A physical vibration inverted coal powder separator and a separation method thereof

Abstract

The present application relates to the technical field of coal powder separation, and specifically relates to a physical vibration inverted coal powder separator and a separation method thereof, which comprises a rack, a frame plate and a screen frame, a rotating shaft is rotationally arranged on the rack, one end of the frame plate is rotationally connected with the rotating shaft, an arc-shaped toothed plate is arranged at the other end of the frame plate, an adjusting assembly is arranged on the rack, the adjusting assembly is matched with the arc-shaped toothed plate, a vibration assembly is arranged on the frame plate, the vibration assembly is matched with the other end of the screen frame, the adjusting assembly is connected with the rotating shaft through a transmission structure, and the vibration assembly is connected with the rotating shaft through a linkage structure, the present application, through the mutual mechanical cooperation between the rotating shaft, the transmission structure, the linkage structure, the vibration assembly and the adjusting assembly, not only can make the screen frame always keep the state of vibrating screening, but also can make the screen frame first horizontally vibrate and screen, so that the screening is more sufficient, then the screen frame is inclined at a certain angle, the large-particle coal powder in the screen frame is poured out, and the trouble of cleaning the blocked mesh holes is avoided.

Description

Technical Field

[0001] This invention relates to the field of pulverized coal separation technology, specifically a physically vibrating inverted pulverized coal separator and its separation method. Background Technology

[0002] Coal powder is mainly produced by coal mills. A coal mill is a device that grinds coal lumps into coal powder. Its working principle involves a cylinder containing grinding media such as steel balls or steel rods. As the cylinder rotates, the grinding media are lifted to a certain height and then fall, impacting, crushing, and grinding the coal lumps. Through repeated impact and grinding, the coal lumps are gradually pulverized into coal powder.

[0003] The main reasons for the need to screen pulverized coal in practical applications are as follows: 1. Improve combustion efficiency: In pulverized coal combustion systems of industrial boilers or thermal power plants, pulverized coal of different particle sizes has different combustion characteristics. Finer pulverized coal burns relatively faster and can come into more complete contact with oxygen in the air. Through sieving, pulverized coal can be classified according to particle size, and then pulverized coal of a suitable particle size range can be selected to enter the furnace according to the requirements of the combustion equipment.

[0004] 2. Ensuring stable product quality: In some chemical industries, such as coal gasification in coal chemical processes, the particle size of coal powder has a significant impact on product quality. Coarse coal powder may lead to incomplete gasification, resulting in decreased product yield and quality; while overly fine powder may increase production costs. Screening ensures that the particle size of the coal powder entering the gasification furnace meets process requirements, thereby guaranteeing stable final product quality.

[0005] 3. Meets environmental protection requirements: Coarser coal powder particles may not burn completely during combustion, producing more unburned solids. These unburned particles will be emitted into the atmosphere with the flue gas, causing environmental pollution.

[0006] Coal powder screening typically requires coal powder separation equipment. However, existing coal powder separators have some shortcomings. For example, to ensure continuous and efficient screening, current equipment generally uses an inclined vibrating screen. With an inclined screen, the coal powder has a short residence time above it and quickly slides off under gravity and vibration. For highly viscous or unevenly sized coal powder, it's difficult to complete thorough screening in a short time, resulting in some small particles remaining mixed with larger ones. If the vibrating screen is set horizontally, large particles accumulate and clog the mesh over time. In large-scale coal powder production lines, the high coal powder output makes the screen mesh easily deformed or clogged by large particles, causing a sharp decline in screening efficiency over time. Cleaning these clogged meshes is also troublesome, requiring manual cleaning or the use of specialized cleaning tools after machine shutdown. Summary of the Invention

