A mute type high-pass rate airflow screening instrument turntable structure

Abstract

The application relates to a mute high-pass-rate airflow screening instrument disc structure and belongs to the technical field of granular material analysis and screening, which comprises a screening instrument body, a airflow generator body arranged on one side of the screening instrument body, a screening box arranged on the outer wall of the screening instrument body, a screening cavity formed in the inner wall of the screening box, a filter screen main body arranged on the inner wall of the screening cavity, and a discharge collecting box arranged below the airflow generator body. The negative pressure nozzle is arranged, when objects are continuously screened in the screening cavity, in order to continuously dredge the surface of the filter screen during the screening of the objects, prevent the filter screen from being blocked after long-time use and affect the screening precision, and when the rotating rod drives the negative pressure nozzle to continuously rotate, the objects are blown up and continuously impact the surface of the filter screen, the filter holes on the surface of the filter screen are synchronously dredged under the impact and vibration of the objects, the continuous screening efficiency of the airflow screening instrument on the objects is improved, and the like.

Description

Technical Field

[0001] This invention relates to the field of particulate material analysis and sieving technology, and more specifically, to a silent, high-throughput airflow sieving instrument rotary table structure. Background Technology

[0002] Airflow sieves are high-precision screening equipment for screening fine powders with a screen. They are widely used in industries such as chemical, pharmaceutical, food, papermaking, metallurgy, building materials, rubber, and machinery. They can continuously screen powdery materials with a fineness range of 80-500 mesh. The screens can be replaced at will. Airflow sieves are characterized by high screening efficiency, large output, precise fineness, and no mixing of oversized particles.

[0003] In the prior art, a negative pressure airflow sieving device with announcement number CN221983152U includes a frame with a separation cylinder fixedly installed at its upper end. An air outlet cylinder is welded to one side of the separation cylinder, and a negative pressure cylinder is welded to the other side. A drive cylinder is welded to one side of the negative pressure cylinder. A discharge cylinder is integrally provided at the lower end of the air outlet cylinder. A connecting rod is fixedly installed on the outer wall of a section inside the separation cylinder. This utility model proposes a negative pressure airflow sieving device. The rotation of the shaft drives the fan to rotate at high speed. The fan blows the air out of the airflow sieve, creating a negative pressure inside the airflow sieve. The feed inlet is connected to the feeding equipment. Because the airflow sieve is under negative pressure, the powder in the feeding equipment is attracted upward by the negative pressure and attempts to pass through the screen. Powder with a particle size smaller than the screen can pass through the screen and be blown towards the air outlet cylinder, and then discharged through the discharge cylinder on one side of the air outlet cylinder. Powder with a larger particle size cannot pass through the screen and accumulates on the outer wall of the screen to achieve separation.

[0004] However, particle size analysis of particulate materials is crucial in many scientific research and production fields. Traditional screening equipment, such as vibrating sieves, mainly relies on mechanical vibration to classify particles by passing them through a screen. However, this method has many drawbacks: on the one hand, for tiny particles, mechanical vibration is difficult to effectively disperse them and allow them to pass through the screen, resulting in low screening efficiency and easy particle agglomeration, which affects screening accuracy; on the other hand, when dealing with some materials that are prone to static electricity or have high viscosity, the screen is easily clogged, requiring frequent cleaning, which seriously affects the experimental process. In addition, traditional sieves have a low degree of automation, requiring frequent manual intervention and data recording, which increases human error and labor intensity, and does not meet people's needs. Therefore, we propose a silent, high-throughput airflow sieve rotary structure. Summary of the Invention

