A building solid waste material screening device

Abstract

The application discloses a kind of building solid waste material screening devices, specifically relates to solid screening technical field, including screening machine, feed hopper and screening cylinder, the top of screening machine is provided with the first discharge opening for the material of screening cylinder interior to discharge, the bottom of screening machine is provided with the second discharge opening for the material to discharge after screening, the inside of screening machine is equipped with the light and heavy screening assembly for the material after screening of screening cylinder is screened again;The application is provided with the light and heavy screening board, screening cylinder and first discharge opening, so that there is height difference between screening cylinder and light and heavy screening board, for extending the path of solid waste falling on the surface of light and heavy screening board, the distance between light and heavy screening board and screening cylinder forms a buffer space, when the airflow blown by air outlet nozzle enters this space, airflow will be buffered and diffused in it, so that light waste is pushed by relatively consistent wind, prevent light waste from remaining in screened material, improve screening efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid screening, in particular to a building solid waste material screening device. BACKGROUND

[0002] With the rapid development of urban construction, the amount of building solid waste is increasing, and these solid wastes are complex in composition, including concrete blocks, bricks, metals, wood and plastics, etc. Since building solid waste is a complex mixture containing a variety of valuable materials, a screening device is needed to screen the waste concrete blocks to separate the concrete pieces for road base filling or production of recycled aggregates, reducing the exploitation of natural resources. At present, complex solid waste mixtures are mostly screened by multi-stage screening machines for primary, secondary and tertiary screening of solid waste, so as to realize the classification of coarse particles (such as large concrete blocks, bricks), medium particles (such as gravel, sand) and fine particles. During the screening process, the light solid waste inside the solid waste is easy to exist, and these external forces will make the solid waste roll and move on the screening plate, and in this process, the relative positions of light waste and heavy waste will change, causing them to interleave, so that light waste is screened together with heavy waste, resulting in light waste remaining in the screened material, affecting the incomplete classification of the front-end solid waste and reducing the screening efficiency. SUMMARY

[0003] The purpose of the present application is to provide a building solid waste material screening device to solve the above technical problems.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: a building solid waste material screening device, comprising a screening machine, a feed hopper and a screening cylinder, a first discharge port for discharging materials inside the screening cylinder is formed at the top of the screening machine, a second discharge port for discharging materials after screening is formed at the bottom of the screening machine, a light and heavy screening assembly for re-screening the materials screened by the screening cylinder is installed inside the screening machine, the light and heavy screening assembly comprises a light and heavy screening plate installed inside the screening machine for vibrating screening of the materials, a wind collecting shell communicating with the inside of the screening machine is fixedly connected to one side of the screening machine, the wind collecting shell generates wind force between the light and heavy screening plate and the screening cylinder for blowing out the light materials inside the falling materials, a pre-screening assembly for dispersing the materials inside the feed hopper and the screening cylinder is arranged at the top of the screening machine, two symmetrical throttle assemblies are arranged inside the screening machine, and the throttle assemblies are used to disturb the waste materials between the light and heavy screening plate and the screening cylinder.

[0005] Preferably, the side away from the air collecting casing of the screening machine is fixedly connected with a distribution box, the distribution box is provided with a snail-shaped structure, a material guiding cavity is connected between the distribution box and the screening machine, the material guiding cavity corresponds to the air collecting casing, an air blower is fixedly connected to the outside of the air collecting casing, the air blower is used for generating air force in the air collecting casing, a plurality of air outlet nozzles are fixedly connected to one side of the air collecting casing and communicate with the inside of the air collecting casing, a third discharge port is formed in the side of the screening machine close to the light and heavy screening plate, and a fine division assembly is arranged on one side of the distribution box and used for re-discharging the remaining material in the material guiding cavity to the surface of the light and heavy screening plate.

[0006] Preferably, the fine division assembly comprises a fine division frame fixedly connected to the inside of the material guiding cavity and provided with a trapezoidal structure, two material throwing pipes are connected between the distribution box and the screening machine and communicate with the inside of the material guiding cavity, a plurality of fine material ports are formed between the fine division frame and the distribution box and used for discharging the waste material in the material guiding cavity to the inside of the material throwing pipe, and a closing plate is hingedly connected to the top of the distribution box and used for opening and closing the inside of the distribution box.

[0007] Preferably, the pre-screening assembly comprises a feeding pipe fixedly connected between the feeding hopper and the screening machine, a support frame connected between the feeding pipe and the screening machine, a rotating rod connected between the support frame, the feeding pipe and the screening machine, a sleeve shell fixedly sleeved to the outside of the rotating rod, and a spiral pushing frame fixedly sleeved to the outside of the rotating rod and located in the inside of the feeding pipe.