[0007] The purpose of this invention is to provide a physically vibrating inverted coal powder separator and its separation method to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A physically vibrating inverted coal powder separator includes a frame, a frame plate, and a screen frame. A rotating shaft is rotatably mounted on the frame. The frame plate is horizontally mounted on the frame, with one end of the frame plate rotatably connected to the rotating shaft and the other end of the frame plate having an arc-shaped toothed plate. The frame is equipped with an adjustment component, which cooperates with the arc-shaped toothed plate. When the adjustment component is running, the frame plate will first tilt at a certain angle with the rotating shaft as the rotation center, maintain the tilted state for a period of time, and then rotate back to the horizontal state. One end of the screen frame is rotatably connected to the frame plate, and a vibration component is provided on the frame plate. The vibration component cooperates with the other end of the screen frame. When the vibration component is running, the screen frame will vibrate continuously, thereby screening the coal powder. A motor is mounted on the frame, and the output end of the motor is fixedly connected to one end of the rotating shaft. The adjustment component is connected to the rotating shaft through a transmission structure, and the vibration component is connected to the rotating shaft through a linkage structure. When the rotating shaft rotates, the transmission structure and the linkage structure will drive the adjustment component and the vibration component to operate, respectively.

[0009] As a further embodiment of the present invention: the adjustment assembly includes a bidirectional lead screw and a rotating rod, both of which are horizontally rotatably mounted on the frame; A sleeve is slidably fitted on the outer wall of the bidirectional lead screw, and the sleeve cooperates with the bidirectional lead screw. A collar is slidably fitted on the outer wall of the rotating rod, and the sleeve and the collar are fixedly connected by a connecting rod.

[0010] As a further embodiment of the present invention: the outer wall of the rotating rod is provided with a sliding groove, the sliding groove including a straight groove, a first spiral groove and a second spiral groove, the straight groove being located in the middle section of the rotating rod and arranged along the length direction of the rotating rod; The first spiral groove and the second spiral groove are located at the two ends of the rotating rod, and the two ends of the straight groove are connected to the first spiral groove and the second spiral groove, respectively.

[0011] As a further embodiment of the present invention: the inside of the collar is fitted with rolling balls, and the rolling balls are also fitted into the first spiral groove. A gear is coaxially mounted on the rotating rod, and the gear meshes with the arc-shaped toothed plate.

[0012] As a further embodiment of the present invention: the vibration assembly includes a rotating column and a hook spring, the rotating column is horizontally rotatably mounted on the frame plate, and the two ends of the hook spring are respectively hooked and connected to the other end of the screen frame and the end of the frame plate near the rotating column; The rotating column is equipped with a cam, and a roller is rotatably mounted on one end of the cam. The bottom of the screen frame is in contact with the cam.

[0013] As a further embodiment of the present invention: the transmission structure includes a first transmission wheel and a second transmission wheel, wherein the first transmission wheel is coaxially arranged on the rotating shaft; The second transmission wheel is coaxially mounted on the bidirectional lead screw, and the first and second transmission wheels are connected by a first belt.

[0014] As a further embodiment of the present invention: the linkage structure includes a third transmission wheel and a fourth transmission wheel, wherein the third transmission wheel is coaxially arranged on the rotating shaft; The fourth transmission wheel is coaxially mounted on the rotating column, and the third and fourth transmission wheels are connected by a second belt.

[0015] As a further embodiment of the present invention: a feeding hopper is provided on the frame via a bracket, and the feeding hopper is located above the screen frame; The frame is equipped with a receiving hopper, which is located below the frame plate; A door panel is rotatably provided at one end of the screen frame, and a guide plate is provided at one end of the frame panel.

