A single-motor multi-shaft gearbox transmission structure for a fine particle material screening machine

Abstract

This invention discloses a single-motor multi-shaft gearbox transmission structure for a fine particulate material screening machine, relating to the field of material screening technology. The invention incorporates a drying mechanism that analyzes the moisture content data of the particulate material to determine whether secondary drying is necessary and the desired drying time. A rotating wheel drives a sliding block to reciprocate up and down via a connecting rod, causing the secondary drying plate to slide up and down within a limiting groove, shaking the material. A drive fan and heating element are included; by activating multiple sets of these elements, the shaken material undergoes secondary drying. The drying time is set according to the parameters, allowing for secondary screening of the particulate material based on the obtained moisture data. This improves intelligence and avoids the problem of material sticking to the connecting rod on the screen surface when the fine particulate material has a high moisture content or is sticky, leading to a decrease in screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of material screening technology, specifically to a single-motor multi-axis gearbox transmission structure for a fine particle material screening machine. Background Technology

[0002] Screening is a crucial component of mineral processing, widely used in coal, metallurgy, chemical, and building materials industries. Dry screening of moist, fine-particle materials, in particular, remains a challenging area of ​​research both domestically and internationally, and is a critical issue urgently needing resolution in screening operations. In my country's coal screening operations, effective screening of moist, fine-particle materials smaller than 8mm is still not feasible, and deep screening of coal is extremely difficult. Due to the increased mechanization of modern coal mining technology, the amount of coal dust has increased, and environmental requirements for dust suppression through water spraying have led to a rapid increase in the moisture content of raw coal underground. These factors combined make it very difficult to screen particles smaller than 8mm using conventional screening methods.

[0003] The following problems still exist when using a screening machine to screen fine particulate materials:

[0004] 1. When screening through the screen holes and screen surface, fine particles are prone to clogging on the screen surface, especially when the fine particles have a high moisture content or are sticky. When screening through the screen surface, the material will stick to the connecting rod on the screen surface, resulting in a decrease in screening effect and an increase in cleaning and maintenance workload.

[0005] 2. With fixed installation, static screens with holes tend to accumulate particles on the surface when screening fine materials, resulting in lower screening efficiency and speed. Furthermore, using multi-motor, multi-shaft drives increases costs and leads to more potential failure points.

[0006] To address this, a single-motor multi-shaft gearbox transmission structure for fine particle material screening machines has been developed. Summary of the Invention

[0007] The purpose of this invention is to solve the problem that when fine particulate materials have a high moisture content or are sticky, the material will stick to the connecting rod on the screen surface during screening, resulting in a decrease in screening effect. The invention proposes a single motor multi-shaft gearbox transmission structure for fine particulate material screening machines.

[0008] The objective of this invention can be achieved through the following technical solution: An assembly frame is included, with a connecting plate fixedly connected to the rear side of the top of the assembly frame. A drying drum is connected to the connecting plate via a drive mechanism. An extension plate is fixedly connected to the front side of the top of the assembly frame, and a reciprocating motor is mounted on the extension plate. A rotating rod is rotatably connected to the front side wall of the connecting plate. A detection chamber is connected between the drive end of the reciprocating motor and the other end of the rotating rod. A drying mechanism is provided inside the detection chamber. The processing mechanism includes a detection plate, which is installed inside the detection chamber. A partition plate is fixedly connected to the bottom of the detection plate, and a sliding connection is made to the left side wall of the partition plate. The secondary drying plate has a limiting groove on its left side wall, and the secondary drying plate is slidably connected to the left side wall of the dividing plate through the limiting groove. An installation box is installed on the front side wall of the detection chamber, and multiple sets of drive fans and multiple sets of heating tubes are installed inside the installation box. A transmission rod is rotatably connected to the rear side wall of the detection chamber, and a rotating wheel is fixedly connected to the rear end of the transmission rod. A sliding groove is opened on the rear side wall of the detection chamber, and a sliding block is fixedly connected to the rear side wall of the secondary drying plate, with the other side of the sliding block passing through the sliding groove. A connecting rod is rotatably connected between the outer surface of the rotating wheel and the rear end of the sliding block. Screen holes are opened on both the front and rear side walls of the detection chamber.