[0008] Preferably, the sleeve shell is fixedly sleeved to the outside of the rotating rod and located in the inside of the screening cylinder, and a plurality of throwing rod frames are fixedly connected to the outside of the sleeve shell and provided with an I-shaped structure.

[0009] Preferably, the throttling assembly comprises a positioning plate fixedly connected to the inside of the screening machine, two guide sliding blocks symmetrically connected to the outside of the positioning plate, two fixed columns connected between the two guide sliding blocks, a disturbance rod provided on one side of the two fixed columns and used for contacting the falling waste material, and a multidirectional assembly arranged between the fixed column and the positioning plate and used for driving the disturbance rod to move horizontally and vertically reciprocatingly.

[0010] Preferably, the multidirectional assembly comprises a plurality of tooth-and-groove engaging columns fixedly connected to one side of the positioning plate, a ring gear frame rotatably connected to one side of the two fixed columns close to the positioning plate and engaged with the tooth-and-groove engaging columns, a limiting plate slidingly connected between the two fixed columns, a second servo motor fixedly connected to one side of the limiting plate away from the ring gear frame and used for driving the ring gear frame to rotate, and a speed sorting assembly arranged between the limiting plate and the disturbance rod and used for driving the disturbance rod to rotate.

[0011] Preferably, the rapid discharge assembly comprises a centering slider connected to one side of the fixed column through sliding connection, the centering slider is sleeved on the outside of the second servo motor, the end of the disturbance rod close to the centering slider is fixedly connected with an ear column, one side of the centering slider is fixedly connected with a centering frame, the centering frame is connected between the centering frame and the ear column, and the outside of the disturbance rod is fixedly connected with a plurality of ear plates.

[0012] In the above technical solution, the present application provides technical effects and advantages:

[0013] 1、The present application is provided with an air outlet nozzle, a light and heavy screening plate, a screening machine, a screening drum and a first discharge port, which can create a height difference between the screening drum and the light and heavy screening plate, thereby prolonging the path of the solid waste falling on the surface of the light and heavy screening plate, and the distance between the light and heavy screening plate and the screening drum forms a buffer space, when the airflow blown by the air outlet nozzle enters this space, the airflow will be buffered and diffused in it, which helps to avoid the airflow being too concentrated, so that the airflow can be more evenly distributed in the entire screening area, and the uniform airflow can better act on each waste particle, so that the light waste is more uniformly pushed by the wind and is more smoothly separated out, preventing the light waste from remaining in the screened material, which is beneficial to the front-end solid waste classification and improves the screening efficiency.

[0014] 2、The present application is provided with a material guiding cavity, a subdividing frame, a material throwing pipe and a light and heavy screening plate, which can move the light waste along the inner wall of the material guiding cavity to the top of the subdividing frame, and then the light waste is in a dispersed state during the movement, at this time, the light waste is separated from the small particle waste carried in it, and the small particle waste is re-discharged to the surface of the light and heavy screening plate by the material throwing pipe, and then the light and heavy screening plate re-screens the small particle waste, thereby improving the solid waste screening precision and effectively separating the non-target waste.

[0015] 3、The present application is provided with a pre-screening assembly, a screening drum, an air outlet nozzle and a light and heavy screening plate, which can fully lift or overturn the solid waste in the screening drum, and during the stirring process of the rotating rod, the light waste will be thrown into the interior of the screening drum, while the heavy waste will fall faster due to its large inertia, thereby forming an obvious density difference, so that the light waste and the heavy waste more dispersedly pass through the screening port of the screening drum, optimizing the separation trajectory of the light and heavy waste and further improving the separation effect of the light and heavy waste.

[0016] 4、The present application is provided with a disturbance rod, an air outlet nozzle, a screening drum and a light and heavy screening plate, which can move the waste to different positions to resist the falling waste, so that the waste forms a turbulent state after contacting the disturbance rod, which is beneficial to the airflow to have more opportunities to blow it away from the heavy waste, so that the waste will have a longer residence time when passing through the wind area, and the light waste can be more effectively separated from the heavy waste, thereby improving the waste screening effect.

