A high-efficiency screen cleaning device for a micro-powder screening machine

Abstract

The utility model discloses a kind of high-efficiency screen cleaning devices of micro-powder screening machine, it is related to material screening technical field.The utility model includes box, cleaning component, feeding hopper, discharge hopper one and discharge hopper two;Box interior is provided with screen and cleaning component, cleaning component includes rotating lever, rotating lever below is fixedly connected with cleaning piece, box top end through type fixedly connected with feeding hopper, box away from the one end of feeding hopper through type fixedly connected with discharge hopper one, box interior is provided with suction port one, box bottom through type fixedly connected with discharge hopper two, discharge hopper two interior is provided with suction port two.The utility model passes through setting cleaning piece, box, feeding hopper, suction port one, fan one, suction port two and fan two, solve the problem that the current micro-powder screening machine screen cleaning device carries out screen cleaning work when affecting screening efficiency, and a large number of dust emission problems when screen cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of material screening technology, and in particular relates to a high-efficiency screen cleaning device for a micro powder screening machine. Background Technology

[0002] A micro powder screening machine is a device that uses a vibrating screen to screen fine powder materials. During operation, the material is fed into the hopper and screened through the screen. Larger particles cannot pass through the screen holes and are discharged from the coarse material outlet along the screen surface. After grinding and crushing, the material is screened again. Fine particles pass through the screen holes and are discharged from the fine material outlet into the next processing machine. When screening ultrafine powders, due to the small size and surface agglomeration of the powder particles, the screen holes are easily covered by impurities, leading to a decrease in production capacity or even shutdown. The screen cleaning device of the micro powder screening machine is mainly used to solve the common clogging problem during the screening process, keep the screen unobstructed, and ensure screening efficiency and product quality. Currently, the mainstream micro powder screening machine screen cleaning devices on the market still have the following problems in use: Currently, the mainstream screen cleaning devices on the market generally use bouncing balls to bounce and collide with the screen, squeezing out the blocked material from the screen holes to achieve the purpose of screen cleaning. This screen cleaning method is only suitable for screening large particles. When cleaning the screen for micro powder screening, because the screen holes are small and the bouncing balls themselves have a certain volume, they may block some of the screen holes, resulting in a reduction in material screening efficiency. When cleaning the screen, it is necessary to push the material blocking the screen holes and the material on the screen to clear the blockage. The movement of these materials will generate a lot of dust. The dust will be discharged from the coarse material outlet and the fine material outlet, polluting the external environment and affecting the health of the operators. To address these issues, we provide a high-efficiency screen cleaning device for micro powder screening machines. Utility Model Content

[0003] The purpose of this utility model is to provide a high-efficiency screen cleaning device for a micro powder screening machine. By setting up a cleaning component, a box, a feeding hopper, a first air inlet, a first fan, a second air inlet, and a second fan, it solves the problem of the existing micro powder screening machine screen cleaning device affecting screening efficiency during screen cleaning, as well as the problem of a large amount of dust being emitted during screen cleaning.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a high-efficiency screen cleaning device for a micro powder screening machine, including a box, a cleaning component, a feeding hopper, a discharge hopper one, and a discharge hopper two; an inclined screen is fixedly connected inside the box, and a cleaning component is arranged inside the box above the screen. The cleaning component includes a rotating rod, and a cleaning part is fixedly connected below the rotating rod. The brush of the cleaning part is in contact with the inclined surface of the screen. During material screening, the material is fed into the feeding hopper. Fine particles pass through the screen holes and enter the material collection equipment from the discharge hopper two. Large particles follow the screen surface and enter the grinding equipment from the discharge hopper one. After grinding, the screening process is repeated. When the screen holes become clogged, the cleaning component moves along the inclined surface of the screen. The brush on the cleaning component brushes out the clogged material in the screen holes and turns the material over, making it easier for small particles to pass through the screen holes and carrying large particles towards the discharge hopper one, thus accelerating the screening efficiency. A feeding hopper is fixedly connected to one side of the top of the box. A discharge hopper is fixedly connected to the lower part of the box away from the feeding hopper. An air intake is fixedly connected to the inside of the box near the discharge hopper. A discharge hopper is fixedly connected to the bottom of the box. An air intake is fixedly connected to the inside of the discharge hopper near its discharge port. When the dust generated during screening and screen cleaning moves towards discharge hopper one and discharge hopper two, it is sucked out by suction port one and suction port two and enters the dust collection and treatment device.