[0009] In a preferred embodiment of the present invention, the driving mechanism includes an L-shaped connecting frame, which is fixedly connected to the bottom of the horizontal end of the connecting plate. A first motor is installed inside the vertical end of the connecting plate, and a drive rod is fixedly connected to the drive end of the first motor. A first lead screw is rotatably connected to the front side wall of the top extension end of the connecting plate. A transmission chain is driven between the outer surface of the drive rod and the first lead screw. An adjusting block is threadedly connected to the outer surface of the first lead screw. An installation rod is fixedly connected to the upper end of the adjusting block, and an electric heating ring is installed at the other end of the installation rod. A fixing rod is fixedly connected to the rear side of the inner circumference of the drying drum. A stirring shaft is installed on the fixing rod. A transmission gear is fixedly connected to both the other end of the drive rod and the outer surface of the stirring shaft, and the two sets of transmission gears mesh with each other. Two sets of stirring blades are fixedly connected to the outer surface of the stirring shaft, and two sets of stirring plates are fixedly connected to the outer surface of the stirring shaft. A winding wheel is installed on the left side wall of the connecting plate, and a conductive wire is wound on the winding wheel. One end of the conductive wire is connected to the electric heating ring.

[0010] In a preferred embodiment of the present invention, the detection chamber is provided with a cleaning mechanism, which includes a screen that is slidably connected inside the detection chamber. Rotating shafts are rotatably connected to both sides of the front inner wall of the detection chamber, and the rear ends of the two sets of rotating shafts penetrate the rear side wall of the detection chamber. Two sets of second transmission belts are connected to the transmission rod and the two sets of rotating shafts. Multiple sets of eccentric wheels are fixedly connected to the outer surfaces of the two sets of rotating shafts. A limit slider is fixedly connected to the right side wall of the screen, and a groove that cooperates with the limit slider is provided on the right inner wall of the detection chamber. An electric telescopic rod is installed inside the groove. An insertion hole is provided on the limit slider, and a plug matching the insertion hole is installed on the extension end of the electric telescopic rod. A discharge port and a discharge port are respectively provided on the bottom and left side wall of the detection chamber.

[0011] In a preferred embodiment of the present invention, a detection mechanism is provided inside the detection box. The detection mechanism includes a second lead screw, which is rotatably connected to the rear side wall of the detection box. A second motor is installed on the front side wall of the detection box, and the other end of the second lead screw is installed on the drive end of the second motor. A moving block is threadedly connected to the outer surface of the second lead screw. A scraper is connected to the lower end of the moving block through an electric push rod. A limit rod is fixedly connected between the front and rear inner walls of the detection box, and the limit rod passes through the moving block. A first transmission belt is drivingly connected between the rear end of the second lead screw and the outer surface of the transmission rod.

[0012] In a preferred embodiment of the present invention, a screening mechanism is provided on the assembly frame. The screening mechanism includes a drive motor, which is installed on the rear side of the assembly frame. A multi-axis gearbox is installed on the rear side of the top of the assembly frame, and the drive end of the drive motor is connected to the multi-axis gearbox. Multiple sets of screening wheels are installed on the top of the assembly frame. Screen shafts are provided on both the left and right sides of the multiple sets of screening wheels, and the screen shafts on the left side of the multiple sets of screening wheels are connected to the rotating end of the multi-axis gearbox. A bidirectional spiral rod is provided inside the multiple sets of screening wheels.

[0013] In a preferred embodiment of the present invention, a plug rod is fixedly connected to the right end of the winding wheel, and the plug rod is rotatably connected to the left side wall of the connecting plate. The right end of the plug rod and the outer surface of the first motor drive end are both fixedly connected to a first gear, and the two sets of first gears mesh with each other. The outer surfaces of the two sets of stirring blades abut against the inner circumference of the drying barrel.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention features a drying mechanism that analyzes the moisture content of granular materials to determine whether secondary drying is necessary and the required drying time. A rotating wheel, via a connecting rod, drives a sliding block in a reciprocating motion, causing a secondary drying plate to slide up and down within a limiting groove, shaking the material. Multiple sets of driving fans and heating elements are activated to perform secondary drying on the shaken material. The drying time is set according to the parameters, and the granular materials can be secondary-screened based on the obtained moisture data. This improves automation and avoids the problem of material sticking to the connecting rod on the screen surface when fine granular materials have high moisture content or are sticky, leading to reduced screening efficiency.