[0005] To address the problems mentioned in the background, this invention provides a silent, high-throughput airflow sieve rotary structure to solve the problems of low sieving accuracy, poor efficiency, easy clogging, and insufficient automation in existing sieving equipment, thereby achieving rapid, accurate, and automated sieving and analysis of particulate materials.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A silent, high-throughput airflow sieving disc structure includes a sieving body, an airflow generator body on one side of the sieving body, a sieving box inside the sieving body, a sieving chamber on the inner wall of the sieving box, a filter screen body on the inner wall of the sieving chamber, a discharge collection box below the airflow generator body, a control panel on the outer wall of the sieving body, and a printing outlet on the side wall of the sieving body. The screening instrument is equipped with a drive motor inside. The output end of the drive motor is fixedly connected to a rotating shaft. A rotating rod located inside the screening chamber is detachably connected to the outer wall of the rotating shaft. The bottom of the rotating rod is provided with a mounting hole at the connection point with the rotating shaft. The outer wall of the rotating rod is provided with bolt mounting holes. A conveying pipe extending to the outer wall of the screening instrument is fixedly connected to the bottom of the screening box. A pressure regulating valve is provided on the outer wall of the conveying pipe. A negative pressure nozzle is provided on the top of the rotating rod. The outer wall of the screening box is provided with a positioning mechanism. With the mounting hole and bolt mounting holes, the rotating shaft drives the rotating rod to rotate continuously. Under the action of the negative pressure nozzle, the air pressure generates a continuous airflow in the screening chamber to screen objects. In order to further improve the connection stability between the rotating shaft and the rotating rod, after the rotating shaft and the rotating rod are installed through the mounting hole, the rotating shaft and the rotating rod are then installed with bolts through the bolt mounting holes to improve the stability of the rotating rod under continuous rotation.

[0007] Preferably, the outer wall of the rotating shaft has an insertion hole corresponding to the bolt mounting hole, the rotating rod is located below the filter screen body, and the filter screen body is fixed in the screening chamber by a sealing ring.

[0008] Preferably, the airflow generator body includes a negative pressure device, a filter, and an air inlet pipe. The control panel is internally equipped with a microprocessor and connected to a pressure sensor. The negative pressure nozzle is designed to continuously clear the filter surface during the continuous sieving of objects in the sieving chamber, preventing the filter from becoming clogged and affecting sieving accuracy over long-term use. When the rotating rod drives the negative pressure nozzle to rotate continuously, the objects are blown up and continuously impact the filter surface. This impact and vibration simultaneously clears the filter pores on the filter surface, thereby improving the efficiency of the airflow sieving instrument in continuously sieving objects.

[0009] Preferably, the outer wall of the delivery pipe is detachably connected to a connecting hose that is connected to the outer wall of the airflow generator, and a vacuum cleaner connecting pipe is provided on the top of the airflow generator.

[0010] Preferably, the positioning mechanism includes a positioning block, a fastening turntable is threadedly connected to the outer wall of the screening box, a sliding column is slidably connected to the outer wall of the fastening turntable, a fixed plate is slidably connected to the outer wall of the sliding column and fixedly connected to the outer wall of the screening box, an inclined groove is formed at the connection between the outer wall of the fastening turntable and the sliding column, a sliding groove is formed at the connection between the outer wall of the fixed plate and the sliding column, a positioning block is fixedly connected to the top of the sliding column, a cover plate located on one side of the positioning block is placed on the top of the screening box, and an anti-sway mechanism is provided on the outer wall of the connecting hose. The positioning block, when continuously screening objects using an airflow screening instrument, improves the stability of the cover plate's sealing protection of the screening chamber and prevents the cover plate from shaking and affecting the sealing effect of the screening chamber. After placing the cover plate, rotating the turntable causes the sliding column to slide synchronously along the inner walls of the inclined groove and the sliding groove, and causes the two sets of positioning blocks to slide relative to each other, achieving the effect of limiting and fixing the cover plate, thus improving the stability of the cover plate during daily use.

[0011] Preferably, the positioning blocks are symmetrically arranged on both sides of the cover plate, and the outer wall contour of the positioning blocks is L-shaped.

