An environmentally friendly gravity-based automatic material distribution device for vibrating screens

Abstract

This invention discloses an environmentally friendly gravity-driven automatic material leveling device for vibrating screens, relating to the field of environmentally friendly vibrating screen technology. It includes a fixed frame, with a feed inlet and a vibrating screen mounted on the upper end of one side of the fixed frame. The lower end of the feed inlet is connected to the upper end of the vibrating screen. An excitation motor is installed on the side wall of the vibrating screen. A distribution bin and a blower are installed on the upper end of the other side of the fixed frame. Under the action of the blower, the airflow follows the direction of the feed inlet, connecting pipe, and distribution bin, preventing large particles from flowing back into the second feeding channel. This allows for further processing at the feed and discharge points of the vibrating screen. The rotating hopper covers the material at the bottom of the two hoppers, preventing the material from being absorbed by the airflow and reaching the blower. It further separates small and large particles on the surface of the material conveyor belt, ensuring that the material on the conveyor belt is screened more evenly.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly vibrating screen technology, specifically to an environmentally friendly vibrating screen gravity automatic material leveling device. Background Technology

[0002] Environmentally friendly vibrating screens are a new type of screening equipment that achieves material classification in a fully sealed structure. Simultaneously, through technologies such as negative pressure dust removal, energy-saving design, and low-noise reduction, they minimize dust, noise, and energy pollution. They are used in the mining and gravel industry for dry screening of aggregates, manufactured sand, and tailings; in the coal / coke industry for raw coal classification and desulfurization agent screening; in the chemical / pharmaceutical industry for screening starch, flour, pigments, and raw pharmaceutical materials; and in the building materials industry for screening cement, fly ash, and quartz sand. In the existing technology, environmentally friendly vibrating screens have certain drawbacks. If an environmentally friendly vibrating screen relies solely on a single vibrator to provide the vibration source, it is very easy for uneven material screening to occur. A single excitation force can easily cause both large and small particles to fall into the feed inlet of the vibrating screen, resulting in material accumulation at the vibrating screen. Using only a vibrator lacks gravity assistance, and the inlet and outlet of the vibrating screen can easily cause some large and small particles to mix together. Summary of the Invention

[0003] The purpose of this invention is to provide an environmentally friendly gravity-driven automatic material distribution device for vibrating screens, so as to solve the problems mentioned in the background art.

[0004] The objective of this invention can be achieved through the following technical solutions: An environmentally friendly gravity-driven automatic material leveling device for a vibrating screen includes a fixed frame. A feed inlet and a vibrating screen are located on the upper end of one side of the fixed frame. The lower end of the feed inlet is connected to the upper end of the vibrating screen. An excitation motor is installed on the side wall of the vibrating screen. A distribution bin and a blower are installed on the upper end of the other side of the fixed frame. The bottom end of the vibrating screen is connected to the side wall of the distribution bin. A connecting pipe and a primary material screening assembly are arranged vertically between the feed inlet and the distribution bin. The blower, distribution bin, connecting pipe, and feed inlet are internally connected. The primary material screening assembly includes a first counter-current channel and a first feeding channel, both located inside the feed inlet. One end of the feed inlet, the first counter-current channel, the first feeding channel, and the connecting pipe are internally connected to the distribution bin. The blower draws in and screens a portion of the material in the first counter-current channel.

[0005] As a preferred embodiment of the present invention, a fixed rod is installed inside the feed inlet, and a baffle plate is sleeved on the outside of the fixed rod. The baffle plate is used to block the material in the feed inlet. The baffle plate rotates synchronously with the fixed rod. A toggle handle is installed at the end of the fixed rod and on the side wall of the feed inlet. The outside of the toggle handle is rotatably connected to the two side walls of the feed inlet. The toggle handle is used to close and open the baffle plate. A discharge port is opened at the bottom of the feed inlet.

[0006] As a preferred technical solution of the present invention, the first feeding channel, the first countercurrent channel and the internal space of the inlet are arranged in an S-shape. The airflow in the first countercurrent channel is used to suck up the small and light material in the first countercurrent channel and the large and heavy material in the discharge port. The material inside the connecting pipe slides downward at an angle under the action of the excitation motor.