[0005] Furthermore, the boxes at both ends of the rotating rod are provided with grooves at the same angle as the screen inclination. Sliding blocks that are slidably connected to the rotating rod are slidably connected inside the grooves. Limiting grooves are provided inside the boxes at the higher and lower ends of the grooves. Limiting blocks are fixedly connected to the higher and lower ends of the sliding blocks. The limiting blocks and the adjacent limiting grooves are slidably connected. By sliding the sliding blocks along the grooves, the rotating rod and the cleaning components can be driven to move, thus performing the screen cleaning operation.

[0006] Furthermore, a threaded rod is rotatably connected inside one of the chutes, the threaded rod threaded through a slider adjacent to it, a power motor is fixedly connected to the outer end wall of the box near the feeding hopper, the output shaft of the power motor is drivenly connected to the end of the threaded rod adjacent to it, and a limit rod is fixedly connected inside the other chutes, the limit rod passes through a slider adjacent to it and is slidably connected to the slider. When the power motor is started, the output shaft of the power motor rotates, which drives the threaded rod to rotate. Under the limit of the limit rod and the connection of the rotating rod, the two sliders will slide together along the slide groove to perform the screen cleaning work.

[0007] Furthermore, L-shaped baffles are symmetrically arranged between the two sliders located between the rotating rod and the power motor. The horizontal part of the baffle is fixedly connected to the slider adjacent to it. L-shaped mounting plates with the same tilt angle as the screen are fixedly connected to the inner side wall of the box below the slide groove. Mounting ears are fixedly connected to both ends of the cleaning component near the bottom. During the screen cleaning process, the baffle bar blocks the cleaning component, preventing it from rotating due to excessive resistance caused by material accumulation. The L-shaped design of the baffle bar and the mounting ear ensures that they do not interfere with each other. When the cleaning component moves to the lower part, the rotating rod rotates, causing the mounting ear to mount on the mounting plate. Subsequently, the output shaft of the power motor rotates in the opposite direction. Under the support of the mounting plate, the brush of the cleaning component will not contact the screen, preventing the material from moving in the opposite direction during the reset process. When the rotating rod moves near the power motor, the mounting ear detaches from the mounting plate and resets under the action of gravity.

[0008] Furthermore, a magnetic block is provided inside the box located between the mounting plate and the air inlet, and a cylinder is fixedly connected to the top of the box. The piston rod of the cylinder's extension end passes downward through the box and is fixedly connected to the magnetic block. The cleaning component is made of metal. When the cleaning component moves to the lower part, the magnetic block attracts the cleaning component, causing it to rotate around the center line of the rotating rod towards the magnetic block. The cylinder is activated, and the magnetic block moves upward, driving the cleaning component to rotate continuously. When the mounting ear is higher than the mounting plate, the power motor starts, causing the cleaning component to move towards the power motor. Due to the attraction of the magnetic block, the mounting ear will mount on the mounting plate during the movement.

[0009] Furthermore, an inspection port is provided through the top of the box between the feeding hopper and the cylinder. A cover hinged to the box is provided in the inspection port. A sealing strip is provided inside the groove on the side of the threaded rod near the limiting rod. The sealing strip is fixed to the box by screw thread. When cleaning the screen, open the cover, remove the seal from the inspection port, and then close the cover to begin cleaning. If cleaning is not required, install and fix the seal to prevent dust from entering the groove and affecting the accuracy of the threaded rod.

[0010] Furthermore, a blower is fixedly connected to the end wall of the box above the discharge hopper, and the air intake end of the blower and the air outlet end of the air inlet are fixedly connected in a through manner. A blower is fixedly connected to the side of the discharge hopper away from the discharge hopper, and the air intake end of the blower and the air outlet end of the air inlet are fixedly connected in a through manner. Both the air outlets of fan one and fan two are connected to external dust collection and treatment equipment. When fan one and fan two are started, they work to draw the dust out through air inlet one and air inlet two, and then into the dust collection and treatment equipment for processing before being discharged.