[0012] Preferably, the anti-sway mechanism includes a first protective plate and a second protective plate. The first protective plate is sleeved on the outer wall of the connecting hose. The second protective plate, which is sleeved on the outer wall of the connecting hose, is engaged with the outer wall of the first protective plate. A pull rope is detachably connected to the outer wall of the first protective plate. One end of the pull rope is detachably connected to a connecting ring fixedly connected to the outer wall of the positioning block. A first connecting block is fixedly connected to the outer wall of the second protective plate. A second connecting block is fixedly connected to the outer wall of the first protective plate. A plug rod is threadedly connected to the outer wall of the first connecting block. The end of the plug rod is fixedly connected to a plug plate that is slidably connected to the outer wall of the second connecting block. The outer wall of the plug rod is provided with an external spiral. An inner spiral is provided at the connection point between the outer wall of the first connecting block and the outer spiral, and a connection hole is provided at the connection point between the outer wall of the second connecting block and the insert plate. When the screened material is continuously conveyed through the connecting hose, to prevent large fluctuations in the connecting hose due to continuous airflow, which could cause tension and reduce the hose's sealing performance, the first and second protective plates can be fitted together and installed on the outer wall of the connecting hose. Then, a pull rope can be tied to the first protective plate and simultaneously to the connecting ring. With the positioning block sliding in the center, the pull rope remains taut, thus improving the stability of the connecting hose under airflow.

[0013] Preferably, the inner wall contour of the connecting hole is larger than the outer wall contour of the insert plate, the width of the connecting hole is smaller than the length of the insert plate, and the outer wall contour of the connection part between the insert plate and the insert rod is T-shaped.

[0014] Preferably, the outer wall of the screening instrument body is detachably connected to a connecting plate. The outer wall of the connecting plate is provided with a fastening nut. The inner wall of the fastening nut is threaded with a fastening bolt. One end of the fastening bolt is rotatably connected to a limiting block that is slidably connected to the outer wall of the connecting plate. The outer wall of the limiting block is fixedly connected to a spring that is fixedly connected to the outer wall of the connecting plate. A fixing groove is provided at the connection between the outer wall of the connecting plate and the limiting block. When the connecting hose and the conveying pipe are installed and used, in order to improve the stability of the interface between the connecting hose and the conveying pipe for a long time, the bolt is rotated and the limiting action of the nut causes the limiting block to slide along the inner wall of the fixing groove, and continuously squeezes the connection between the connecting hose and the conveying pipe, thereby improving the stability of the connection between the connecting hose and the conveying pipe.

[0015] Preferably, the limiting block is positioned on the installation trajectory of the delivery pipe and the connecting hose, and the outer wall contour of the limiting block is semi-circular.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The mounting holes and bolt mounting holes provided in this invention are designed so that when the rotating shaft drives the rotating rod to rotate continuously, and under the action of the negative pressure nozzle, the air pressure generates a continuous airflow in the screening chamber to screen objects. In order to further improve the connection stability between the rotating shaft and the rotating rod, after the rotating shaft and the rotating rod are installed through the mounting holes, the rotating shaft and the rotating rod are then installed through the bolt mounting holes, thereby improving the stability of the rotating rod under continuous rotation.

[0017] 2. The negative pressure nozzle of this invention, when an object is continuously sieved in the sieving chamber, in order to continuously clear the filter screen surface during the sieving process and prevent the filter screen from becoming clogged and affecting the sieving accuracy after long-term use, causes the object to be blown up and continuously impact the filter screen surface when the rotating rod drives the negative pressure nozzle to rotate continuously. This allows the filter screen pores on the filter screen surface to be cleared simultaneously under the impact and vibration of the object, thereby improving the efficiency of the airflow sieve for continuous sieving of objects.

[0018] 3. The positioning block provided in this invention, when the object is continuously screened by the airflow sieve, in order to improve the stability of the cover plate in sealing and protecting the screening chamber and prevent the cover plate from shaking and affecting the sealing effect of the screening chamber, after the cover plate is placed, the turntable is rotated, which drives the sliding column to slide synchronously along the inner wall of the inclined groove and the sliding groove, and drives the two sets of positioning blocks to slide relative to each other, so as to achieve the effect of limiting and fixing the cover plate, thereby improving the stability of the cover plate in daily use.

