtain the distribution density and accumulation information of the particles above the screen plate (4), and to detect the particle size of the screened resin particles, and transmit the particle size data to the central processing module (10); The central processing module (10) receives data from various monitoring systems, performs analysis and processing based on preset calculation formulas and algorithm models, and sends control instructions to various modules to achieve intelligent control of the entire screening process.

2. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The feed speed sensor (22) is installed at the bottom end of the feed hopper (2).

3. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The vibration detection module comprises a vibration frequency sensor (8) and a vibration amplitude sensor (9); a first fixed plate (7) is fixed to one side of the top of the sieve plate (4); and the vibration frequency sensor (8) and the vibration amplitude sensor (9) are respectively fixed to the top of the first fixed plate (7).

4. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The screening detection module comprises an image recognition sensor (5) and a particle size analyzer (6), wherein the image recognition sensor (5) is located above the sieve plate (4) and fixed on the top inner wall of the box (1), and the particle size analyzer (6) is located below the sieve plate (4) and fixed on one side inner wall of the box (1).

5. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The flow regulating valve comprises a first motor (17), a shaft column (18) and a sealing disk (19), wherein the first motor (17) is fixed to the top of the box body (1), the shaft column (18) is fixedly connected to the output shaft of the first motor (17) and passes through the feed hopper (2), and the sealing disk (19) is fixed to the end of the shaft column (18) and is located in the feed hopper (2).

6. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The flow regulating valve comprises an electric push rod (20) and a sealing plate (21), wherein the electric push rod (20) is fixed to the top of the box body (1), and the sealing plate (21) is fixedly connected to the output shaft of the electric push rod (20) and extends into the feed hopper (2).

7. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The central processing module (10) calculates the screening efficiency by the following formula : in, is the feed rate, is the vibration frequency, is the vibration amplitude, is the material particle size distribution, is the residence time of the particles on the sieve plate (4), is the effective opening ratio of the sieve plate (4), is a coefficient determined experimentally, Constant term, effective opening ratio of sieve plate (4) It can be obtained by actually measuring the ratio of the opening area of the sieve plate (4) to the total area of the sieve plate (4); Calculated by the following formula: ; ; in, is the material stacking thickness, is the area of the sieve plate (4), is the cross-sectional area of the material at the feed inlet.

8. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The vibration control module comprises a drive motor (12), a shaft (13) and an eccentric wheel (14), wherein the drive motor (12) is fixed to the top of the screen plate (4) via a second fixed plate (11), the shaft (13) is fixedly connected to the output shaft of the drive motor (12), and the two eccentric wheels (14) are respectively fixedly sleeved on the shaft (13), and the edges of the two eccentric wheels (14) are respectively capable of contacting the top of the first fixed plate (7) and the top of the second fixed plate (11).

9. The polycarbonate resin pellet production equipment according to claim 1, characterized in that: The vibration control module includes two symmetrically distributed vibration motors (16), one of which is fixed to the top of the first fixed plate (7), and the other is fixed to the top of the screen plate (4) via the second fixed plate (11).

10. A method for producing polycarbonate resin particles, characterized in that: The steps include: S1, pouring resin particles into the feed hopper (2); S2, resin particles enter the box (1) from the feed hopper (2) and are screened on the screen plate (4). The feed speed sensor (22) monitors the feed speed in real time and transmits the data to the central processing module (10). The central processing module (10) adjusts the feed speed by manipulating the flow control valve according to the preset screening efficiency model and the real-time screening data. The vibration detection module monitors the vibration frequency and amplitude of the screen plate (4) and feeds the data back to the central processing module (10). The central processing module (10) adjusts the parameters of the vibration control module driver according to the algorithm. The screening detection module obtains the distribution density and accumulation information of the particles above the screen plate (4) and performs particle size detection on the screened resin particles, and transmits the particle size data to the central processing module (10); S3, the screened resin particles are discharged from the discharge pipe (3).

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