[0011] Furthermore, a bracket is fixedly connected to the lower part of the periphery of the box, and a vibration motor is fixedly connected to both sides of the box; The support frame provides support for the entire device. When screening is in progress, the vibrating motor is started, and the vibration is transmitted to the screen to speed up the screening rate.

[0012] This utility model has the following beneficial effects: This invention solves the problem of reduced screening efficiency during screen cleaning by incorporating a cleaning component. The cleaning component moves along the upper inclined surface of the screen, cleaning and removing the material clogging the screen holes while simultaneously tumbling the material. Small particles can pass through the screen holes more easily, and the cleaning component also carries larger particles towards the discharge hopper, accelerating the discharge of large particles and achieving the goal of improving screening efficiency while cleaning the screen.

[0013] This utility model solves the problem of dust dispersion by setting up a box, a feeding hopper, a first suction port, a first fan, a second suction port, and a second fan. The screen cleaning work is carried out inside the box. Because the feeding hopper is high, no dust will escape from the feeding hopper. When the screen cleaning work is carried out, the first and second fans are started. When the dust is about to escape through the first discharge hopper, the first fan sucks the dust out from the first suction port and collects it for treatment. When the dust is about to escape through the second discharge hopper, the second fan sucks the dust out from the second suction port and collects it for treatment, thus achieving the purpose of preventing dust from escaping into the air.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a high-efficiency screen cleaning device for a micro powder screening machine.

[0017] Figure 2 for Figure 1 A cross-sectional view.

[0018] Figure 3 for Figure 2 A schematic diagram of the structure after the seal is installed.

[0019] Figure 4 for Figure 2 A schematic diagram of the structure after removing the screen and cleaning components.

[0020] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0021] Figure 6 This is a schematic diagram of the cleaning component.

[0022] The attached diagram lists the components represented by each number as follows: 1. Housing; 101. Bracket; 102. Vibration motor; 103. Inspection port; 104. Cover; 105. Slide groove; 1051. Limiting groove; 1052. Seal; 106. Mounting plate; 107. Screen; 108. Magnetic block; 1081. Cylinder; 2. Cleaning assembly; 201. Rotating rod; 202. Cleaning component; 2021. Mounting ear; 203. Slider; 2031. Limiting block; 2032. Stop bar; 204. Threaded rod; 2041. Power motor; 205. Limiting rod; 3. Feeding hopper; 4. Discharge hopper one; 401. Suction port one; 402. Fan one; 5. Discharge hopper two; 501. Suction port two; 502. Fan two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0024] Please see Figure 1-4 This utility model is a high-efficiency screen cleaning device for a micro powder screening machine, including a box 1, a cleaning component 2, a feeding hopper 3, a discharge hopper 1 4, and a discharge hopper 2 5; an inclined screen 107 is fixedly connected inside the box 1, and a cleaning component 2 is set inside the box 1 above the screen 107. The cleaning component 2 includes a rotating rod 201, and a cleaning element 202 is fixedly connected below the rotating rod 201. The brush of the cleaning element 202 is attached to the inclined surface of the screen 107. A feeding hopper 3 is fixedly connected through one side of the top of the box 1, a discharge hopper 1 4 is fixedly connected through the lower part of the end of the box 1 away from the feeding hopper 3, and a discharge hopper 2 5 is fixedly connected through the bottom of the box 1. During material screening, the material is added from the feeding hopper 3. Under the action of gravity, fine particles pass through the screen holes of the screen 107 and enter the material collection equipment from the discharge hopper 2 5. Large particles follow the screen surface of the screen 107 and enter the grinding equipment from the discharge hopper 1 4. After grinding, the screening process is repeated. When the screen holes of the screen 107 become clogged, the cleaning component 202 moves along the inclined surface of the screen 107. The brush on the cleaning component 202 brushes out the material blocking the screen holes and turns the material, making it easier for small particles to pass through the screen holes and carrying large particles towards the discharge hopper 1 4, thus accelerating the screening efficiency.