[0016] A method for separating pulverized coal using a pulverized coal separator with physical vibration inversion as described above includes the following steps: Step 1: Pre-drying. A hot air blower is used to dry the coal powder to be separated. The heat of the hot air is used to evaporate the moisture in the coal powder, reducing the moisture content of the coal powder to about 2%-3%. Step 2: Particle size adjustment. Use a ball mill to grind the raw coal to the set particle size so that the particle size of the coal powder is controlled within a suitable range, so as to ensure the flowability and screening efficiency of the coal powder during the screening process. Step 3: Impurity removal. The coal powder is passed through the magnetic field area generated by the permanent magnet drum separator. Iron impurities are adsorbed on the surface of the magnetic drum and separated. Step 4: Separation process. The coal powder processed above is added into a physically vibrating inverted coal powder separator. The coal powder is screened under the action of the physically vibrating inverted coal powder separator. Step 5: Conveying and storing. The separated coal powder is conveyed by a belt conveyor and stored in a special coal powder silo or tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The rotating shaft will rotate under the drive of the motor. During the rotation of the shaft, the transmission structure will drive the adjustment component to operate, and the linkage structure will drive the vibration component to operate synchronously. Since the screen frame is set horizontally, with one end rotatably connected to the frame plate and the other end cooperating with the vibration component, the screen frame will vibrate continuously when the vibration component is running, thereby screening the coal powder inside. Also, since one end of the frame plate is rotatably connected to the rotating shaft, and the arc-shaped toothed plate fixed to the other end of the frame plate cooperates with the adjustment component, when the adjustment component is running, the frame plate will first tilt at a certain angle around the rotating shaft as the center of rotation, maintain the tilted state for a period of time, and then rotate back to the horizontal state. Then the above actions are repeated. During this process, the screen frame will follow the frame plate, that is, the screen frame first vibrates horizontally to screen, then tilts to pour out larger coal powder particles, and finally returns to the horizontal state.

[0018] This application, through the mechanical cooperation between the rotating shaft, transmission structure, linkage structure, vibration component, and adjustment component, not only ensures that the screen frame is always in a vibrating screening state, but also allows the screen frame to first perform horizontal vibration screening to ensure that the coal powder stays on the screen frame for a longer time, making the screening more thorough. Then, the screen frame will tilt at a certain angle to allow large coal powder particles inside to be poured out, avoiding the clogging of the mesh caused by long-term use of large amounts of coal powder, which would lead to a decrease in screening efficiency and also avoid the trouble of cleaning the clogged mesh. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of one embodiment of a pulverized coal separator with physical vibration inversion.

[0020] Figure 2 A cross-sectional view of the collar and connecting rod in one embodiment of a pulverized coal separator subjected to physical vibration inversion.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0023] Figure 5 for Figure 2 Enlarged view of point C.

[0024] Figure 6 This is a partial structural breakdown diagram of one embodiment of a pulverized coal separator subjected to physical vibration inversion.

[0025] Figure 7 This is a schematic diagram of the overall structure of one embodiment of a pulverized coal separator subjected to physical vibration inversion, taken from another perspective.

[0026] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0027] Figure 9 A schematic diagram showing the disassembled adjustment components in one embodiment of a pulverized coal separator subjected to physical vibration inversion.

[0028] In the diagram: 1. Frame; 2. Frame plate; 3. Screen frame; 4. Rotating shaft; 5. Arc-shaped toothed plate; 6. Motor; 7. Double-acting lead screw; 8. Rotating rod; 801. Straight groove; 802. Spiral groove No. 1; 803. Spiral groove No. 2; 9. Sleeve; 10. Collar; 11. Connecting rod; 12. Ball bearing; 13. Gear; 14. Rotating column; 15. Hook spring; 16. Cam; 17. Roller; 18. Transmission wheel No. 1; 19. Transmission wheel No. 2; 20. First belt; 21. Transmission wheel No. 3; 22. Transmission wheel No. 4; 23. Second belt; 24. Support; 25. Feeding hopper; 26. Receiving hopper; 27. Door panel; 28. Guide plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0030] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0031] Please see Figures 1-9 In this embodiment of the invention, a physically vibrating inverted coal powder separator includes a frame 1, a frame plate 2 and a screen frame 3. A rotating shaft 4 is rotatably mounted on the frame 1. The frame plate 2 is horizontally mounted on the frame 1, and one end of the frame plate 2 is rotatably connected to the rotating shaft 4. An arc-shaped toothed plate 5 is provided at the other end of the frame plate 2. An adjustment component is provided on the frame 1. The adjustment component cooperates with the arc-shaped toothed plate 5. When the adjustment component is running, the frame plate 2 will first tilt at a certain angle with the rotating shaft 4 as the rotation center, maintain the tilted state for a period of time, and then rotate back to the horizontal state. One end of the screen frame 3 is rotatably connected to the frame plate 2. A vibration component is provided on the frame plate 2. The vibration component cooperates with the other end of the screen frame 3. When the vibration component is running, the screen frame 3 will vibrate continuously, thereby screening the coal powder. A motor 6 is mounted on the frame 1. The output end of the motor 6 is fixedly connected to one end of the rotating shaft 4. The adjustment component is connected to the rotating shaft 4 through a transmission structure, and the vibration component is connected to the rotating shaft 4 through a linkage structure. When the rotating shaft 4 rotates, the transmission structure and the linkage structure will drive the adjustment component and the vibration component to operate respectively.