[0007] As a preferred embodiment of the present invention, a second countercurrent channel and a second feeding channel are provided at the connection between the connecting pipe and the distribution bin. The bottom end of the vibrating screen is connected to the second feeding channel. The interior of the distribution bin, the second feeding channel, and the second countercurrent channel are connected. The airflow in the second countercurrent channel is used to suck up small and light materials and large and heavy materials in the vibrating screen and the connecting pipe. The material inside the second feeding channel is sucked into the distribution bin by the blower.

[0008] As a preferred embodiment of the present invention, a material cleaning assembly is provided at the bottom of the material distribution bin. The material cleaning assembly includes a first hopper and a second hopper, both of which are welded to the bottom of the material distribution bin. A drive assembly and a fixed shaft are respectively provided at the bottom of the material distribution bin and at the first and second hoppers. The two sets of drive assemblies are used to drive the fixed shafts. Rotating hoppers are installed outside the two sets of fixed shafts. The two sets of rotating hoppers are located inside the first hopper and the second hopper, respectively. The two sets of rotating hoppers are used to collect the waste material inside the first and second hoppers.

[0009] As a preferred embodiment of the present invention, a feeding box is installed on the side wall of the material distribution bin and at the bottom of the first hopper and the second hopper. A closing cover is installed inside the two feeding boxes and at the end of the rotating hopper. The closing cover is used to close and open the end of the rotating hopper.

[0010] As a preferred embodiment of the present invention, the drive assembly includes a motor, a transmission belt, and pulleys. The motor is fixed to one of the pulleys, and the end of the fixed shaft is fixed to the other pulley. The motor drives the transmission belt and pulleys to rotate. One end of each of the two sets of rotating hoppers is rotatably connected to the first hopper and the second hopper, respectively. The rotating hoppers rotate synchronously with the fixed shaft. Limiting rings are welded to the bottom of the first hopper and the second hopper. The limiting rings are used to limit the rotating hoppers.

[0011] As a preferred embodiment of the present invention, the upper part of the first hopper is close to the end of the second feeding channel. The airflow in the distribution bin is used to drop small and light materials into the second hopper, while the airflow in the distribution bin drops large and heavy materials into the first hopper.

[0012] As a preferred embodiment of the present invention, a material conveyor belt is provided inside the fixed frame and below the material distribution bin. A material suction component is provided between the material conveyor belt and the material distribution bin. The material suction component includes a windproof cover, which is installed on the upper outside of the material conveyor belt and fixed to the fixed frame. A connecting air pipe is connected between the material distribution bin and the windproof cover.

[0013] As a preferred technical solution of the present invention, the side wall of the material distribution bin and the top of the windproof cover are provided with connection holes. The material conveyor belt rotates and drives the lightweight material to be conveyed synchronously. The blower works to adsorb the lightweight material on the surface of the material conveyor belt into the interior of the material distribution bin.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Equipped with a material primary screening component, the airflow, driven by the blower, flows along the feed inlet, connecting pipe, and distribution bin. The first counter-current channel and the first feeding channel separate large and small particles, preventing large particles from flowing back into the first counter-current channel. During vibration, the material slides along the connecting pipe. The second feeding channel and the second counter-current channel also separate small and large particles, preventing large particles from flowing back into the second feeding channel. This allows for further processing at the feed and discharge points of the vibrating screen, resulting in more uniform material screening. Equipped with a material cleaning component, the first hopper can collect large particles from the second feeding channel under the action of the blower, and the second hopper can collect small particles from the second feeding channel. It can also cover the material at the bottom of the two hoppers covered by the rotating hopper, and prevent the material from being sucked up to the blower by the airflow under the action of the airflow. Equipped with a material suction component, the material enters the distribution bin through the connecting air pipe under the action of the blower, thereby further screening small and large particles on the surface of the material conveyor belt and ensuring that the material at the material conveyor belt is screened more evenly. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the main structure of an environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to the present invention; Figure 2 This is a schematic diagram of a vibrating screen, a material distribution bin, and a blower for an environmentally friendly gravity-based automatic material leveling device for a vibrating screen, according to the present invention. Figure 3 This is a schematic diagram of the material primary screening component of an environmentally friendly gravity automatic material leveling device for a vibrating screen according to the present invention. Figure 4 This is a schematic diagram of the first counter-current channel and the first feeding channel of an environmentally friendly gravity automatic material leveling device for a vibrating screen according to the present invention. Figure 5 This is a schematic diagram of the material cleaning component of an environmentally friendly gravity automatic material leveling device for a vibrating screen according to the present invention; Figure 6 This is a schematic diagram of the material suction component of an environmentally friendly gravity-driven automatic material distribution device for a vibrating screen according to the present invention.