[0025] Among them, such as Figure 2-6As shown, the box 1 located at both ends of the rotating rod 201 has a sliding groove 105 with the same inclination angle as the screen 107. The sliding groove 105 is slidably connected to a slider 203 that is rotatably connected to the rotating rod 201. The box 1 located at the higher and lower ends of the sliding groove 105 has a limiting groove 1051. The higher and lower ends of the slider 203 are fixedly connected to a limiting block 2031. The limiting block 2031 and the limiting groove 1051 adjacent to it are slidably connected. The limiting block 2031 restricts the movement of the slider 203, so that the slider 203 can only move along the slide groove 105. By sliding the slider 203 along the slide groove 105, the rotating rod 201 and the cleaning component 202 can be driven to move to perform the screen cleaning work.

[0026] Among them, such as Figure 2-6 As shown, a threaded rod 204 is rotatably connected inside one of the slide grooves 105. The threaded rod 204 passes through the adjacent slider 203. A power motor 2041 is fixedly connected to the outer end wall of the housing 1 near the feeding hopper 3. The output shaft of the power motor 2041 is connected to the end of the threaded rod 204. A limit rod 205 is fixedly connected inside the other slide groove 105. The limit rod 205 passes through the adjacent slider 203 and is slidably connected to the slider 203. When the power motor 2041 is started, the output shaft of the power motor 2041 rotates, which drives the threaded rod 204 to rotate. Under the limit of the limit rod 205 and the connection of the rotating rod 201, the two sliders 203 will slide together along the slide groove 105 to perform the screen cleaning work.

[0027] Among them, such as Figure 2-4 , Figure 6 As shown, L-shaped baffles 2032 are symmetrically arranged between the two sliders 203 located between the rotating rod 201 and the power motor 2041. The horizontal part of the baffle 2032 is fixedly connected to the slider 203 adjacent to it. L-shaped mounting plates 106 with the same inclination angle as the screen 107 are fixedly connected to the inner side wall of the box 1 located below the slide groove 105. Mounting ears 2021 are fixedly connected to both ends of the cleaning part 202 near the bottom. During the cleaning process, the slider 203 moves along the slide groove 105 from its higher end to its lower end. The cleaning component 202 moves along with the slider 203. During this movement, the baffle 2032 blocks the cleaning component 202, preventing it from rotating due to excessive resistance caused by material accumulation. The L-shaped arrangement of the baffle 2032 and the mounting lug 2021 in different directions ensures that the baffle 2032 will not collide with the mounting plate 106 as it moves with the slider 203. When component 202 moves to the lower part, the rotating rod 201 rotates, causing the mounting ear 2021 to mount on the mounting plate 106. Subsequently, the output shaft of the power motor 2041 rotates in the opposite direction. With the mounting plate 106, the brush of the cleaning component 202 will not contact the screen 107, preventing the cleaning component 202 from causing the material to move in the opposite direction during the reset process. When the rotating rod 201 moves to the vicinity of the power motor 2041, the mounting ear 2021 disengages from the mounting plate 106 and rotates to reset under the action of gravity.

[0028] Among them, such as Figure 2-4 As shown, a magnetic block 108 is provided inside the box 1 located between the mounting plate 106 and the air intake 401. A cylinder 1081 is fixedly connected to the top of the box 1. The piston rod of the telescopic end of the cylinder 1081 passes through the box 1 downward and is fixedly connected to the magnetic block 108. The cleaning component 202 is made of metal. When the cleaning component 202 moves to the lower part, the magnetic block 108 attracts the cleaning component 202, causing the cleaning component 202 to rotate around the center line of the rotating rod 201 toward the magnetic block 108. The cylinder 1081 is activated, and the magnetic block 108 moves upward, driving the cleaning component 202 to rotate continuously. When the mounting ear 2021 is higher than the mounting plate 106, the power motor 2041 is activated, causing the cleaning component 202 to move toward the power motor 2041. Due to the attraction of the magnetic block 108, the mounting ear 2021 will mount on the mounting plate 106 during the movement.