[0017] 5. The present invention, through the arrangement of multi-directional components, disturbance rods and light and heavy screening plates, can realize that the disturbance rod forms a circular motion state inside the screening machine, which can evenly distribute the waste in the airflow action area, ensuring that after the disturbance rod disperses the waste, the airflow can accurately act on the target waste, avoiding the increase of airflow resistance due to the dense waste, and reducing energy consumption;

[0018] 6. The present invention, through the arrangement of the disturbance rod, the quick discharge component, the third discharge port and the light and heavy screening plates, can form resistance after contact with the waste on the surface of the light and heavy screening plates and push the waste along the surface of the light and heavy screening plates to the vicinity of the third discharge port, thereby accelerating the discharge of target waste. At the same time, the ear plates are used to flatten the waste that is more concentrated on the surface of the light and heavy screening plates when pushing the waste, so that the waste can quickly pass through the light and heavy screening plates and fall to the inside of the first discharge port, thereby improving the flexibility of solid waste screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a schematic structural diagram of the first discharge port of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the material distribution box of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the light and heavy screening plate of the present invention;

[0023] Figure 4 For the present invention Figure 3 A local enlarged view of point A in FIG;

[0024] Figure 5 It is a structural schematic diagram of the rod throwing frame of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the spiral push frame of the present invention;

[0026] Figure 7 This is a schematic structural diagram of the positioning plate of the present invention;

[0027] Figure 8 For the present invention Figure 7 A local enlarged view of point B in FIG;

[0028] Figure 9 It is a structural schematic diagram of the feed chamber of the present invention;

[0029] Figure 10 It is a structural schematic diagram of the subdivision frame of the present invention;

[0030] Figure 11 A schematic diagram of the structure of the ring gear carrier of the present invention meshing with the rightmost tooth groove meshing column;

[0031] Figure 12 It is a schematic structural diagram of the engagement between the ring gear carrier and the leftmost tooth groove engagement column of the present invention.

[0032] Description of reference numerals:

[0033] 1. Screening machine; 11. Feed hopper; 12. Screening drum; 13. First discharge port; 14. Second discharge port;

[0034] 2. Light and heavy screening assembly; 21. Light and heavy screening plate; 22. Air collecting shell; 23. Air outlet nozzle; 24. Blower; 25. Material distribution box; 26. Material introduction chamber; 27. Third material outlet;

[0035] 3. Pre-screen assembly; 31. Feed pipe; 32. Rotating rod; 33. Housing; 34. Screw pusher; 35. First servo motor; 36. Support frame; 37. Rod thrower frame;

[0036] 4. Throttle assembly; 41. Positioning plate; 42. Guide slide; 43. Fixing column; 44. Ring gear rack; 45. Tooth-slot engagement column; 46. Disturbance rod; 47. Limiting plate; 48. Second servo motor;

[0037] 5. Quick-displacement assembly; 51. Ear plate; 52. Centering slider; 53. Centering frame; 54. Ear post;

[0038] 6. Subdivision assembly; 61. Subdivision rack; 62. Closing plate; 63. Fine material port; 64. Material throwing tube. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] The present invention provides Figure 1 、 Figure 2 、 Figure 3 and Figure 4The building solid waste material screening device shown, including screening machine 1, feed hopper 11 and screening cylinder 12, the top of screening machine 1 is provided with first discharge port 13 for discharging the material in the inside of screening cylinder 12, the bottom of screening machine 1 is provided with second discharge port 14 for discharging the material after screening, light and heavy screening assembly 2 is installed in the inside of screening machine 1 for screening the material screened by screening cylinder 12 again, light and heavy screening assembly 2 includes light and heavy screening plate 21 installed in the inside of screening machine 1 for vibrating screening the material, one side of screening machine 1 is fixedly connected with air collecting shell 22 communicated with the inside thereof, air collecting shell 22 generates wind force between light and heavy screening plate 21 and screening cylinder 12, for blowing out the light material in the inside of the material falling down: the side of screening machine 1 away from air collecting shell 22 is fixedly connected with material distribution box 25, and material distribution box 25 is arranged as a snail-shaped structure, material distribution box 25 and screening machine 1 are jointly connected with material guiding cavity 26, and material guiding cavity 26 corresponds to air collecting shell 22, air collecting shell 22 is fixedly connected with air blower 24 outside, and air blower 24 is used for generating wind force in the inside of air collecting shell 22, one side of air collecting shell 22 is fixedly connected with a plurality of air outlet nozzles 23 communicated with the inside thereof, the side of screening machine 1 close to light and heavy screening plate 21 is provided with third discharge port 27;