[0017] In the diagram: 1. Fixed frame; 2. Feed inlet; 3. Vibrating screen; 4. Excitation motor; 5. Connecting pipe; 6. Material primary screening assembly; 61. Fixed rod; 62. Baffle plate; 63. Toggle handle; 64. Discharge port; 65. First countercurrent channel; 66. First feeding channel; 67. Second countercurrent channel; 68. Second feeding channel; 7. Material cleaning assembly; 71. First hopper; 72. Second hopper; 73. Drive assembly; 74. Fixed shaft; 75. Rotating hopper; 76. Limit ring; 77. Discharge box; 78. Closing cover; 8. Distribution bin; 9. Material suction assembly; 91. Windproof cover; 92. Connecting air pipe; 93. Connecting hole; 10. Material conveyor belt; 11. Blower. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] Example 1:

[0021] Please see Figure 1 - Figure 4As shown, an environmentally friendly gravity-driven automatic material leveling device for a vibrating screen includes a fixed frame 1. A feed inlet 2 and a vibrating screen 3 are located on the upper end of one side of the fixed frame 1. The lower end of the feed inlet 2 is connected to the upper end of the vibrating screen 3. A vibrating motor 4 is installed on the side wall of the vibrating screen 3. A distribution bin 8 and a blower 11 are installed on the upper end of the other side of the fixed frame 1. The bottom end of the vibrating screen 3 is connected to the side wall of the distribution bin 8. Material is fed into the vibrating screen 3 through the feed inlet 2. Larger, heavier materials fall into the vibrating screen 3 through the feed inlet 2. After initial screening inside the feed inlet 2, the material is further separated into different particle sizes using the screens in the vibrating screen 3. The particles are sieved by size, with larger particles located at the upper part of the vibrating screen 3 and smaller particles at the lower part. Larger particles discharged from the vibrating screen 3 are directly discharged to the outside, while smaller particles enter the distribution bin 8. A connecting pipe 5 and a primary material screening assembly 6 are arranged vertically between the feed inlet 2 and the distribution bin 8. The blower 11, distribution bin 8, connecting pipe 5, and feed inlet 2 are internally connected. A filter screen for trapping foreign objects is installed at the air outlet of the blower 11. When the blower 11 is started, it adsorbs small or lightweight materials inside the distribution bin 8, connecting pipe 5, and feed inlet 2. The primary material screening assembly 6 includes a first... The counter-current channel 65 and the first feeding channel 66 are located inside the feed inlet 2. The feed inlet 2, the first counter-current channel 65, the first feeding channel 66, one end of the connecting pipe 5, and the inside of the distribution bin 8 are connected. The blower 11 draws in and screens part of the material in the first counter-current channel 65. The gravity of the material is greater than the suction force at the first counter-current channel 65. Larger particles in the feed inlet 2 fall to the discharge port 64. When the blower 11 is working, it draws in lighter or smaller particles from the feed inlet 2 to the first counter-current channel 65 and the first feeding channel 66, thereby preventing larger particles from being drawn in. Large particles enter the first countercurrent channel 65 and the first feeding channel 66. The vibration of the vibrating screen 3 causes the connecting pipe 5 to vibrate. At this time, the light or small particles inside the connecting pipe 5 slide into the distribution bin 8. The material discharged from the bottom of the vibrating screen 3 enters the second countercurrent channel 67 and the second feeding channel 68. The light or small particles discharged from the vibrating screen 3 are then screened by the second countercurrent channel 67 and the second feeding channel 68, thus screening the material discharged from the vibrating screen 3 again. This ensures that materials with large differences in inclusions after being screened by the vibrating screen can be screened again, and the material can be screened more evenly.