[0019] 4. In order to prevent the connecting hose from fluctuating too much and causing a decrease in the sealing performance of the hose due to the continuous conveying of the screened object through the connecting hose, the first and second protective plates of the present invention can be fitted and installed on the outer wall of the connecting hose. Then, the pull rope can be tied to the first protective plate and the connecting ring. With the centering and sliding of the positioning block, the pull rope is kept taut, thereby improving the stability of the connecting hose under the action of airflow.

[0020] 5. The limiting block provided in this invention, when installed and used through the connecting hose and the delivery pipe, in order to improve the stability of the interface between the connecting hose and the delivery pipe for long-term use, rotates the bolt and drives the limiting block to slide along the inner wall of the fixing groove through the limiting action of the nut, and continuously squeezes the connection between the connecting hose and the delivery pipe, thereby improving the stability of the connection between the connecting hose and the delivery pipe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the sieving instrument of the present invention; Figure 4 This is a schematic diagram of the rotating rod position distribution structure of the present invention; Figure 5 This is a schematic diagram of the mounting hole location distribution structure of the present invention; Figure 6 This is a schematic diagram of the negative pressure nozzle position distribution structure of the present invention; Figure 7 This is a schematic diagram of the bolt mounting hole location distribution structure of the present invention; Figure 8 This is a schematic diagram of the connecting ring position distribution structure of the present invention; Figure 9 This is a schematic diagram showing the positional distribution of the first and second protective plates of the present invention; Figure 10 For the present invention Figure 8 Enlarged structural diagram at point A in the diagram; Figure 11 For the present invention Figure 2 Enlarged structural diagram at point B in the diagram; Figure 12 For the present invention Figure 9 A magnified structural diagram at point C in the diagram.

[0022] The labels in the attached diagram are: 1. Screening instrument body; 2. Airflow generator body; 3. Screening chamber; 4. Discharge collection box; 5. Control panel; 6. Printing outlet; 7. Screening box; 8. Filter screen body; 9. Drive motor; 10. Rotating shaft; 11. Rotating rod; 12. Mounting hole; 13. Bolt mounting hole; 14. Conveying pipe; 15. Air pressure regulating valve; 16. Negative pressure nozzle; 17. Fastening turntable; 18. Fixed plate; 19. Sliding column; 20. Inclined chute; 21. Slide chute; 22. 23. Cover plate; 24. Positioning block; 25. Connecting hose; 26. Vacuum cleaner connecting pipe; 27. First protective plate; 28. Second protective plate; 29. ​​Pull rope; 30. Connecting ring; 31. Connecting plate; 32. Fastening nut; 33. Fastening bolt; 34. Limiting block; 35. Spring; 36. Fixing groove; 37. First connecting block; 38. Insert rod; 39. Inserting plate; 40. Outer spiral; 41. Inner spiral; 42. Connecting hole. Detailed Implementation

[0023] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0024] Example 1:

[0025] Please see Figures 1 to 12 This embodiment provides a silent, high-throughput airflow sieving turntable structure, including a sieving body 1, an airflow generator body 2 on one side of the sieving body 1, a sieving box 7 inside the sieving body 1, a sieving chamber 3 on the inner wall of the sieving box 7, a filter screen body 8 on the inner wall of the sieving chamber 3, a discharge collection box 4 below the airflow generator body 2, a control screen 5 on the outer wall of the sieving body 1, and a printing outlet 6 on the side wall of the sieving body 1. The sieve body 1 is equipped with a drive motor 9. The output end of the drive motor 9 is fixedly connected to a rotating shaft 10. The outer wall of the rotating shaft 10 is detachably connected to a rotating rod 11 located inside the sieve chamber 3. The bottom of the rotating rod 11 is provided with a mounting hole 12 at the connection point with the rotating shaft 10. The outer wall of the rotating rod 11 is provided with a bolt mounting hole 13. The bottom of the sieve box 7 is fixedly connected to a conveying pipe 14 extending to the outer wall of the sieve body 1. The outer wall of the conveying pipe 14 is provided with a pressure regulating valve 15. The top of the rotating rod 11 is provided with a negative pressure nozzle 16. The outer wall of the sieve box 7 is provided with a positioning mechanism.