[0016] This invention utilizes a detection mechanism where a second lead screw rotates, causing a moving block to reciprocate along the lead screw. This moving block drives a scraper to evenly distribute the material falling onto the detection plate, preventing it from accumulating in one place and affecting the accuracy of the humidity sensor. During this process, the height of the scraper is adjusted via an electric actuator based on the height of the material pile. The height of each point on the material pile is analyzed, and the height difference is calculated by comparing the highest and lowest heights. A threshold of 3 cm is set between these height differences to ensure the accuracy of the humidity data analysis.

[0017] This invention features a screening mechanism that uses a drive motor and a multi-axis gearbox for transmission. Compared to the chain drive of traditional screening machines, gear transmission offers advantages such as high transmission torque, wide power adaptability, and long service life. Furthermore, the single-motor multi-axis transmission avoids the drawbacks of multiple motor multi-axis transmissions, which often result in numerous potential failure points. By incorporating bidirectional spiral rods within multiple screening wheels, the rotating screen holes increase the effective screening area compared to the stationary screen surface. The bidirectional spiral design effectively solves the problem of material accumulation during screening, improving the screen's material handling capacity and screening efficiency. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a structural diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 The left view;

[0021] Figure 3 For the present invention Figure 2 The first partial image;

[0022] Figure 4 For the present invention Figure 2 The second partial view;

[0023] Figure 5 This is a partial internal structural diagram of the detection chamber in this invention;

[0024] Figure 6 This is a partial internal structural diagram of the detection chamber in this invention;

[0025] Figure 7 This is a structural diagram of the screening wheel in this invention.

[0026] 1. Assembly frame; 111. Drive motor; 112. Multi-axis gearbox; 113. Screening wheel; 114. Screen shaft; 115. Bidirectional screw; 2. Connecting plate; 211. L-shaped connecting frame; 212. Drive rod; 213. First lead screw; 214. Transmission chain; 215. Adjusting block; 216. Mounting rod; 217. Heating ring; 218. Fixing rod; 219. Stirring shaft; 220. Transmission gear; 221. Stirring blade; 222. Stirring plate; 223. Winding wheel; 224. Conductive wire; 3. Drying drum; 4. Extension plate; 5. Reciprocating motor; 6. Rotating rod; 7. Detection box. 711. Second lead screw; 712. Moving block; 713. Scraper; 714. Limiting rod; 715. Detection plate; 716. Separator plate; 717. Secondary drying plate; 718. Mounting box; 719. Drive fan; 720. Heating tube; 721. Transmission rod; 722. First transmission belt; 723. Rotary wheel; 724. Sliding block; 725. Connecting rod; 726. Slide groove; 727. Limiting groove; 728. Rotating shaft; 729. Second transmission belt; 730. Screen; 731. Limiting slider; 732. Eccentric wheel; 733. Screen hole; 734. Impurity discharge port; 735. Discharge port. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-7As shown, a single-motor multi-shaft gearbox transmission structure for a fine particle material screening machine includes an assembly frame 1. A connecting plate 2 is fixedly connected to the rear side of the top of the assembly frame 1. A drying barrel 3 is connected to the connecting plate 2 via a drive mechanism. An extension plate 4 is fixedly connected to the front side of the top of the assembly frame 1. A reciprocating motor 5 is mounted on the extension plate 4. A rotating rod 6 is rotatably connected to the front wall of the connecting plate 2. A detection box 7 is connected between the drive end of the reciprocating motor 5 and the other end of the rotating rod 6. A drying mechanism is provided inside the detection box 7. The drying mechanism includes a detection plate 715, which is installed inside the detection box 7. A partition plate 716 is fixedly connected to the bottom of the detection plate 715. A secondary drying plate 717 is slidably connected to the left side wall of the partition plate 716. A limiting groove 727 is provided on the wall, and the secondary drying plate 717 is slidably connected to the left side wall of the partition plate 716 through the limiting groove 727. An installation box 718 is installed on the front side wall of the detection chamber 7, and multiple sets of drive fans 719 and multiple sets of heating tubes 720 are installed inside the installation box 718. A transmission rod 721 is rotatably connected to the rear side wall of the detection chamber 7, and a rotating wheel 723 is fixedly connected to the rear end of the transmission rod 721. A sliding groove 726 is provided on the rear side wall of the detection chamber 7, and a sliding block 724 is fixedly connected to the rear side wall of the secondary drying plate 717. The other side of the sliding block 724 passes through the sliding groove 726. A connecting rod 725 is rotatably connected between the outer surface of the rotating wheel 723 and the rear end of the sliding block 724. Screen holes 733 are provided on both the front and rear side walls of the detection chamber 7.