[0032] In this scheme, the rotating shaft 4 will rotate under the drive of the motor 6. During the rotation of the rotating shaft 4, the transmission structure will drive the adjustment component to operate, and the linkage structure will drive the vibration component to operate synchronously. Since the screen frame 3 is set horizontally, and one end is rotatably connected to the frame plate 2, and the other end is engaged with the vibration component, the screen frame 3 will vibrate continuously when the vibration component is running, thereby screening the coal powder inside. Since one end of the frame plate 2 is rotatably connected to the rotating shaft 4, and the arc-shaped toothed plate 5 fixed to the other end of the frame plate 2 is engaged with the adjustment component, when the adjustment component is running, the frame plate 2 will first tilt at a certain angle with the rotating shaft 4 as the center of rotation, maintain the tilted state for a period of time, and then rotate back to the horizontal state. Then the above actions are repeated. During this process, the screen frame 3 will follow the frame plate 2 to move, that is, the screen frame 3 first vibrates horizontally to screen, then tilts to pour out the larger coal powder particles, and finally returns to the horizontal state.

[0033] In this application, through the mechanical cooperation between the rotating shaft 4, the transmission structure, the linkage structure, the vibration component, and the adjustment component, not only can the screen frame 3 always maintain a vibrating screening state, but the screen frame 3 can also first perform horizontal vibrating screening to ensure that the coal powder stays on the screen frame 3 for a longer time, making the screening more thorough. Then the screen frame 3 will tilt at a certain angle to allow the large coal powder particles inside to be poured out, avoiding the clogging of the mesh caused by the long-term use of a large amount of coal powder, which would lead to a decrease in screening efficiency and also avoid the trouble of cleaning the clogged mesh.

[0034] Please see Figure 2 , Figure 3 and Figure 9 The adjustment assembly includes a bidirectional lead screw 7 and a rotating rod 8, both of which are horizontally rotatably mounted on the frame 1. The outer wall of the bidirectional lead screw 7 is slidably fitted with a sleeve 9, and the sleeve 9 cooperates with the bidirectional lead screw 7. The outer wall of the rotating rod 8 is slidably fitted with a collar 10, and the sleeve 9 and the collar 10 are fixedly connected by a connecting rod 11. The outer wall of the rotating rod 8 is provided with a sliding groove, which includes a straight groove 801, a first spiral groove 802 and a second spiral groove 803. The straight groove 801 is located in the middle section of the rotating rod 8 and is arranged along the length direction of the rotating rod 8. The first spiral groove 802 and the second spiral groove 803 are located at the two ends of the rotating rod 8, and the two ends of the straight groove 801 are connected to the first spiral groove 802 and the second spiral groove 803, respectively. The collar 10 has a ball 12 that is rolled and fitted inside, and the ball 12 is also rolled and fitted inside the first spiral groove 802. A gear 13 is coaxially mounted on the rotating rod 8, and the gear 13 meshes with the arc-shaped toothed plate 5.

