CN114939526A

CN114939526A - Screening plant for recycling solid waste resources

Info

Publication number: CN114939526A
Application number: CN202210880848.2A
Authority: CN
Inventors: 马近存; 王飞鹏; 卫玮
Original assignee: Shanxi Huanxing Technology Co ltd
Current assignee: Shanxi Huanxing Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-08-26
Anticipated expiration: 2042-07-26
Also published as: CN114939526B

Abstract

The invention relates to the field of solid screening devices, in particular to a screening device for recycling solid waste resources, which comprises a multi-stage screening assembly, wherein particles sequentially pass through a first screen plate, a second screen plate and a third screen plate, the aperture of a first screen hole on the first screen plate is the same as that of a third screen hole on the third screen plate, the accuracy of particle screening is improved, the particles which do not enter a first guide plate and a third guide plate after being screened by the third screen plate enter a next-stage screening assembly for screening through the transmission of a transmission belt through a discharge hole of a shell. When first sieve blockked up, the certain distance of first deflector upward movement through first elastic component connection, the third deflector lapse migration distance of connecting through the second elastic component, through drive assembly's transmission, make first clearance dish and second clearance dish clear up first sieve mesh and third sieve mesh simultaneously, when the sieve blockked up, reduce dismounting device's time, improve the efficiency to the granule screening.

Description

Screening plant for recycling solid waste resources

Technical Field

The invention relates to the field of solid screening devices, in particular to a screening device for recycling solid waste resources.

Background

In daily life, a lot of solid particle wastes are generated, and in the process of treating the solid particle wastes, different treatment modes are not required according to the sizes of solid particles, so that the wastes need to be sieved. At present, when screening solid waste, at first put a large amount of solid waste in less sieve, at first screening out less solid particle, then change the screen cloth that the mesh is a little bit bigger, screen out slightly bigger solid particle, carry out the technology of using difference to process it according to the particle size of screening out, but at the in-process of screening out the granule, some granule can directly be stifled in the mesh of screen cloth, get off for a long time, cause the screen cloth to block up easily, influence the screening effect, need shut down and dismantle the mediation to the screen cloth, and complex operation influences screening efficiency.

Disclosure of Invention

The invention provides a screening device for recycling solid waste resources, which aims to solve the problem that the existing screening device is easy to be blocked by particles.

The invention relates to a screening device for recycling solid waste resources, which adopts the following technical scheme:

a screening device for recycling solid waste resources comprises multi-stage screening assemblies, wherein the multi-stage screening assemblies are arranged at intervals, and a driving belt is arranged between every two adjacent stages of screening assemblies; each stage of screening assembly comprises a shell, a screening unit, a guide unit and a cleaning unit; the shell is provided with a screening cavity and a feeding hole and a discharging hole;

the screening unit comprises a first inclined screening plate, a second inclined screening plate and a third inclined screening plate, particles sequentially pass through the first inclined screening plate, the second inclined screening plate and the third inclined screening plate, the aperture of a first screening hole formed in the first inclined screening plate is the same as that of a third screening hole formed in the third inclined screening plate, and a transmission belt is arranged between the third inclined screening plate and a feeding hole of an adjacent next-stage screening assembly shell through a discharging hole; the guide unit comprises a first guide plate, a second guide plate and a third guide plate, the first guide plate is fixedly arranged below the first sieve plate through a first elastic piece, and one end of the first guide plate is communicated with the discharge hole; the second guide plate is fixedly arranged below the second sieve plate and is smoothly connected with the third sieve plate; the third guide plate is fixedly arranged below the third sieve plate through a second elastic piece, and one end of the third guide plate is communicated with the discharge hole; the cleaning unit comprises a first cleaning disc group and a second cleaning disc group, the first cleaning disc group is arranged between the first guide plate and the first sieve plate, the second cleaning disc group is arranged between the third guide plate and the third sieve plate, the second cleaning disc group is in transmission connection with the first cleaning disc group through the transmission unit, and when the deformation amount of the first elastic element is reduced and the deformation amount of the second elastic element is increased, the first cleaning disc group and the second cleaning disc group can simultaneously clean the first sieve plate and the third sieve plate from bottom to top.