[0026] like Figure 5As shown, the outer wall of the rotating shaft 10 is provided with an insertion hole corresponding to the bolt mounting hole 13. The rotating rod 11 is located below the filter screen body 8, and the filter screen body 8 is fixed in the screening chamber 3 by a sealing ring. This arrangement of the rotating rod 11 below the filter screen body 8 facilitates the automatic collision and anti-clogging effect of the filter screen body 8 under the action of airflow.

[0027] like Figure 1 and Figure 2 As shown, the airflow generator body 2 includes a negative pressure device, a filter, and an air inlet pipe. The control panel 5 is equipped with a microprocessor and a connected pressure sensor. The negative pressure device provides a stable air source, and the filter performs multi-stage filtration on the incoming air to remove impurities and moisture, ensuring that the air entering the screening chamber 3 is pure. The sensor monitors the pressure during the screening process in real time. In addition, the flow rate of the air inlet system can be adjusted to realize the automated control of the entire screening process. At the same time, the control system can also be connected to a printer to print, transmit, and store the screening data in real time for convenient subsequent analysis and processing.

[0028] like Figure 2 As shown, the outer wall of the conveying pipe 14 is detachably connected to the connecting hose 24 which is connected to the outer wall of the airflow generator body 2. The top of the airflow generator body 2 is provided with a vacuum cleaner connecting pipe 25, which facilitates the convenient conveying and collection of objects through the setting of the connecting hose 24.

[0029] like Figure 8 and Figure 10 As shown, the positioning mechanism includes a positioning block 23. A fastening turntable 17 is threadedly connected to the outer wall of the screening box 7. A sliding column 19 is slidably connected to the outer wall of the fastening turntable 17. A fixing plate 18, which is fixedly connected to the outer wall of the sliding column 19, is slidably connected to the outer wall of the screening box 7. An inclined groove 20 is provided at the connection between the outer wall of the fastening turntable 17 and the sliding column 19. A sliding groove 21 is provided at the connection between the outer wall of the fixing plate 18 and the sliding column 19. The positioning block 23 is fixedly connected to the top of the sliding column 19. A cover located on one side of the positioning block 23 is placed on the top of the screening box 7. The outer wall of the cover plate 22 and the connecting hose 24 is provided with an anti-sway mechanism. When the object is continuously screened by the airflow sieve, in order to improve the stability of the cover plate 22 in sealing and protecting the screening chamber 3 and to prevent the cover plate 22 from shaking and affecting the sealing effect of the screening chamber 3, after the cover plate 22 is placed, the fastening turntable 17 is rotated to drive the sliding column 19 to slide synchronously along the inner wall of the inclined groove 20 and the sliding groove 21, and to drive the two sets of positioning blocks 23 to slide relative to each other, so as to achieve the effect of limiting and fixing the cover plate 22 and improving the stability of the cover plate 22 in daily use.

[0030] like Figure 10As shown, the positioning blocks 23 are symmetrically arranged on both sides of the cover plate 22. The outer wall contour of the positioning blocks 23 is L-shaped, which is conducive to achieving the effect of limiting and fixing the cover plate 22 by setting the outer wall contour of the positioning blocks 23 in an L-shape, thereby improving the stability of the cover plate 22 in daily use.