[0029] It should be noted that after the granular material to be screened is pre-dried in the drying drum 3, the bottom valve is opened to allow the granular material to fall onto the surface of the detection plate 715 inside the detection chamber 7. Multiple humidity sensors installed inside the detection plate 715 collect humidity data at different locations on the granular material and send it to the backend for analysis. The obtained humidity data are labeled as X1, X2, X3...Xi, where i is the total number of humidity data. The obtained humidity data are summed and averaged to obtain the average humidity value. Humidity data higher than the average humidity value are extracted and labeled as high humidity values. The difference between the highest and lowest humidity values ​​is calculated and labeled as the humidity difference value. A comprehensive analysis of the high humidity values, the number of high humidity values, and the humidity difference value yields the total humidity value. Specifically:

[0030] Substituting into the formula SD=SA×h1+SB×h2+SC×h3, the total humidity value SD is calculated, where h1, h2, and h3 are the influence weighting factors of high humidity value SA, number of high humidity points SB, and humidity difference SC, respectively. The obtained total humidity value and SD are compared with a preset threshold. When the total humidity value SD is less than the preset threshold, the valve on the right side of the detection plate 715 is opened, and the reciprocating motor 5 controls the detection chamber 7 to rotate clockwise, adjusting the angle of the detection chamber 7 so that the particulate material falls directly onto the screen 730 through the valve on the right. When the total humidity value SD is greater than the preset threshold, the valve on the left side of the detection plate 715 is opened, and the reciprocating motor 5 controls the detection chamber 7 to rotate counterclockwise, so that the particulate material falls onto the secondary drying plate 717 through the valve on the left. The difference between the total humidity value SD and the threshold is calculated, and the difference is matched with a preset threshold. Within multiple value ranges, each value range corresponds to a drying time. The batch of granular material is then subjected to secondary drying based on the obtained drying time. When the granular material falls onto the secondary drying plate 717, the rotating wheel 723 rotates, causing the sliding block 724 to move up and down via the connecting rod 725. This causes the secondary drying plate 717 to slide up and down within the limiting groove 727, shaking the material. Simultaneously, multiple sets of drive fans 719 and multiple sets of heating tubes 720 are activated to perform secondary drying on the shaken material. The drying time is set accordingly. Subsequently, the dried material falls through the secondary drying plate 717 onto the screen 730 for impurity removal and then is sieved by the screening mechanism. This avoids the situation where, when the fine granular material has a high moisture content or is sticky, the material adheres to the connecting rod on the screen surface during screening, resulting in a decrease in screening efficiency.

[0031] It should be noted that during the up-and-down shaking process of the granular material, multiple sets of drive fans 719 can blow away some of the fine impurities contained in the granular material and screen them out through the set sieve holes 733, thereby improving efficiency and material quality.

[0032] Furthermore, the drive mechanism includes an L-shaped connecting frame 211, which is fixedly connected to the bottom of the horizontal end of the connecting plate 2. A first motor is installed inside the vertical end of the connecting plate 2, and the drive end of the first motor is fixedly connected to a drive rod 212. A first lead screw 213 is rotatably connected to the front side wall of the top extension end of the connecting plate 2. A transmission chain 214 is connected between the outer surfaces of the drive rod 212 and the first lead screw 213. An adjusting block 215 is threadedly connected to the outer surface of the first lead screw 213. An installation rod 216 is fixedly connected to the upper end of the adjusting block 215, and an electric motor is installed at the other end of the installation rod 216. A fixed rod 218 is fixedly connected to the rear side of the inner circumference of the heating ring 217 and the drying drum 3. A stirring shaft 219 is installed on the fixed rod 218. The other end of the driving rod 212 is fixedly connected to the outer surface of the stirring shaft 219 with a transmission gear 220, and the two sets of transmission gears 220 mesh with each other. Two sets of stirring blades 221 are fixedly connected to the outer surface of the stirring shaft 219. Two sets of stirring plates 222 are fixedly connected to the outer surface of the stirring shaft 219. A winding wheel 223 is installed on the left side wall of the connecting plate 2, and a conductive wire 224 is wound on the winding wheel 223. One end of the conductive wire 224 is connected to the heating ring 217.