[0035] In this embodiment, since the sleeve 9 is slidably sleeved on the outer wall of the bidirectional lead screw 7 and cooperates with the bidirectional lead screw 7, and the collar 10 slidably sleeved on the outer wall of the rotating rod 8 is fixedly connected to the sleeve 9 through the connecting rod 11, the sleeve 9 and the collar 10 can only slide on the bidirectional lead screw 7 and the rotating rod 8 respectively and cannot rotate. Therefore, when the bidirectional lead screw 7 rotates, the sleeve 9 slides horizontally back and forth on the outer wall of the bidirectional lead screw 7, thereby driving the collar 10 to slide horizontally back and forth on the outer wall of the rotating rod 8 through the connecting rod 11. Furthermore, the outer wall of the rotating rod 8 is provided with a sliding groove, which includes a straight groove 801, a first spiral groove 802, and a second spiral groove 803. The straight groove 801 is located in the middle section of the rotating rod 8 and is arranged along the length of the rotating rod 8. The first spiral groove 802 and the second spiral groove 803 are located at both ends of the rotating rod 8, respectively. The two ends of the straight groove 801 are connected to the first spiral groove 802 and the second spiral groove 803, respectively. In addition, the collar 10 has rolling balls 12 inside, which are also rollingly engaged with the first spiral groove 803. Therefore, when the collar 10 slides on the outer wall of the rotating rod 8, the balls 12 will engage with the first spiral groove 802, the straight groove 801, and the second spiral groove 803 respectively; when the balls 12 slide in the first spiral groove 802, the rotating rod 8 will rotate clockwise; when the balls 12 enter the straight groove 801 from the first spiral groove 802, the rotating rod 8 remains stationary; when the balls 12 enter the second spiral groove 803 from the straight groove 801, the rotating rod 8 will rotate counterclockwise. Since a gear 13 is coaxially mounted on the rotating rod 8, and the gear 13 meshes with the arc-shaped toothed plate 5, when the rotating rod 8 rotates forward, the gear 13 will cooperate with the arc-shaped toothed plate 5, thereby causing the frame plate 2 to tilt at a certain angle; when the rotating rod 8 stops rotating, the frame plate 2 remains stationary; when the rotating rod 8 rotates in reverse, the frame plate 2 will rotate back to its original position.

[0036] Please see Figure 4 , Figure 5 and Figure 8 The vibration assembly includes a rotating column 14 and a hook spring 15. The rotating column 14 is horizontally rotatably mounted on the frame plate 2. The two ends of the hook spring 15 are respectively hooked and connected to the other end of the screen frame 3 and the end of the frame plate 2 near the rotating column 14. A cam 16 is provided on the rotating column 14, and a roller 17 is rotatably provided at one end of the cam 16. The bottom of the screen frame 3 is in contact with the cam 16.

[0037] In this embodiment, since the two ends of the hook spring 15 are respectively hooked and connected to the other end of the screen frame 3 and the end of the frame plate 2 near the rotating column 14, and the cam 16 provided on the rotating column 14 is in contact with the bottom of the screen frame 3, and a roller 17 is rotatably provided on one end of the cam 16, when the rotating column 14 rotates, the cam 16 will drive the roller 17 and the hook spring 15 to cooperate with each other to make the screen frame 3 vibrate continuously, thereby screening the coal powder inside.

[0038] Please see Figure 6 and Figure 7 The transmission structure includes a first transmission wheel 18 and a second transmission wheel 19, with the first transmission wheel 18 coaxially mounted on the rotating shaft 4. The second transmission wheel 19 is coaxially mounted on the bidirectional lead screw 7, and the first transmission wheel 18 and the second transmission wheel 19 are connected by the first belt 20.

[0039] In this embodiment, since the first transmission wheel 18 fixed on the rotating shaft 4 and the second transmission wheel 19 fixed on the bidirectional lead screw 7 are connected by the first belt 20, the bidirectional lead screw 7 will rotate when the rotating shaft 4 rotates.

[0040] Please see Figure 5 and Figure 6 The linkage structure includes a third transmission wheel 21 and a fourth transmission wheel 22, with the third transmission wheel 21 coaxially mounted on the rotating shaft 4. The fourth transmission wheel 22 is coaxially mounted on the rotating column 14, and the third transmission wheel 21 and the fourth transmission wheel 22 are connected by a second belt 23.