[0031] like Figures 1-12 As shown, the anti-sway mechanism includes a first protective plate 26 and a second protective plate 27. The first protective plate 26 is sleeved on the outer wall of the connecting hose 24. The second protective plate 27, which is sleeved on the outer wall of the connecting hose 24, is engaged with the outer wall of the first protective plate 26. A pull rope 28 is detachably connected to the outer wall of the first protective plate 26. One end of the pull rope 28 is detachably connected to a connecting ring 29 that is fixedly connected to the outer wall of the positioning block 23. A first connecting block 36 is fixedly connected to the outer wall of the second protective plate 27. A second connecting block 37 is fixedly connected to the outer wall of the first protective plate 26. A plug rod 38 is threadedly connected to the outer wall of the first connecting block 36. The end of the plug rod 38 is fixedly connected to a plug plate 39 that is slidably connected to the outer wall of the second connecting block 37. An external spiral 40 is provided on the outer wall of the plug rod 38. An inner spiral 41 is provided at the connection between the outer wall of the first connecting block 36 and the outer spiral 40, and a connecting hole 42 is provided at the connection between the outer wall of the second connecting block 37 and the insert plate 39. When the screened object is continuously conveyed through the connecting hose 24, in order to prevent the connecting hose 24 from fluctuating greatly under continuous airflow, causing the hose to be pulled and affecting the sealing performance of the hose, the first protective plate 26 and the second protective plate 27 can be snapped and installed on the outer wall of the connecting hose 24, and then the pull rope 28 can be tied to the first protective plate 26 and the connecting ring 29. Under the centering and sliding of the positioning block 23, the pull rope 28 is kept taut, thereby improving the stability of the connecting hose 24 under the action of airflow.

[0032] like Figure 12 As shown, the inner wall contour of the connecting hole 42 is larger than the outer wall contour of the insert plate 39, the width of the connecting hole 42 is smaller than the length of the insert plate 39, and the outer wall contour of the connection part between the insert plate 39 and the insert rod 38 is T-shaped, which is beneficial to achieve the effect of pre-fitting and installing the first protective plate 26 and the second protective plate 27 by using the inner wall contour of the connecting hole 42 which is larger than the outer wall contour of the insert plate 39.

[0033] like Figure 11As shown, a connecting plate 30 is detachably connected to the outer wall of the screening instrument body 1. A fastening nut 31 is provided on the outer wall of the connecting plate 30. A fastening bolt 32 is threadedly connected to the inner wall of the fastening nut 31. One end of the fastening bolt 32 is rotatably connected to a limiting block 33 that is slidably connected to the outer wall of the connecting plate 30. A spring 34 is fixedly connected to the outer wall of the limiting block 33 and is fixedly connected to the outer wall of the connecting plate 30. A fixing groove 35 is provided at the connection between the outer wall of the connecting plate 30 and the limiting block 33. When the connecting hose 24 is installed and used with the conveying pipe 14, in order to improve the stability of the interface between the connecting hose 24 and the conveying pipe 14 during long-term use, the bolt is rotated and the limiting nut limits the limiting block 33 to slide along the inner wall of the fixing groove 35, and continuously squeezes the connection between the connecting hose 24 and the conveying pipe 14, thereby improving the stability of the connection between the connecting hose 24 and the conveying pipe 14.

[0034] like Figure 11 As shown, the limiting block 33 is set on the installation trajectory of the conveying pipe 14 and the connecting hose 24. The outer wall contour of the limiting block 33 is semi-circular, which is beneficial to improving the stability of the connection between the connecting hose 24 and the conveying pipe 14 by setting the limiting block 33 on the installation trajectory of the conveying pipe 14 and the connecting hose 24.