[0022] Please see Figure 1 - Figure 4As shown, a fixing rod 61 is installed inside the feed inlet 2, and a baffle plate 62 is sleeved on the outside of the fixing rod 61. The baffle plate 62 is used to block the material in the feed inlet 2. The baffle plate 62 rotates synchronously with the fixing rod 61. A toggle handle 63 is installed at the end of the fixing rod 61 and on the side wall of the feed inlet 2. Rotating the toggle handle 63 can drive the fixing rod 61 and the baffle plate 62 to rotate. The material at the feed inlet 2 falls from the discharge port 64. The outside of the toggle handle 63 is rotatably connected to the two side walls of the feed inlet 2. The toggle handle 63 is used to close and open the baffle plate 62. The bottom end of the feed inlet 2 has a discharge port 64. The material is placed inside the feed inlet 2. By toggling the toggle handle 63 to open the baffle plate 62, the material falls from the discharge port 64. Under the action of the blower 11, some of the material is sucked into the distribution bin 8 along the first counterflow channel 65 and the first feeding channel 66.

[0023] Please see Figure 3 and Figure 4 As shown, the internal spaces of the first feeding channel 66, the first countercurrent channel 65, and the inlet 2 are arranged in an S-shape. The airflow in the first countercurrent channel 65 is used to suck up small and light materials in the first countercurrent channel 65 and large and heavy materials in the discharge port 64. The materials inside the connecting pipe 5 slide downwards at an angle under the action of the excitation motor 4. Since the internal spaces of the first countercurrent channel 65 and the first feeding channel 66 are arranged in an S-shape, it is possible to prevent heavy or large particles from entering the first countercurrent channel 65 or the first feeding channel 66.

[0024] Please see Figure 3 and Figure 4 As shown, a second countercurrent channel 67 and a second feeding channel 68 are provided at the connection between the connecting pipe 5 and the distribution bin 8. The bottom end of the vibrating screen 3 is connected to the second feeding channel 68. The interior of the distribution bin 8, the second feeding channel 68, and the second countercurrent channel 67 are connected. The airflow in the second countercurrent channel 67 is used to suck up small and light materials and large and heavy materials in the vibrating screen 3 and the connecting pipe 5. The material inside the second feeding channel 68 is sucked into the distribution bin 8 by the blower 11. Specifically, the small and large materials in the vibrating screen 3 are separated. The small material and part of the large material in the vibrating screen 3 are discharged outside the vibrating screen 3, and the other part of the small material in the vibrating screen 3 enters the second countercurrent channel 67. The light material entering the second countercurrent channel 67 is sucked into the second feeding channel 68, and the heavy material entering the second countercurrent channel 67 falls to the bottom of the second countercurrent channel 67 and enters the material conveyor belt 10.

[0025] It should be noted that the material is fed into the vibrating screen 3 through the feed inlet 2. Larger, heavier particles fall into the vibrating screen 3 through the feed inlet 2. After initial screening within the feed inlet 2, the material is further screened according to particle size using the screens in the vibrating screen 3. Larger particles are located at the upper part of the vibrating screen 3 and are discharged directly to the outside of the vibrating screen 3. Smaller particles are located at the lower part of the vibrating screen 3 and enter the distribution bin 8. At this point, preliminary screening can be performed through the connecting pipe 5 and the material primary screening component 6. Specifically, the blower 11 operates to... The airflow flows from the feed inlet 2, connecting pipe 5, and distribution bin 8. Rotating the toggle handle 63 causes the baffle plate 62 and the fixing rod 61 to rotate. At this time, the material falls to the discharge port 64 and the first countercurrent channel 65. The small particles of material in the feed inlet 2 are sucked into the first countercurrent channel 65 and the first feeding channel 66, and slide down from the inside of the connecting pipe 5 to the second feeding channel 68. Thus, the small particles of material at the feed inlet 2 can be adsorbed into the distribution bin 8. The large particles of material at the feed inlet 2 fall from the discharge port 64, and the large particles of material at the second feeding channel 68 fall from the second countercurrent channel 67. The material can be screened more evenly.