[0033] It should be noted that the granular material first enters the drying drum 3, and then the first motor is started to rotate forward, which causes the drive rod 212 to rotate. Through the transmission chain 214, the first lead screw 213 is driven to rotate. During the rotation of the first lead screw 213, the adjusting block 215 begins to move forward on the outer surface of the first lead screw 213. When it moves to the front end, the heating ring 217 moves to the top of the drying drum 3 and starts to heat. At the same time, the drive rod 212 rotates, which drives the stirring shaft 219 to rotate through the two sets of transmission gears 220. This causes the two sets of stirring blades 221 and the two sets of stirring plates 222 to rotate and stir the granular material, thereby achieving the pre-treatment and drying of the granular material.

[0034] Furthermore, the interior of the detection chamber 7 is equipped with a cleaning mechanism, which includes a screen 730. The screen 730 is slidably connected inside the detection chamber 7. Rotating shafts 728 are rotatably connected to the left and right sides of the front inner wall of the detection chamber 7, and the rear ends of the two sets of rotating shafts 728 penetrate through the rear side wall of the detection chamber 7. Two sets of second transmission belts 729 are connected between the transmission rod 721 and the two sets of rotating shafts 728. Multiple sets of eccentric wheels 732 are fixedly connected to the outer surface of the two sets of rotating shafts 728. A limit slider 731 is fixedly connected to the right side wall of the screen 730, and a groove that matches the limit slider 731 is opened on the right inner wall of the detection chamber 7. An electric telescopic rod is installed inside the groove. An insertion hole is opened on the limit slider 731, and an insertion block that matches the insertion hole is installed on the extension end of the electric telescopic rod. A discharge port 734 and a discharge port 735 are respectively provided on the bottom and left side wall of the detection chamber 7.

[0035] It should be noted that when the granular material falls onto the screen 730, the two sets of second transmission belts 729 can drive the transmission rod 721 to rotate while simultaneously driving the two sets of rotating shafts 728 to rotate. This causes the multiple sets of eccentric wheels 732 to rotate and reciprocate, squeezing the screen 730, thus causing the screen 730 to move up and down. This prevents material from accumulating on the top of the screen 730 and causing blockage. Subsequently, the fine impurities after screening are discharged through the discharge port 734 after being screened through the screen 730. After screening, the rotation of the multiple sets of eccentric wheels 732 is stopped. Then, after the screen 730 is stable, the insert block is inserted into the insertion hole in the limit slider 731, and the angle of the detection box 7 is adjusted to discharge the material from the outlet 735. This prevents the screen 730 from slipping after the angle is adjusted, which would affect the discharge and ensure the stability of the discharge.

[0036] Furthermore, the detection chamber 7 is equipped with a detection mechanism, which includes a second lead screw 711. The second lead screw 711 is rotatably connected to the rear side wall of the detection chamber 7. A second motor is installed on the front side wall of the detection chamber 7, and the other end of the second lead screw 711 is installed on the drive end of the second motor. A moving block 712 is threadedly connected to the outer surface of the second lead screw 711. The lower end of the moving block 712 is connected to a scraper 713 through an electric push rod. A limit rod 714 is fixedly connected between the front and rear inner walls of the detection chamber 7, and the limit rod 714 passes through the moving block 712. A first transmission belt 722 is connected between the rear end of the second lead screw 711 and the outer surface of the transmission rod 721.

[0037] It should be noted that starting the second motor causes the second lead screw 711 to rotate, which in turn causes the moving block 712 to move back and forth on the second lead screw 711. The moving block 712 drives the scraper 713 to evenly distribute the material falling on the detection plate 715, preventing it from piling up in one place and affecting the accuracy of the humidity sensor. During this process, the height of the scraper 713 is adjusted by the electric actuator according to the height of the material pile. The height of each point of the material pile is analyzed, and the height difference is calculated by the height difference between the highest and lowest material pile heights. The threshold value between the height differences is set to 3 cm to ensure the accuracy of the humidity data analysis.