[0035] Working principle: like Figures 1-12 As shown, when the airflow sieving instrument is in use, firstly, the rotating shaft 10 drives the rotating rod 11 to rotate continuously, and under the action of the negative pressure nozzle 16, the air pressure generates a continuous airflow in the sieving chamber 3 to sieve the objects. In order to further improve the connection stability between the rotating shaft 10 and the rotating rod 11, after the rotating shaft 10 and the rotating rod 11 are installed through the mounting hole 12, the rotating shaft 10 and the rotating rod 11 are then installed with bolts through the bolt mounting hole 13, thereby improving the stability of the rotating rod 11 under continuous rotation. Next, when the object is continuously screened in the screening chamber 3, in order to ensure the continuous unblocking effect on the filter screen surface during screening and to prevent the filter screen from becoming clogged and affecting the screening accuracy after long-term use, the rotating rod 11 drives the negative pressure nozzle 16 to rotate continuously, which will cause the object to be blown up and continuously impact the filter screen surface. Under the impact and vibration of the object, the filter pores on the filter screen surface are simultaneously unblocked, thereby improving the efficiency of the airflow sieve for continuous screening of objects. Next, when the object is continuously screened by the airflow sieve, in order to improve the stability of the cover plate 22 in sealing and protecting the screening chamber 3 and to prevent the cover plate 22 from shaking and affecting the sealing effect of the screening chamber 3, after the cover plate 22 is placed, the fastening turntable 17 is rotated, which drives the sliding column 19 to slide synchronously along the inner wall of the inclined groove 20 and the sliding groove 21, and drives the two sets of positioning blocks 23 to slide relative to each other, so as to achieve the effect of limiting and fixing the cover plate 22 and improving the stability of the cover plate 22 in daily use. Next, when installing and using the connecting hose 24 and the delivery pipe 14, in order to improve the stability of the interface between the connecting hose 24 and the delivery pipe 14 during long-term use, the rotating bolt, through the limiting action of the nut, drives the limiting block 33 to slide along the inner wall of the fixing groove 35, and continuously squeezes the connection between the connecting hose 24 and the delivery pipe 14, thereby improving the stability of the connection between the connecting hose 24 and the delivery pipe 14.

[0036] Finally, start-up preparation: check whether the connections of each component of the equipment are normal, connect the power supply, turn on the negative airflow generator to provide 0.3Mpa airflow, and when the differential pressure sensor detects that the screen differential pressure is >50Pa, trigger reverse jetting to stabilize its operation.

[0037] - Parameter settings: On the control system operation interface, set parameters such as air inlet flow rate, screening time, and pressure threshold according to the characteristics of the material to be screened and the experimental requirements.

[0038] - Sample addition: Add an appropriate amount of particulate material into the screening chamber 3 through the feed inlet.

[0039] -Start Screening: Press the start button, and the air intake system will begin working. Air enters the screening chamber 3 through the dispersion nozzle, driving the material to move within the chamber and perform screening. The control system monitors various parameters in real time and automatically adjusts the equipment's operating status according to the preset program.

[0040] - Screening complete: The equipment automatically stops operating after the set screening time. Remove the collection bottle and perform subsequent analysis and processing on the screened material.

[0041] - Shutdown procedure: Turn off the vacuum cleaner, purge any residual gas from the system, and turn off the power.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A silent, high-throughput airflow sieving instrument rotary table structure, comprising a sieving instrument body (1), characterized in that: An airflow generator body (2) is provided on one side of the screening instrument body (1). A screening box (7) is provided inside the screening instrument body (1). A screening chamber (3) is opened on the inner wall of the screening box (7). A filter screen body (8) is provided on the inner wall of the screening chamber (3). A discharge collection box (4) is provided below the airflow generator body (2). A control screen (5) is provided on the outer wall of the screening instrument body (1). A printing outlet (6) is opened on the side wall of the screening instrument body (1). The sieving instrument body (1) is equipped with a drive motor (9) inside. The output end of the drive motor (9) is fixedly connected to a rotating shaft (10). The outer wall of the rotating shaft (10) is detachably connected to a rotating rod (11) located inside the sieving chamber (3). The bottom of the rotating rod (11) and the connection part of the rotating shaft (10) are provided with an installation hole (12). The outer wall of the rotating rod (11) is provided with a bolt installation hole (13). The bottom of the sieving box (7) is fixedly connected to a conveying pipe (14) extending to the outer wall of the sieving instrument body (1). The outer wall of the conveying pipe (14) is provided with a pressure regulating valve (15). The top of the rotating rod (11) is provided with a negative pressure nozzle (16). The outer wall of the sieving box (7) is provided with a positioning mechanism. The outer wall of the delivery pipe (14) is detachably connected to a connecting hose (24) that is connected to the outer wall of the airflow generator body (2), and a vacuum cleaner connecting pipe (25) is provided on the top of the airflow generator body (2). The positioning mechanism includes a positioning block (23), a fastening turntable (17) is threadedly connected to the outer wall of the screening box (7), a sliding column (19) is slidably connected to the outer wall of the fastening turntable (17), a fixed plate (18) is slidably connected to the outer wall of the sliding column (19) and fixedly connected to the outer wall of the screening box (7), a slanted groove (20) is provided at the connection between the outer wall of the fastening turntable (17) and the sliding column (19), a sliding groove (21) is provided at the connection between the outer wall of the fixed plate (18) and the sliding column (19), a positioning block (23) is fixedly connected to the top of the sliding column (19), a cover plate (22) located on one side of the positioning block (23) is placed on the top of the screening box (7), and an anti-shaking mechanism is provided on the outer wall of the connecting hose (24).