[0041] In this embodiment, since the No. 3 transmission wheel 21 fixed on the rotating shaft 4 and the No. 4 transmission wheel 22 fixed on the rotating column 14 are connected by the second belt 23, the rotating column 14 will rotate when the rotating shaft 4 rotates.

[0042] Please see Figure 1 and Figure 2 A feeding hopper 25 is provided on the frame 1 via a bracket 24, and the feeding hopper 25 is located above the screen frame 3; The frame 1 is provided with a receiving hopper 26, which is located below the frame plate 2; A door panel 27 is rotatably provided at one end of the screen frame 3, and a guide plate 28 is provided at one end of the frame plate 2.

[0043] In this embodiment, since the feeding hopper 25 is provided on the frame 1 via the bracket 24 and the feeding hopper 25 is located above the screen frame 3, coal powder can be fed into the screen frame 3 through the feeding hopper 25; the coal powder screened by the screen frame 3 will fall into the receiving hopper 26, and the coal powder can be collected at the bottom of the receiving hopper 26; since the door plate 27 is rotatably set at one end of the screen frame 3, when the screen frame 3 is in a horizontal position, the door plate 27 can block the coal powder inside the screen frame 3; when the screen frame 3 is tilted, the door plate 27 will open under the action of gravity to facilitate the pouring out of large coal powder particles; the guide plate 28 is mainly used to guide the poured coal powder.

[0044] A method for separating pulverized coal using a pulverized coal separator with physical vibration inversion as described above includes the following steps: Step 1: Pre-drying. A hot air blower is used to dry the coal powder to be separated. The heat of the hot air is used to evaporate the moisture in the coal powder, reducing the moisture content of the coal powder to about 2%-3%. Step 2: Particle size adjustment. Use a ball mill to grind the raw coal to the set particle size so that the particle size of the coal powder is controlled within a suitable range, so as to ensure the flowability and screening efficiency of the coal powder during the screening process. Step 3: Impurity removal. The coal powder is passed through the magnetic field area generated by the permanent magnet drum separator. Iron impurities are adsorbed on the surface of the magnetic drum and separated. Step 4: Separation process. The coal powder processed above is added into a physically vibrating inverted coal powder separator. Under the action of the physically vibrating inverted coal powder separator, the coal powder is quickly and effectively screened. Step 5: Conveying and storing. The separated coal powder is transported by belt conveyor and stored in a special coal powder silo or tank. Safety facilities such as explosion-proof and fire-proof measures are in place to ensure the safe storage of coal powder.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A physically vibrating inverted coal powder separator, comprising a frame (1), a frame plate (2), and a screen frame (3), characterized in that, A rotating shaft (4) is rotatably mounted on the frame (1), and a frame plate (2) is horizontally mounted on the frame (1). One end of the frame plate (2) is rotatably connected to the rotating shaft (4), and an arc-shaped toothed plate (5) is mounted on the other end of the frame plate (2). An adjustment component is provided on the frame (1). The adjustment component cooperates with the arc-shaped toothed plate (5). When the adjustment component is running, the frame plate (2) will first tilt at a certain angle with the rotating shaft (4) as the rotation center, maintain the tilted state for a period of time, and then rotate back to the horizontal state. One end of the screen frame (3) is rotatably connected to the frame plate (2). A vibration component is provided on the frame plate (2). The vibration component is engaged with the other end of the screen frame (3). When the vibration component is running, the screen frame (3) will vibrate continuously, thereby screening the coal powder. A motor (6) is provided on the frame (1). The output end of the motor (6) is fixedly connected to one end of the rotating shaft (4). The adjustment component is connected to the rotating shaft (4) through a transmission structure. The vibration component is connected to the rotating shaft (4) through a linkage structure. When the rotating shaft (4) rotates, the transmission structure and the linkage structure will drive the adjustment component and the vibration component to run respectively. The adjustment assembly includes a bidirectional lead screw (7) and a rotating rod (8), both of which are horizontally rotatably mounted on the frame (1). The outer wall of the bidirectional lead screw (7) is slidably fitted with a sleeve (9), the sleeve (9) and the bidirectional lead screw (7) cooperate with each other, the outer wall of the rotating rod (8) is slidably fitted with a collar (10), and the sleeve (9) and the collar (10) are fixedly connected by a connecting rod (11). The outer wall of the rotating rod (8) is provided with a sliding groove, which includes a straight groove (801), a first spiral groove (802) and a second spiral groove (803). The straight groove (801) is located in the middle section of the rotating rod (8) and is arranged along the length direction of the rotating rod (8). The first spiral groove (802) and the second spiral groove (803) are located at both ends of the rotating rod (8), and the two ends of the straight groove (801) are connected to the first spiral groove (802) and the second spiral groove (803) respectively.