[0041] Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The first discharge port 13 and the second discharge port 14 are distributed at different positions outside the screening machine 1, for realizing classification screening of solid waste materials with different diameters, and the first discharge port 13 and the second discharge port 14 can be connected with different external conveying equipment to transport the screened solid waste to the designated place, and the number of the plurality of air outlet nozzles 23 is seven, and the seven air outlet nozzles 23 are arranged in a straight line array on one side of the air collecting shell 22;

[0042] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 9As shown, when the light solid waste (wood or plastic) and heavy solid waste (concrete block or brick) inside the screening machine 1 need to be screened, the solid waste to be sorted is first put into the inside of the feeding hopper 11, and then the feeding hopper 11 transports the solid waste inside to the inside of the screening drum 12. At this time, the solid waste falls through the screening opening of the screening drum 12 to the surface of the light and heavy screening plate 21, and there is a height difference between the screening drum 12 and the light and heavy screening plate 21, which is used to prolong the path of the solid waste falling on the surface of the light and heavy screening plate 21. Moreover, the air blower 24 rotates the gas from the air inlet into the volute-shaped cavity, and flows to the vicinity of the rotating impeller. Then the gas is guided to the outlet inside the air blower 24 and forms high-pressure gas, so that the high-pressure airflow is discharged from the outlet into the inside of the air collecting shell 22. At this time, the inside of the air collecting shell 22 forms directional wind and is transported to the inside of the seven air outlet nozzles 23. Then the seven air outlet nozzles 23 generate wind power inside the screening machine 1. The wind power is used to blow the falling solid waste. The solid waste is affected by the wind power, so that the light and heavy separation of the solid waste is realized during the falling process. The heavier waste remains on the original track, and the light waste is blown into the inside of the material guiding cavity 26 under the action of the wind power. At this time, the light waste slides along the inner wall of the material guiding cavity 26 to the deep inside. Then the heavier waste falls on the surface of the light and heavy screening plate 21, and the light and heavy screening plate 21 reselects the heavier waste. Because there is a certain distance between the light and heavy screening plate 21 and the screening drum 12, the distance between the light and heavy screening plate 21 and the screening drum 12 forms a buffer space. When the airflow blown by the air outlet nozzle 23 enters this space, the airflow will be buffered and diffused in it. This helps to avoid too concentrated airflow, so that the airflow can be more evenly distributed in the entire screening area. Uniform airflow can better act on each waste particle, so that the light waste is more smoothly separated, and the situation that part of the light waste cannot be effectively separated due to uneven airflow is reduced.

[0043] Reference Figure 9 and Figure 10 As shown, one side of the material distribution box 25 is provided with a fine division assembly 6 for re-discharging the remaining material in the material guiding cavity 26 to the surface of the light and heavy screening plate 21. The fine division assembly 6 includes a fine division frame 61 fixedly connected inside the material guiding cavity 26, and the fine division frame 61 is arranged in a trapezoidal structure. The material distribution box 25 and the screening machine 1 are jointly connected with two material throwing pipes 64 communicating with the inside thereof. A plurality of fine material openings 63 are jointly provided between the fine division frame 61 and the material distribution box 25, and the fine material openings 63 are used to discharge the waste inside the material guiding cavity 26 into the inside of the material throwing pipe 64. The top of the material distribution box 25 is hingedly connected with a closing plate 62 which is opened and closed with the inside thereof.

[0044] In addition, the subdividing frame 61 is arranged in a trapezoidal structure, so that the middle position of the subdividing frame 61 is in a convex state, and the two ends of the subdividing frame 61 are in an inclined state, which can guide the small particle waste in the lightweight waste in the internal place of the material guiding cavity 26, and facilitate the discharge of the small particle waste to the inside of the fine material port 63;

[0045] Reference Figure 9 and Figure 10 When the lightweight waste is blown into the inside of the material guiding cavity 26, and the lightweight waste contains small particle materials, the lightweight waste moves along the inner wall of the material guiding cavity 26 to the top of the subdividing frame 61, and then the lightweight waste is in a dispersed state during the movement, at this time, the lightweight waste is separated from the small particle waste carried in it, and the small particle waste is close to the top of the subdividing frame 61, and the subdividing frame 61 guides the small particle waste near it to the inside of the fine material port 63, so that the small particle waste is discharged into the inside of the material throwing pipe 64 through the fine material port 63, and then the material throwing pipe 64 re-discharges the small particle waste in its inside to the surface of the light and heavy screening plate 21, and then the light and heavy screening plate 21 re-screens the small particle waste, improves the solid waste screening precision, effectively separates the non-target waste, and as the lightweight waste in the material guiding cavity 26 is continuously collected, the closing plate 62 is opened to expose the internal space of the material guiding cavity 26 to the outside, and then the lightweight waste in the material guiding cavity 26 is collected and processed, in addition, the target waste on the surface of the light and heavy screening plate 21 is close to the vicinity of the third discharge port 27 under the continuous vibration of the light and heavy screening plate 21, and the target waste is discharged from the inside of the screening machine 1 by the third discharge port 27; so that the third discharge port 27, the first discharge port 13 and the second discharge port 14 cooperate with each other to realize the classification and screening of the waste, and the accurate screening and classification makes the recyclable resources in the building solid waste can be more effectively recycled and utilized, improves the resource utilization rate, and reduces the resource waste.