[0026] Please see Figure 2 and Figure 5 As shown, a material cleaning assembly 7 is provided at the bottom of the distribution bin 8. The material cleaning assembly 7 includes a first hopper 71 and a second hopper 72, both of which are welded to the bottom of the distribution bin 8. The first hopper 71 is located near the second feeding channel 68, where large particles fall from the second feeding channel 68 into the first hopper 71. The second hopper 72 is located away from the second feeding channel 68, where small particles fall from the second feeding channel 68 into the second hopper 72. A drive assembly 73 and a fixed shaft 74 are respectively provided at the bottom of the distribution bin 8, located at the first hopper 71 and the second hopper 72. The two sets of drive assemblies 73 are used to drive the fixed shaft 74. The rotation of the drive assemblies 73 drives the fixed shaft 74 to rotate. When component 73 operates, it causes the fixed shaft 74 to rotate, which in turn rotates the rotating hopper 75. The rotating hoppers 75 inside the first hopper 71 and the second hopper 72 can rotate. The rotating hoppers 75 are installed on the outside of the two sets of fixed shafts 74. The two sets of rotating hoppers 75 are located inside the first hopper 71 and the second hopper 72, respectively. The two sets of rotating hoppers 75 are used to collect waste materials inside the first hopper 71 and the second hopper 72. The drive component 73 drives the fixed shaft 74 to rotate, which can make the rotating hoppers 75 rotate synchronously. Lighter materials inside the distribution bin 8 can fall into the two rotating hoppers 75, larger materials fall into the first hopper 71, and smaller materials fall into the second hopper 72.

[0027] Please see Figure 5 As shown, a feeding box 77 is installed on the side wall of the distribution bin 8 and at the bottom of the first hopper 71 and the second hopper 72. A closing cover 78 is installed inside the two feeding boxes 77 and at the end of the rotating hopper 75. The closing cover 78 is used to close and open the end of the rotating hopper 75, so that the material falling into the distribution bin 8 can be restricted by the rotating hopper 75. Specifically, the material slides along the first hopper 71 and the second hopper 72. At this time, the rotating hopper 75 is slowly rotated, and the arc of the rotating hopper 75 faces the bottom of the first hopper 71 and the second hopper 72, so that the material inside the first hopper 71 and the second hopper 72 can be collected. When the blower 11 stops working, the blower 11 drops the light material from the second feeding channel 68 to the two rotating hoppers 75. Then the material is concentrated in the rotating hoppers 75, and the closing cover 78 at the feeding box 77 is opened to clean the material in the rotating hopper 75 through the closing cover 78.

[0028] Please see Figure 5 As shown, the drive assembly 73 includes a motor, a transmission belt, and pulleys. The motor is fixed to one of the pulleys, and the end of the fixed shaft 74 is fixed to the other pulley. The motor drives the transmission belt and pulleys to rotate, and the rotation of the motor drives one of the pulleys to rotate, thus driving both pulleys by the transmission belt. The other pulley drives the fixed shaft 74 to rotate. One end of each of the two sets of rotating hoppers 75 is rotatably connected to the first hopper 71 and the second hopper 72, respectively. The rotating hoppers 75 rotate synchronously with the fixed shaft 74. The motor drives the pulleys and transmission belt, thereby causing the fixed shaft 74 to rotate. The first hopper 71 and the second hopper 72... The bottom of each inner part is welded with a limit ring 76, which is used to limit the rotating hopper 75. Since the pulley drives the fixed shaft 74 to rotate, the rotation of the fixed shaft 74 drives the rotating hopper 75 to rotate. The rotation of the rotating hopper 75 can drop the material into the first hopper 71 and the second hopper 72 inside the distribution bin 8. After the rotating hopper 75 is offset from the first hopper 71 and the second hopper 72, the material can enter the first hopper 71 and the second hopper 72. The rotation of the fixed shaft 74 can drive the rotating hopper 75 to rotate. Then, after opening the closing cover 78, the material can be discharged from the closing cover 78 of the rotating hopper 75.

[0029] Please see Figure 5As shown, the upper part of the first hopper 71 is close to the end of the second feeding channel 68. The airflow in the distribution bin 8 is used to drop small and light materials into the second hopper 72, and the airflow in the distribution bin 8 drops large and heavy materials into the first hopper 71. The material enters the distribution bin 8 from the second feeding channel 68. At this time, small materials can enter the second hopper 72, and materials with a mass greater than the particles enter the first hopper 71. The materials in the first hopper 71 and the second hopper 72 can be taken out from their respective closed covers 78. Small materials are sucked into the second hopper 72 by the suction of the blower 11, and large materials are sucked into the first hopper 71 by the suction of the blower 11.