[0029] Among them, such as Figure 2-4 As shown, a maintenance port 103 is provided through the top of the box 1 located between the feeding hopper 3 and the cylinder 1081. A cover 104 is provided inside the maintenance port 103 and is hinged to the box 1. A sealing strip 1052 is provided inside the slide groove 105 located on the side of the threaded rod 204 near the limit rod 205. The sealing strip 1052 is fixed to the box 1 by screw thread. When a problem occurs inside the device, the cover 104 can be opened to access the inspection port 103 for maintenance. When cleaning the screen, the cover 104 can be opened, the seal 1052 can be removed from the inspection port 103, and the cover 104 can be closed to perform the screen cleaning. When screen cleaning is not required, the seal 1052 can be installed and fixed to prevent dust from entering the slide groove 105 and affecting the accuracy of the threaded rod 204.

[0030] Among them, such as Figure 1As shown, a bracket 101 is fixedly connected to the lower part of the periphery of the box body 1, and a vibration motor 102 is fixedly connected to both sides of the box body 1. The support frame 101 provides support for the entire device. When screening is performed, the vibration motor 102 is started. The vibration motor 102 vibrates and transmits the vibration to the screen 107, thereby accelerating the screening rate of the material.

[0031] The working principle of this embodiment is as follows: When performing material screening, the material is added from the feeding hopper 3, and the vibration motor 102 is started. The vibration motor 102 vibrates and transmits the vibration to the screen 107. Under the vibration of the screen 107, fine particles pass through the screen holes of the screen 107 and enter the material collection equipment from the discharge hopper 2 5. Large particles follow the mesh surface of the screen 107 and enter the grinding equipment from the discharge hopper 1 4. After grinding, the screening process is repeated. When the screen holes of the screen 107 become blocked, the cover 104 is opened, the seal 1052 is removed from the inspection port 103, and the cover 104 is closed. The power motor 2041 is started, causing the cleaning part 202 to move towards the power motor 2041. When the rotating rod 201 moves to the vicinity of the power motor 2041, the mounting ear 2021 disengages from the mounting plate 106 and rotates back to its original position under the action of gravity. After resetting, the output shaft of the power motor 2041 rotates, driving the threaded rod 204 to rotate. With the limit switch 05 and the connection of the rotating rod 201, the two sliders 203 will slide together along the slide groove 105 from the higher end to the lower end. The cleaning part 202 moves from top to bottom along the inclined surface of the screen 107. The brush on the cleaning part 202 brushes out the material blocking the screen hole and turns the material, making it easier for small particles to pass through the screen hole and carrying large particles to the discharge hopper 4, thus speeding up the screening efficiency. When the cleaning part 202 moves to the lower part, the rotating rod 201 rotates, so that the mounting ear 2021 is mounted on the mounting plate 106. Then the output shaft of the power motor 2041 rotates in the opposite direction. With the mounting plate 106, the brush of the cleaning part 202 will not contact the screen 107, preventing the cleaning part 202 from causing the material to move in the opposite direction during the reset process. When the rotating rod 201 moves to the vicinity of the power motor 2041, the mounting ear 2021 disengages from the mounting plate 106 and rotates to reset under the action of gravity. Specific Implementation Example 2

[0032] Please see Figure 2-4 Based on the first specific embodiment, an air intake 401 is fixedly connected inside the box 1 near the discharge hopper 4, and an air intake 501 is fixedly connected inside the discharge hopper 5 near its discharge port.

[0033] Among them, such as Figure 2-4As shown, a blower 402 is fixedly connected to the end wall of the box 1 above the discharge hopper 4. The suction end of the blower 402 and the outlet end of the air inlet 401 are fixedly connected in a through manner. A blower 502 is fixedly connected to the side of the discharge hopper 5 away from the discharge hopper 4. The suction end of the blower 502 and the outlet end of the air inlet 501 are fixedly connected in a through manner.