[0046] Reference Figure 3 , Figure 5 and Figure 6As shown, the top of the screening machine 1 is provided with a pre-screening assembly 3 for dispersing the materials in the feed hopper 11 and the screening cylinder 12; the pre-screening assembly 3 comprises a feed pipe 31 fixedly connected between the feed hopper 11 and the screening machine 1, a support frame 36 is jointly connected between the feed pipe 31 and the screening machine 1, a rotating rod 32 is jointly connected between the support frame 36, the feed pipe 31 and the screening machine 1, a sleeve shell 33 is fixedly sleeved outside the rotating rod 32, a spiral push frame 34 is fixedly sleeved outside the rotating rod 32, the spiral push frame 34 is located inside the feed pipe 31, a first servo motor 35 is fixedly connected to one side of the support frame 36, and the first servo motor 35 is used to drive the rotating rod 32 to rotate; the sleeve shell 33 is fixedly connected outside the rotating rod 32, and the sleeve shell 33 is located inside the screening cylinder 12, a plurality of throwing rod frames 37 are fixedly connected outside the sleeve shell 33, and the throwing rod frames 37 are arranged in an I-shaped structure;

[0047] Referring to Figure 3 , Figure 5 and Figure 6 , in addition, the spiral push frame 34 is arranged in a spiral structure, which can disperse the waste materials into the interior of the screening cylinder 12, and the number of the plurality of throwing rod frames 37 is three; when the waste materials in the feed hopper 11 are transported into the interior of the screening cylinder 12, the first servo motor 35 is driven to drive the rotating rod 32 to rotate synchronously, and then the rotating rod 32 drives the spiral push frame 34 to rotate synchronously, at this time the spiral push frame 34 rotates to push the waste materials in the feed pipe 31 to move into the interior of the screening cylinder 12, and the solid waste in the feed pipe 31 is dispersed in advance under the rotation of the spiral push frame 34, so that the light waste materials and the heavy waste materials are separated and dispersed into the interior of the screening cylinder 12, in this process, the rotation of the rotating rod 32 drives the sleeve shell 33 to rotate synchronously, at this time the rotation of the rotating rod 32 drives the three throwing rod frames 37 to rotate synchronously, at this time the throwing rod frames 37 fully lift or overturn the solid waste, and in the stirring process of the rotating rod 32, the light waste materials are thrown into the interior of the screening cylinder 12, while the heavy waste materials fall faster due to their large inertia, forming an obvious density difference, so that the light waste materials and the heavy waste materials are more dispersed and pass through the screening port of the screening cylinder 12, optimizing the separation trajectory of the light and heavy waste materials, and then the pre-screening assembly 3 and the air outlet nozzle 23 form a synergistic effect, further improving the separation effect of the light and heavy waste materials.

[0048] Referring to Figure 7 , Figure 8 , Figure 11 and Figure 12As shown, the inside of the screening machine 1 is provided with two symmetrical throttle components 4, and the throttle components 4 are used to disturb the waste between the light and heavy screening plates 21 and the screening drum 12, the throttle components 4 include a positioning plate 41 fixedly connected in the inside of the screening machine 1, the outside of the positioning plate 41 is symmetrically connected with two guide sliding blocks 42, the two guide sliding blocks 42 are commonly connected with two fixed columns 43, one side of the two fixed columns 43 is provided with a disturbing rod 46, and the disturbing rod 46 is used to contact the falling waste, and a multi-directional component for driving the disturbing rod 46 to move horizontally and vertically is arranged between the fixed column 43 and the positioning plate 41; the multi-directional component includes a plurality of tooth groove engagement columns 45 fixedly connected on one side of the positioning plate 41, the side of the two fixed columns 43 close to the positioning plate 41 is rotatably connected with a ring gear frame 44 engaged with the tooth groove engagement column 45, the two fixed columns 43 are slidably connected with a limiting plate 47 between them, the side of the limiting plate 47 away from the ring gear frame 44 is fixedly connected with a second servo motor 48, and the second servo motor 48 is used to drive the ring gear frame 44 to rotate;