[0030] It should be noted that under the suction of the blower 11, the larger particles of material in the second feeding channel 68 fall into the second hopper 72. Similarly, under the action of the blower 11, the smaller particles of material in the second feeding channel 68 fall into the first hopper 71. The motor of the drive assembly 73 drives the pulley and the transmission belt to work. The drive assembly 73 drives the fixed shaft 74 and the rotating hopper 75 to rotate. Before the blower 11 works, the hopper 75 can be rotated so that the rotating hopper 75 can cover the material at the bottom of the first hopper 71 and the second hopper 72, so that the material is not sucked away. Then, the material accumulated inside the rotating hopper 75 can be taken out from the end of the rotating hopper 75 after the closing cover 78 is opened.

[0031] Please see Figure 2 and Figure 6 As shown, a material conveyor belt 10 is installed inside the fixed frame 1 and below the distribution bin 8. A material suction assembly 9 is installed between the material conveyor belt 10 and the distribution bin 8. The material suction assembly 9 includes a windproof cover 91, which is installed on the upper exterior of the material conveyor belt 10 and fixed to the fixed frame 1. A connecting air pipe 92 connects the distribution bin 8 and the windproof cover 91. Some material falls from the second countercurrent channel 67 onto the conveyor belt of the material conveyor belt 10. When the blower 11 is working, it can suck up the material inside the distribution bin 8. Similarly, materials smaller than particles on the surface of the material conveyor belt 10 enter the windproof cover 91 along with the conveyor belt. The blower 11 also adsorbs the windproof cover 91. The material is adsorbed into the distribution bin 8 by the connecting air pipe 92, thereby adsorbing the light material into the distribution bin 8 again.

[0032] Please see Figure 6 As shown, the side wall of the material distribution bin 8 and the top of the windproof cover 91 are both provided with connection holes 93. The material conveyor belt 10 rotates and drives the lightweight material to be conveyed synchronously. The blower 11 works to adsorb the lightweight material on the surface of the material conveyor belt 10 into the interior of the material distribution bin 8.

[0033] It should be noted that large particles falling directly from the vibrating screen 3 onto the material conveyor belt 10 are transported along with the material conveyor belt 10. At this time, the material can be transported to a specific position. Since the blower 11 can draw airflow from the distribution bin 8 and the windproof cover 91, it can adsorb some of the small particles on the surface of the material conveyor belt 10. The small particles are sent into the material conveyor belt 10 through the connecting air pipe 92 and can enter the first hopper 71 and the second hopper 72. The material can be screened more evenly.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly gravity-driven automatic material distribution device for a vibrating screen, comprising a fixed frame (1), wherein a feed inlet (2) and a vibrating screen (3) are provided on the upper end of one side of the fixed frame (1), the lower end of the feed inlet (2) is connected to the upper end of the vibrating screen (3), an excitation motor (4) is installed on the side wall of the vibrating screen (3), a distribution bin (8) and a blower (11) are installed on the upper end of the other side of the fixed frame (1), and the bottom end of the vibrating screen (3) is connected to the side wall of the distribution bin (8), characterized in that, A connecting pipe (5) and a material screening assembly (6) are arranged vertically between the feed inlet (2) and the distribution bin (8). The blower (11), the distribution bin (8), the connecting pipe (5) and the feed inlet (2) are internally connected. The material screening assembly (6) includes a first countercurrent channel (65) and a first feeding channel (66). The first countercurrent channel (65) and the first feeding channel (66) are located inside the feed inlet (2). One end of the feed inlet (2), the first countercurrent channel (65), the first feeding channel (66) and the connecting pipe (5) are internally connected to the distribution bin (8). The blower (11) sucks up and screens part of the material in the first countercurrent channel (65).

2. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 1, characterized in that, A fixing rod (61) is installed inside the feed inlet (2), and a baffle plate (62) is sleeved on the outside of the fixing rod (61). The baffle plate (62) is used to block the material in the feed inlet (2). The baffle plate (62) rotates synchronously with the fixing rod (61). A toggle handle (63) is installed at the end of the fixing rod (61) and on the side wall of the feed inlet (2). The outside of the toggle handle (63) is rotatably connected to the two side walls of the feed inlet (2). The toggle handle (63) is used to close and open the baffle plate (62). A discharge port (64) is opened at the bottom of the feed inlet (2).

3. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 2, characterized in that, The first feeding channel (66), the first countercurrent channel (65) and the feed inlet (2) are arranged in an S-shape. The airflow in the first countercurrent channel (65) is used to suck up the small and light material in the first countercurrent channel (65) and the large and heavy material in the feed inlet (64). The material inside the connecting pipe (5) slides downwards at an angle under the action of the vibrating motor (4).

4. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 3, characterized in that, A second countercurrent channel (67) and a second feeding channel (68) are provided at the connection between the connecting pipe (5) and the distribution bin (8). The bottom end of the vibrating screen (3) is connected to the second feeding channel (68). The interior of the distribution bin (8), the second feeding channel (68), and the second countercurrent channel (67) are connected. The airflow in the second countercurrent channel (67) is used to suck up the small and light materials and the large and heavy materials in the vibrating screen (3) and the connecting pipe (5). The material inside the second feeding channel (68) is sucked into the distribution bin (8) by the blower (11).

5. An environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 1 or 4, characterized in that, The bottom of the material distribution bin (8) is provided with a material cleaning component (7). The material cleaning component (7) includes a first hopper (71) and a second hopper (72). The first hopper (71) and the second hopper (72) are both welded to the bottom of the material distribution bin (8). The bottom of the material distribution bin (8) and located at the first hopper (71) and the second hopper (72) are respectively provided with a drive component (73) and a fixed shaft (74). The two sets of drive components (73) are used to drive the fixed shaft (74). Rotating hoppers (75) are installed on the outside of the two sets of fixed shafts (74). The two sets of rotating hoppers (75) are located inside the first hopper (71) and the second hopper (72) respectively. The two sets of rotating hoppers (75) are used to collect the waste material inside the first hopper (71) and the second hopper (72).

6. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 5, characterized in that, The side wall of the material distribution bin (8) and the bottom of the first hopper (71) and the second hopper (72) are each equipped with a feeding box (77). Inside the two feeding boxes (77) and at the end of the rotating hopper (75), a closing cover (78) is installed. The closing cover (78) is used to close and open the end of the rotating hopper (75).

7. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 6, characterized in that, The drive assembly (73) includes a motor, a transmission belt and a pulley. The motor is fixed to one of the pulleys, and the end of the fixed shaft (74) is fixed to the other pulley. The motor drives the transmission belt and pulley to rotate. One end of each of the two sets of rotating hoppers (75) is rotatably connected to the first hopper (71) and the second hopper (72) respectively. The rotating hoppers (75) rotate synchronously with the fixed shaft (74). Limiting rings (76) are welded to the bottom of the inside of the first hopper (71) and the second hopper (72). The limiting rings (76) are used to limit the rotating hoppers (75).

8. The environmentally friendly gravity automatic material leveling device for a vibrating screen according to claim 7, characterized in that, The top of the first hopper (71) is close to the end of the second feeding channel (68). The airflow in the distribution bin (8) is used to drop small and light materials into the second hopper (72), and the airflow in the distribution bin (8) drops large and heavy materials into the first hopper (71).

9. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 8, characterized in that, A material conveyor belt (10) is provided inside the fixed frame (1) and below the distribution bin (8). A material suction assembly (9) is provided between the material conveyor belt (10) and the distribution bin (8). The material suction assembly (9) includes a windproof cover (91). The windproof cover (91) is installed on the upper outside of the material conveyor belt (10) and is fixed to the fixed frame (1). A connecting air pipe (92) is connected between the distribution bin (8) and the windproof cover (91).

10. The environmentally friendly gravity-driven automatic material leveling device for a vibrating screen according to claim 9, characterized in that, The side wall of the material distribution bin (8) and the top of the windproof cover (91) are provided with connection holes (93). The material conveyor belt (10) rotates and drives the lightweight material to be conveyed synchronously. The blower (11) works to adsorb the lightweight material on the surface of the material conveyor belt (10) into the interior of the material distribution bin (8).

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