[0034] The working principle of this embodiment is as follows: When cleaning the screen, start the first fan 402 and the second fan 502. When the dust generated during the cleaning process moves towards the first discharge hopper 4 and the second discharge hopper 5, the first fan 402 and the second fan 502 work to suck the dust out through the first suction port 401 and the second suction port 501, and then into the dust collection and treatment equipment for processing before being discharged.

[0035] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A high-efficiency screen cleaning device for a micro powder screening machine, comprising a housing (1), a cleaning assembly (2), a feeding hopper (3), a first discharge hopper (4), and a second discharge hopper (5); characterized in that: An inclined screen (107) is fixedly connected inside the box (1). A cleaning assembly (2) is provided inside the box (1) above the screen (107). The cleaning assembly (2) includes a rotating rod (201). A cleaning component (202) is fixedly connected below the rotating rod (201). The brush of the cleaning component (202) is in contact with the inclined surface of the screen (107). A feeding hopper (3) is fixedly connected to one side of the top of the box (1). A discharge hopper (4) is fixedly connected to the lower part of the box (1) away from the feeding hopper (3). An air intake (401) is fixedly connected to the inside of the box (1) near the discharge hopper (4). A discharge hopper (5) is fixedly connected to the bottom of the box (1). An air intake (501) is fixedly connected to the inside of the discharge hopper (5) near its discharge port.

2. The high-efficiency screen cleaning device for a micro powder sieving machine according to claim 1, characterized in that: Inside the housing (1) located at both ends of the rotating rod (201), there is a sliding groove (105) with the same inclination angle as the screen (107). Inside the sliding groove (105), there is a slider (203) that is slidably connected to the rotating rod (201). Inside the housing (1) located at the higher and lower ends of the sliding groove (105), there is a limiting groove (1051). The higher and lower ends of the slider (203) are fixedly connected to limiting blocks (2031). The limiting blocks (2031) and the limiting grooves (1051) adjacent to them are slidably connected.

3. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 2, characterized in that: One of the slides (105) is rotatably connected to a threaded rod (204), the threaded rod (204) threaded through a slider (203) nearby. A power motor (2041) is fixedly connected to the outer wall of the housing (1) near the feeding hopper (3). The output shaft of the power motor (2041) is connected to the end of the threaded rod (204) nearby. Another slide (105) is fixedly connected to a limit rod (205), the limit rod (205) through a slider (203) nearby and slidably connected to the slider (203).

4. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 3, characterized in that: L-shaped baffles (2032) are symmetrically arranged between the two sliders (203) located between the rotating rod (201) and the power motor (2041). The horizontal part of the baffle (2032) and the slider (203) adjacent to it are fixedly connected. L-shaped mounting plates (106) with the same inclination angle as the screen (107) are fixedly connected to the inner side wall of the box (1) located below the slide groove (105). Mounting ears (2021) are fixedly connected to both ends of the cleaning component (202) near the bottom.

5. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 4, characterized in that: A magnetic block (108) is provided inside the box (1) located between the mounting plate (106) and the air inlet (401). A cylinder (1081) is fixedly connected to the top of the box (1). The piston rod of the extension end of the cylinder (1081) passes through the box (1) downward and is fixedly connected to the magnetic block (108).

6. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 5, characterized in that: The top of the box (1) located between the feeding hopper (3) and the cylinder (1081) is provided with an inspection port (103). The inspection port (103) is provided with a cover (104) that is hinged to the box (1). The groove (105) located on the side of the threaded rod (204) near the limiting rod (205) is provided with a sealing strip (1052). The sealing strip (1052) is fixed to the box (1) by screw thread.

7. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 1, characterized in that: A blower (402) is fixedly connected to the end wall of the box (1) above the discharge hopper (4). The suction end of the blower (402) and the outlet end of the air inlet (401) are fixedly connected in a through manner. A blower (502) is fixedly connected to the side of the discharge hopper (5) away from the discharge hopper (4). The suction end of the blower (502) and the outlet end of the air inlet (501) are fixedly connected in a through manner.

8. The high-efficiency screen cleaning device for a micro powder screening machine according to claim 1, characterized in that: A bracket (101) is fixedly connected to the lower part of the periphery of the box (1), and a vibration motor (102) is fixedly connected to both sides of the box (1).

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