[0049] Reference Figure 7 , Figure 8 , Figure 11 and Figure 12As shown, in addition, the two disturbance rods 46 are combined to form a whole; when the waste falls between the screening drum 12 and the light and heavy screening plate 21, and the air outlet nozzle 23 blows and separates the light and heavy waste, the second servo motor 48 drives the ring gear frame 44 to rotate synchronously, and then the ring gear frame 44 rotates and engages with the plurality of tooth groove engagement columns 45 to form meshing transmission, at this time the ring gear frame 44 moves horizontally along the outside of the plurality of tooth groove engagement columns 45, and the ring gear frame 44 drives the two fixed columns 43 and the two guide sliding blocks 42 to move horizontally along the outside of the positioning plate 41 and one end of the plurality of tooth groove engagement columns 45 during the movement, and the movement of the fixed column 43 drives the disturbance rod 46 to move synchronously along the inside of the screening machine 1, so that the disturbance rod 46 moves to different positions from the falling waste to resist, so that the waste forms a turbulent state after contacting the disturbance rod 46, which is beneficial to the airflow to have more opportunities to blow it away from the heavier waste, so that the waste has a longer residence time when passing through the air area, and the light waste is more effectively separated from the heavier waste, improving the waste screening effect, in addition, when the ring gear frame 44 moves to the leftmost side of the positioning plate 41, the ring gear frame 44 and the leftmost tooth groove engagement column 45 remain in engagement at this time, and then the ring gear frame 44 rotates along the outside circumference of the leftmost tooth groove engagement column 45, and the ring gear frame 44 moves downward along one side of the positioning plate 41, and the downward movement of the ring gear frame 44 drives the limiting plate 47 to move downward between the two fixed columns 43, so that the downward movement of the limiting plate 47 drives the disturbance rod 46 to move synchronously downward along one side of the fixed column 43, so that the disturbance rod 46 moves close to the surface of the light and heavy screening plate 21, for the disturbance rod 46 to change from horizontal movement to the left of the positioning plate 41 to downward movement, and the height between the disturbance rod 46 and the positioning plate 41 is adjusted synchronously, and then the ring gear frame 44 continues to rotate and mesh with the plurality of tooth groove engagement columns 45 to drive the disturbance rod 46 to move horizontally from left to right, similarly, when the ring gear frame 44 moves to the rightmost side of the positioning plate 41, the ring gear frame 44 moves along the outside circumference of the rightmost tooth groove engagement column 45, so that the disturbance rod 46 moves from bottom to top, and then reciprocates, so that the disturbance rod 46 makes a meandering reciprocating motion along one side of the positioning plate 41, which is beneficial to the disturbance rod 46 to have multiple motion states, and the motion state of the disturbance rod 46 changes from horizontal movement to the left to downward movement, and then from downward movement to horizontal movement to the right, and from horizontal movement to the right to upward movement, and reciprocates in this way, which can uniformly distribute the waste in the airflow action area, ensure that the airflow can accurately act on the target waste after the disturbance rod 46 disperses the waste, and avoid increasing the airflow resistance due to the dense waste, thereby reducing energy consumption.

[0050] Reference Figure 7 、 Figure 8 、 Figure 11 and Figure 12As shown, the limiting plate 47 and the disturbance rod 46 are provided with a speed row assembly 5 that drives the disturbance rod 46 to rotate, the speed row assembly 5 includes a centering sliding block 52 slidingly connected on one side of the fixed column 43, and the centering sliding block 52 is sleeved on the outside of the second servo motor 48, and the end of the disturbance rod 46 close to the centering sliding block 52 is fixedly connected with an ear column 54, and the centering sliding block 52 is fixedly connected with a centering frame 53 on one side, and the centering frame 53 is connected between the ear column 54, and the outside of the disturbance rod 46 is fixedly connected with a plurality of ear plates 51;

[0051] Reference Figure 7 As shown, and the plurality of ear plates 51 are divided into four groups, and there are two groups of ear plates 51 outside each fixed column 43, and the two groups of ear plates 51 outside the two fixed columns 43 are symmetrically and alternately arranged.