[0038] Furthermore, a screening mechanism is provided on the assembly frame 1. The screening mechanism includes a drive motor 111, which is installed on the rear side of the assembly frame 1. A multi-axis gearbox 112 is installed on the rear side of the top of the assembly frame 1, and the drive end of the drive motor 111 is connected to the multi-axis gearbox 112. Multiple sets of screening wheels 113 are installed on the top of the assembly frame 1. Screen shafts 114 are provided on both the left and right sides of the multiple sets of screening wheels 113. The screen shafts 114 on the left side of the multiple sets of screening wheels 113 are all connected to the rotating end of the multi-axis gearbox 112. A bidirectional spiral rod 115 is provided inside the multiple sets of screening wheels 113.

[0039] It should be noted that the assembly frame 1 adopts an inclined arrangement, which is conducive to the granular material sliding down the screen surface and increasing the feed processing capacity.

[0040] It should be noted that after the granular material is discharged through the discharge port 735, it falls onto the top of the assembly frame 1. The drive motor 111 is then started, causing the drive motor 111 to drive multiple sets of bidirectional spiral rods 115 to rotate through the multi-shaft gearbox 112, thus screening the granular material. Compared with the chain drive method of traditional screening machines, the gear drive method using the drive motor 111 and the multi-shaft gearbox 112 has the advantages of large transmission torque, wide power transmission range, and long service life. At the same time, the single motor multi-shaft drive avoids the disadvantage of multiple failure points in the multi-motor multi-shaft drive method. By setting bidirectional spiral rods 115 in the multiple sets of screening wheels 113, the rotating screen holes increase the effective screening area compared with the static screen hole screen surface. The bidirectional spiral design effectively solves the problem of material accumulation during screening, improving the screen surface's material processing capacity and screening efficiency.

[0041] Furthermore, a rod is fixedly connected to the right end of the winding wheel 223, and the rod is rotatably connected to the left side wall of the connecting plate 2. The right end of the rod and the outer surface of the first motor drive end are both fixedly connected to the first gear, and the two sets of first gears mesh with each other. The outer surfaces of the two sets of stirring blades 221 abut against the inner circumference of the drying barrel 3.

[0042] It should be noted that by setting the first gear, when the first motor rotates forward and the heating ring 217 moves forward, the winding wheel 223 is driven to rotate clockwise to unload the wire onto the drive rod 212. When the first motor rotates in reverse, the heating ring 217 retracts backward and the winding wheel 223 rotates counterclockwise to retract the wire, thus preventing the transmission chain 214 from being dragged and coming into contact with the heating surface of the heating ring 217, which would cause damage. By having the two sets of stirring blades 221 abut against the inner wall of the drying barrel 3, the particulate material attached to the inner wall can be scraped off.

[0043] When using this invention:

[0044] The granular material first enters the drying drum 3, then the first motor is started and rotates forward, causing the drive rod 212 to rotate. This, in turn, drives the first lead screw 213 to rotate via the transmission chain 214. During the rotation of the lead screw 213, the adjusting block 215 moves forward on the outer surface of the lead screw 213. When it reaches the frontmost position, the heating ring 217 moves directly above the drying drum 3, activating heating. Simultaneously, the drive rod 212 rotates, driving the stirring shaft 219 to rotate via two sets of transmission gears 220. This causes the two sets of stirring blades 221 and two sets of stirring plates 222 to rotate, stirring the granular material for pre-drying. Then, the valve at the bottom of the drying drum 3 is opened, allowing the granular material to fall onto the detection plate 715 inside the detection chamber 7. The second motor is started, causing the second lead screw 711 to rotate. This causes the moving block 712 to move back and forth on the second lead screw 711. The moving block 712 drives the scraper 713 to evenly distribute the material falling on the detection plate 715. During this process, the height of the scraper 713 is adjusted according to the height of the material pile using an electric actuator. The height of each point in the material pile is analyzed, and the height difference is calculated by the height difference between the highest and lowest material pile heights. A threshold value of 3 cm is set for the height difference. Subsequently, multiple humidity sensors installed inside the detection plate 715 collect the humidity at different locations of the granular material and send it to the backend for analysis to obtain the total humidity value SD. The obtained total humidity value and SD are compared with the preset threshold value. The process involves comparing the total humidity value (SD) with the preset threshold. When the total humidity value (SD) is less than the preset threshold, the valve on the right side of the detection plate 715 is opened, and the detection chamber 7 is rotated clockwise by the reciprocating motor 5. This adjusts the angle of the detection chamber 7, allowing the granular material to fall directly onto the screen 730 through the valve on the right. When the total humidity value (SD) is greater than the preset threshold, the valve on the left side of the detection plate 715 is opened, and the detection chamber 7 is rotated counterclockwise by the reciprocating motor 5. This allows the granular material to fall onto the secondary drying plate 717 through the valve on the left. The difference between the total humidity value (SD) and the threshold is calculated. This difference is then matched to multiple preset value ranges, each corresponding to a drying time. The batch of granular material is then subjected to secondary drying using the obtained drying time. After the material falls onto the secondary drying plate 717, the rotation of the rotating wheel 723 causes the sliding block 724 to reciprocate up and down via the connecting rod 725. This causes the secondary drying plate 717 to slide up and down within the limiting groove 727, shaking the material. Simultaneously, multiple sets of drive fans 719 and multiple sets of heating tubes 720 are activated to perform secondary drying on the shaken material. The drying time is set according to the parameters. After drying, the material falls onto the screen 730 through the opening of the secondary drying plate 717. Through two sets of second transmission belts 729, the rotation of the transmission rod 721 drives two sets of rotating shafts 728 to rotate, causing multiple sets of eccentric wheels 732 to reciprocate and press against the screen 730, thus causing the screen 730 to move up and down.To prevent material from accumulating on top of the screen 730 and causing blockage, fine impurities are screened through the screen 730 and then discharged through the discharge port 734. After screening, the granular material is first stopped from rotating the multiple sets of eccentric wheels 732, the second motor is turned off, and then, after the screen 730 is stable, the insert block is inserted into the hole in the limit slider 731, and the angle of the detection box 7 is adjusted to discharge the material from the discharge port 735. The granular material, after being discharged through the discharge port 735, falls onto the top of the assembly frame 1. The drive motor 111 is then started, causing it to drive multiple sets of bidirectional spiral rods 115 to rotate through the multi-shaft gearbox 112, thus screening the granular material.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A single motor multi-shaft gearbox transmission structure for fine particle material screening machines, comprising an assembly frame (1), the rear side of the top of the assembly frame (1) is fixedly connected with a connecting plate (2), the connecting plate (2) is connected with a drying barrel (3) through a driving mechanism, the front side of the top of the assembly frame (1) is fixedly connected with an extension plate (4), the extension plate (4) is installed with a reciprocating motor (5), the front side wall of the connecting plate (2) is rotatably connected with a rotating rod (6), the driving end of the reciprocating motor (5) and one end of the rotating rod (6) are connected with a detection box (7), the inside of the detection box (7) is provided with a drying mechanism, characterized in that, The drying mechanism includes a detection plate (715) installed inside a detection box (7), the bottom of the detection plate (715) is fixedly connected with a partition plate (716), the left side wall of the partition plate (716) is slidably connected with a secondary drying plate (717), the left side wall of the partition plate (716) is provided with a limiting groove (727), and the secondary drying plate (717) is slidably connected to the left side wall of the partition plate (716) through the limiting groove (727), the front side wall of the detection box (7) is provided with a mounting box (718), and the inside of the mounting box (718) is provided with a plurality of groups of driving fans (719) and a plurality of groups of heating pipes (720), the rear side wall of the detection box (7) is rotatably connected with a transmission rod (721), the rear end of the transmission rod (721) is fixedly connected with a rotating wheel (723), the rear side wall of the detection box (7) is provided with a sliding groove (726), the rear side wall of the secondary drying plate (717) is fixedly connected with a sliding block (724), one side of the sliding block (724) penetrates through the sliding groove (726), and the outer surface of the rotating wheel (723) and the rear end of the sliding block (724) are rotatably connected with a connecting rod (725), and the front and rear side walls of the detection box (7) are both provided with a sieve hole (733); The driving mechanism includes an L-shaped connecting frame (211) fixedly connected to the bottom of the horizontal end of the connecting plate (2), a first motor is installed in the vertical end of the connecting plate (2), and the driving end of the first motor is fixedly connected with a driving rod (212), a first screw rod (213) is rotatably connected to the front side wall of the extending end of the top of the connecting plate (2), a transmission chain (214) is in transmission connection between the outer surfaces of the driving rod (212) and the first screw rod (213), an adjusting block (215) is in threaded connection with the outer surface of the first screw rod (213), an installation rod (216) is fixedly connected to the upper end of the adjusting block (215), an electric heating ring (217) is installed on one end of the installation rod (216), a fixing rod (218) is fixedly connected to the rear side of the circumferential inner wall of the drying barrel (3), a stirring shaft (219) is installed on the fixing rod (218), a transmission gear (220) is fixedly connected to the outer surfaces of the other end of the driving rod (212) and the stirring shaft (219), the two groups of transmission gears (220) are in meshing connection with each other, two groups of stirring blades (221) are fixedly connected to the outer surface of the stirring shaft (219), two groups of stirring plates (222) are fixedly connected to the outer surface of the stirring shaft (219), a winding wheel (223) is installed on the left side wall of the connecting plate (2), and a conductive wire (224) is wound on the winding wheel (223), one end of the conductive wire (224) is connected with the electric heating ring (217). The inside of the detection box (7) is provided with a detection mechanism, the detection mechanism comprises a second lead screw (711), the second lead screw (711) is rotatably connected in the rear side wall of the detection box (7), a second motor is installed on the front side wall of the detection box (7), and one end of the second lead screw (711) is installed on the driving end of the second motor, the outer surface of the second lead screw (711) is threadedly connected with a moving block (712), the lower end of the moving block (712) is connected with a scraper (713) through an electric push rod, the front and rear inner walls of the detection box (7) are fixedly connected with a limiting rod (714), and the limiting rod (714) penetrates the moving block (712), and a first transmission belt (722) is in transmission connection between the rear end of the second lead screw (711) and the outer surface of the transmission rod (721); The assembly frame (1) is provided with a screening mechanism, the screening mechanism comprises a driving motor (111), the driving motor (111) is installed on the rear side of the assembly frame (1), a multi-shaft gear box (112) is installed on the rear side of the top of the assembly frame (1), and the driving end of the driving motor (111) is connected with the multi-shaft gear box (112), a plurality of screening wheels (113) are installed on the top of the assembly frame (1), a screen shaft (114) is arranged on the left and right sides of each of the plurality of screening wheels (113), and the screen shaft (114) on the left side of each of the plurality of screening wheels (113) is connected with the rotating end of the multi-shaft gear box (112), and a bidirectional spiral rod (115) is arranged in each of the plurality of screening wheels (113).