2. The rotary structure of a silent, high-throughput airflow sieving instrument according to claim 1, characterized in that: The outer wall of the rotating shaft (10) is provided with an insertion hole corresponding to the bolt mounting hole (13). The rotating rod (11) is located below the filter body (8), and the filter body (8) is fixed in the screening chamber (3) by a sealing ring.

3. The rotary structure of a silent, high-throughput airflow sieving instrument according to claim 1, characterized in that: The airflow generator body (2) includes a negative pressure device, a filter and an air inlet pipe, and the control panel (5) is equipped with a microprocessor and a pressure sensor.

4. The rotary structure of a silent, high-throughput airflow sieving instrument according to claim 1, characterized in that: The positioning blocks (23) are symmetrically arranged on both sides of the cover plate (22), and the outer wall contour of the positioning blocks (23) is L-shaped.

5. The rotary structure of a silent, high-throughput airflow sieving instrument according to claim 1, characterized in that: The anti-sway mechanism includes a first protective plate (26) and a second protective plate (27). The first protective plate (26) is sleeved on the outer wall of the connecting hose (24). The second protective plate (27) is sleeved on the outer wall of the first protective plate (24). A pull rope (28) is detachably connected to the outer wall of the first protective plate (26). One end of the pull rope (28) is detachably connected to a connecting ring (29) that is fixedly connected to the outer wall of the positioning block (23). A first connecting block (36) is fixedly connected to the outer wall of the second protective plate (27). The outer wall of the first protective plate (26) is fixedly connected to a second connecting block (37), the outer wall of the first connecting block (36) is threadedly connected to a plug rod (38), the end of the plug rod (38) is fixedly connected to a plug plate (39) that is slidably connected to the outer wall of the second connecting block (37), the outer wall of the plug rod (38) is provided with an outer spiral (40), the connection part between the outer wall of the first connecting block (36) and the outer spiral (40) is provided with an inner spiral (41), and the connection part between the outer wall of the second connecting block (37) and the plug plate (39) is provided with a connection hole (42).

6. The rotary table structure of a silent, high-throughput airflow sieving instrument according to claim 5, characterized in that: The inner wall profile of the connecting hole (42) is larger than the outer wall profile of the insert plate (39), the width of the connecting hole (42) is smaller than the length of the insert plate (39), and the outer wall profile of the connection part between the insert plate (39) and the insert rod (38) is T-shaped.

7. The rotary table structure of a silent high-throughput airflow sieving instrument according to claim 1, characterized in that: The outer wall of the screening instrument body (1) is detachably connected to a connecting plate (30). The outer wall of the connecting plate (30) is provided with a fastening nut (31). The inner wall of the fastening nut (31) is threaded with a fastening bolt (32). One end of the fastening bolt (32) is rotatably connected to a limiting block (33) that is slidably connected to the outer wall of the connecting plate (30). The outer wall of the limiting block (33) is fixedly connected to a spring (34) that is fixedly connected to the outer wall of the connecting plate (30). A fixing groove (35) is provided at the connection between the outer wall of the connecting plate (30) and the limiting block (33).

8. The rotary structure of a silent, high-throughput airflow sieving instrument according to claim 7, characterized in that: The limiting block (33) is set on the installation trajectory of the conveying pipe (14) and the connecting hose (24), and the outer wall contour of the limiting block (33) is semi-circular.

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