[0052] Reference Figure 7 、 Figure 8 、 Figure 11 and Figure 12 As shown, when the disturbance rod 46 moves from top to bottom along one side of the positioning plate 41, and the waste on the surface of the light and heavy screening plate 21 is not evenly dispersed, the ear plate 51 is located near the surface of the light and heavy screening plate 21, and there is a certain distance between the ear plate 51 and the light and heavy screening plate 21, at this time the disturbance rod 46 moves to drive the ear plate 51 to move synchronously, and the ear plate 51 contacts the waste on the surface of the light and heavy screening plate 21 to form a resistance and push the waste to move along the surface of the light and heavy screening plate 21 to the vicinity of the third discharge port 27, accelerating the discharge of the target waste. At the same time, the ear plate 51 is used to flatten the waste on the surface of the light and heavy screening plate 21 when pushing the waste, so as to facilitate the waste to quickly pass through the light and heavy screening plate 21 and fall into the inside of the first discharge port 13, and improve the flexibility of solid waste screening.

[0053] Working principle:

[0054] In use;

[0055] Reference Figure 3 、 Figure 5 、 Figure 6 and Figure 7As shown, when the light solid waste (wood or plastic) and heavy solid waste (concrete block or brick) inside the screening machine 1 need to be screened, the first servo motor 35 drives the rotating rod 32 to rotate synchronously, and then the rotating rod 32 drives the spiral push bracket 34 to rotate synchronously. At this time, the spiral push bracket 34 rotates to push the waste inside the feeding pipe 31 to move to the inside of the screening cylinder 12, and the solid waste inside the feeding pipe 31 is dispersed under the rotation of the spiral push bracket 34, so that the light waste and the heavy waste are separated and dispersed into the inside of the screening cylinder 12. In this process, the rotation of the rotating rod 32 drives the sleeve 33 to rotate synchronously, and at this time the rotating rod 32 drives the three throwing rod frames 37 to rotate synchronously. At this time, the throwing rod frame 37 fully lifts or overturns the solid waste, and during the stirring process of the rotating rod 32, the light waste is thrown into the inside of the screening cylinder 12, while the heavy waste falls faster due to its large inertia, forming a clear density difference, so that the light waste and the heavy waste are more dispersed through the screening port of the screening cylinder 12.

[0056] Referring to Figure 3 and Figure 4 As shown, when the light and heavy solid waste is separated in the screening cylinder 12, and then the light and heavy solid waste passes through the screening cylinder 12, there is a height difference between the screening cylinder 12 and the light and heavy screening plate 21, which is used to prolong the path of the solid waste falling on the surface of the light and heavy screening plate 21, and the air blower 24 rotates the gas from the air inlet into the volute-shaped cavity, and flows to the vicinity of the rotating impeller. Then the gas is guided to the outlet inside the air blower 24 and forms high-pressure gas, so that the high-pressure gas flow is discharged from the outlet into the inside of the air collecting shell 22. At this time, the inside of the air collecting shell 22 forms directional wind and is transported to the inside of the seven air outlet nozzles 23. In turn, the seven air outlet nozzles 23 generate wind power inside the screening machine 1. The wind power is used to blow the falling solid waste. As a result, the solid waste is affected by the wind power, so that the light and heavy solid waste is separated during the falling process. The heavy waste remains on the original trajectory.

[0057] Referring to Figure 3 , Figure 9 and Figure 10 As shown, when the light and heavy solid waste is separated between the screening cylinder 12 and the light and heavy screening plate 21, the light waste is blown into the inside of the material guiding cavity 26 under the action of the wind power. At this time, the light waste slides along the inner wall of the material guiding cavity 26 to the deep inside. Then the heavy waste falls on the surface of the light and heavy screening plate 21, and the light and heavy screening plate 21 reselects the heavy waste and reselects the small particle waste inside the material guiding cavity 26 to the surface of the light and heavy screening plate 21 through the fine classification assembly 6. Then the light and heavy screening plate 21 reselects the small particle waste, improves the solid waste screening precision, and effectively separates the non-target waste.

[0058] Referring to Figure 3 and Figure 7As shown, when the waste falls between the screening drum 12 and the light-heavy screening plate 21, and the air outlet nozzle 23 blows and separates the light-heavy waste, the throttle assembly 4 makes a meandering reciprocating motion between the screening machine 1, the screening drum 12 and the light-heavy screening plate 21, which can uniformly distribute the waste in the airflow action area, and ensure that after the waste is dispersed by the throttle assembly 4, the airflow can accurately act on the target waste, avoiding the increase of airflow resistance due to the dense waste, and reducing energy consumption.

[0059] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application, therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of the claims of the present application.