2. A single motor multi-shaft gearbox transmission structure for a fine particle material screening machine according to claim 1, characterized in that, The inside of the detection box (7) is provided with a detection mechanism, the detection mechanism comprises a second lead screw (711), the second lead screw (711) is rotatably connected in the rear side wall of the detection box (7), a second motor is installed on the front side wall of the detection box (7), and one end of the second lead screw (711) is installed on the driving end of the second motor, the outer surface of the second lead screw (711) is threadedly connected with a moving block (712), the lower end of the moving block (712) is connected with a scraper (713) through an electric push rod, the front and rear inner walls of the detection box (7) are fixedly connected with a limiting rod (714), and the limiting rod (714) penetrates the moving block (712), and a first transmission belt (722) is in transmission connection between the rear end of the second lead screw (711) and the outer surface of the transmission rod (721); 3. A single motor multi-shaft gearbox drive structure for a fine particle material screening machine according to claim 1, characterized in that, The right end of the winding wheel (223) is fixedly connected with a plug rod, and the plug rod is rotatably connected in the left side wall of the connecting plate (2). The right end of the plug rod and the outer surface of the driving end of the first motor are fixedly connected with first gears, and the two first gears are meshed with each other. The outer surfaces of the two groups of stirring blades (221) are in abutment with the circumferential inner wall of the drying barrel (3).

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