2. The physically vibrating inverted coal powder separator according to claim 1, characterized in that, The collar (10) has a ball (12) that is rolled and fitted inside, and the ball (12) is also rolled and fitted inside the first spiral groove (802); A gear (13) is coaxially mounted on the rotating rod (8), and the gear (13) meshes with the arc-shaped toothed plate (5).

3. The physically vibrating inverted coal powder separator according to claim 1, characterized in that, The vibration assembly includes a rotating column (14) and a hook spring (15). The rotating column (14) is horizontally rotatably mounted on the frame plate (2). The two ends of the hook spring (15) are respectively hooked and connected to the other end of the screen frame (3) and the end of the frame plate (2) near the rotating column (14). A cam (16) is provided on the rotating column (14), and a roller (17) is rotatably provided at one end of the cam (16). The bottom of the screen frame (3) is in contact with the cam (16).

4. A physically vibrating inverted coal powder separator according to claim 1, characterized in that, The transmission structure includes a first transmission wheel (18) and a second transmission wheel (19), with the first transmission wheel (18) coaxially mounted on the rotating shaft (4); The second drive wheel (19) is coaxially mounted on the bidirectional lead screw (7), and the first drive wheel (18) and the second drive wheel (19) are connected by a first belt (20).

5. A physically vibrating inverted coal powder separator according to claim 3, characterized in that, The linkage structure includes a third transmission wheel (21) and a fourth transmission wheel (22), with the third transmission wheel (21) coaxially mounted on the rotating shaft (4); The fourth drive wheel (22) is coaxially mounted on the rotating column (14), and the third drive wheel (21) and the fourth drive wheel (22) are connected by a second belt (23).

6. A physically vibrating inverted pulverized coal separator according to claim 1, characterized in that, A feeding hopper (25) is provided on the frame (1) via a bracket (24), and the feeding hopper (25) is located above the screen frame (3); A receiving hopper (26) is provided on the frame (1), and the receiving hopper (26) is located below the frame plate (2); A door panel (27) is rotatably provided at one end of the sieve frame (3), and a guide plate (28) is provided at one end of the frame plate (2).

7. A method for separating pulverized coal using a pulverized coal separator with physical vibration inversion as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Pre-drying. A hot air blower is used to dry the coal powder to be separated. The heat of the hot air evaporates the moisture in the coal powder, reducing the moisture content of the coal powder to 2%-3%. Step 2: Particle size adjustment. Use a ball mill to grind the raw coal to the set particle size so that the particle size of the coal powder is controlled within a suitable range, so as to ensure the flowability and screening efficiency of the coal powder during the screening process. Step 3: Impurity removal. The coal powder is passed through the magnetic field area generated by the permanent magnet drum separator. Iron impurities are adsorbed on the surface of the magnetic drum and separated. Step 4: Separation process. The coal powder processed above is added into a physically vibrating inverted coal powder separator. The coal powder is screened under the action of the physically vibrating inverted coal powder separator. Step 5: Conveying and storing. The separated coal powder is conveyed by a belt conveyor and stored in a special coal powder silo or tank.

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