Claims

1. A device for screening construction solid waste, comprising a screening machine, a feed hopper, and a screening drum, wherein the top of the screening machine is provided with a first discharge port for discharging the material inside the screening drum, and the bottom of the screening machine is provided with a second discharge port for discharging the screened material, characterized in that: The screening machine is internally provided with a light and heavy screening assembly for re-screening the material screened by the screening drum, the light and heavy screening assembly comprising a light and heavy screening plate installed inside the screening machine for vibrating and screening the material, a wind collecting shell connected to the interior of the screening machine is fixedly connected to one side of the screening machine, the wind collecting shell generates wind between the light and heavy screening plates and the screening drum, and is used to blow out the light material inside the fallen material, the top of the screening machine is provided with a pre-screening assembly for dispersing the material inside the feed hopper and the screening drum, the interior of the screening machine is provided with two symmetrical throttling assemblies, and the throttling assemblies are used to disturb the waste material between the light and heavy screening plates and the screening drum; The throttling assembly includes a positioning plate fixedly connected to the interior of the screening machine, two guide sliders are symmetrically connected to the outside of the positioning plate, two fixed columns are commonly connected between the two guide sliders, a disturbance rod is provided on one side of the two fixed columns, and the disturbance rod is used to contact the falling waste, and a multi-directional assembly is provided between the fixed column and the positioning plate to drive the disturbance rod to move back and forth horizontally and up and down; The multi-directional component includes a plurality of tooth-groove meshing columns fixedly connected to one side of the positioning plate, two fixed columns are rotatably connected to a ring gear frame meshed with the tooth-groove meshing columns on one side close to the positioning plate, a limiting plate is slidably connected between the two fixed columns, a second servo motor is fixedly connected to the side of the limiting plate away from the ring gear frame, and the second servo motor is used to drive the ring gear frame to rotate, and a quick-displacement component is provided between the limiting plate and the disturbance rod to drive the disturbance rod to rotate; The quick-displacement assembly includes a centering slider slidably connected to one side of the fixed column, and the centering slider is sleeved on the outside of the second servo motor, the disturbance rod is fixedly connected to an ear column at one end close to the centering slider, and one side of the centering slider is fixedly connected to a centering frame, and the centering frame and the ear column are connected, and a plurality of ear plates are fixedly connected to the outside of the disturbance rod.

2. The device for screening construction solid waste according to claim 1, characterized in that: The screening machine is fixedly connected to a distribution box on the side away from the air collecting shell, and the distribution box is arranged to be a volute structure. A material inlet cavity is commonly connected between the distribution box and the screening machine, and the material inlet cavity corresponds to the air collecting shell. A blower is fixedly connected to the outside of the air collecting shell, and the blower is used to generate wind force inside the air collecting shell. One side of the air collecting shell is fixedly connected to a plurality of air outlet nozzles communicated with the interior thereof. A third discharge port is provided on the side of the screening machine close to the light and heavy screening plate, and a subdivision component is provided on one side of the distribution box for re-discharging the residual material in the material inlet cavity into the surface of the light and heavy screening plate.

3. The device for screening construction solid waste according to claim 2, characterized in that: The subdivision component includes a subdivision rack fixedly connected to the inside of the material introduction cavity, and the subdivision rack is arranged in a trapezoidal structure. The material distribution box and the screening machine are commonly connected with two throwing pipes which are communicated with the inside thereof. Several fine material openings are commonly opened between the subdivision rack and the material distribution box, and the fine material openings are used to discharge the waste material inside the material introduction cavity into the inside of the throwing pipe. The top of the material distribution box is hinged with a closing plate which opens and closes with the inside thereof.

4. The device for screening construction solid waste according to claim 1, characterized in that: The pre-screening assembly includes a feed pipe fixedly connected between the feed hopper and the screening machine, a support frame is commonly connected between the feed pipe and the screening machine, a rotating rod is commonly connected between the support frame, the feed pipe and the screening machine, the outside of the rotating rod is fixedly sleeved with a sleeve, the outside of the rotating rod is fixedly sleeved with a spiral push rack, and the spiral push rack is located inside the feed pipe, a first servo motor is fixedly connected to one side of the support frame, and the first servo motor is used to drive the rotating rod to rotate.

5. The device for screening construction solid waste according to claim 4, characterized in that: The outside of the rotating rod is fixedly sleeved with a casing, and the casing is located inside the screening cylinder. The outside of the casing is fixedly connected with a plurality of throwing rod frames, and the throwing rod frames are arranged in an I-shaped structure.

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