Further, first clearance dish group includes first fixed disk and first slip dish, and first fixed disk is parallel and fixed to be set up in the below of first sieve, and first slip dish parallel arrangement is in first fixed disk below, and fixed being provided with on the first slip dish with the first clearance pole that first sieve mesh number is the same, when first slip dish upwards slided, first clearance pole runs through first fixed plate and gets into in the first sieve mesh.

Further, the second cleaning disc group comprises a second fixed disc and a second sliding disc, the second fixed disc is parallel to and fixedly arranged below the third sieve plate, the second sliding disc is parallel to and arranged below the second fixed disc, second cleaning rods with the same number as the third sieve holes are fixedly arranged on the second sliding disc, and when the second sliding disc slides upwards, the second cleaning rods penetrate through the second fixed disc and enter the third sieve holes.

Further, the transmission unit includes a first transmission part and a second transmission part; the first transmission part comprises a first fixed rod, a second fixed rod, a first sliding rod and a trigger swing rod; two ends of the first fixed rod are respectively and fixedly connected with the first sliding disc and the second sliding disc; the second fixed rod is fixedly connected to the side wall of the screening cavity; the middle part of the trigger swing rod can swing around the second fixed rod, and one end of the trigger swing rod is abutted against the lower end face of the first sliding disc; a first slide way with a downward opening is arranged on the lower end face of the first sliding disc and is arranged between the upper end and the lower end of the first sliding disc; the first sliding rod is vertically and telescopically arranged, one end of the first sliding rod can be arranged along the first slide way in a sliding mode, and the middle of the first sliding rod is rotatably connected to the trigger swing rod; the second transmission part is used for enabling the first sliding rod to slide along the first slideway and driving the trigger swing rod to push the first sliding disc to move upwards when the deformation amount of the first elastic piece is reduced and the deformation amount of the second elastic piece is increased.

Further, the second transmission part includes a second sliding bar, a first hinge bar, and a third sliding bar; the second sliding rod is slidably sleeved at the lower part of the first sliding rod; the lower end of the third sliding rod is fixedly connected with the third guide plate; a third slideway is arranged on the first guide plate, and a third fixed rod is fixedly arranged in the third slideway; the second slide has been seted up at first articulated rod middle part, and the third dead lever slides and sets up in the second slide with rotating, makes first articulated rod slide and rotate along the third slide, and the one end of first articulated rod articulates in the lower extreme of second slide bar, and the other end of first articulated rod articulates in the upper end of second slide bar.

Furthermore, the inclination angles of the first sieve plate and the second sieve plate are the same, the lower end of the first sieve plate is fixedly connected with the upper end of the second sieve plate, and the diameter of a second sieve hole of the second sieve plate is larger than that of a first sieve hole of the first sieve plate; the third sieve is fixedly arranged below the first sieve, and the inclination angle of the third sieve is opposite to that of the first sieve.

Furthermore, the aperture sizes of second sieve holes of a second sieve plate in any two-stage screening assembly are the same and are larger than the maximum diameter of the particles to be screened; the diameter of a first sieve hole of a first sieve plate in a next-stage screening assembly of the adjacent two-stage screening assembly is larger than that of a first sieve hole of a first sieve plate in a previous-stage screening assembly.

The invention has the beneficial effects that: the solid waste resource recycling screening device comprises a multistage screening component, particles are placed in a screening cavity of a shell of a first-stage screening component, the particles sequentially pass through a first screen plate, a second screen plate and a third screen plate, the aperture of a first screen hole on the first screen plate is the same as that of a third screen hole on the third screen plate, the accuracy of particle screening is improved, and the particles which do not enter a first guide plate and a third guide plate after being screened by the third screen plate enter a next-stage screening component through a discharge port of the shell through transmission of a transmission belt for screening. When normally screening the granule, the quantity that the granule got into first deflector and third deflector is fixed ratio, the quantity that gets into in the first deflector reduces in the time such as granule, the granule that gets into on the third deflector increases, make the first deflector upward movement certain distance through first elastic component is connected, third deflector through second elastic component is connected moves certain distance downwards, transmission through drive assembly, make first clearance dish clear up first sieve mesh and third sieve mesh simultaneously, when the sieve blockked up, reduce dismounting device's time, improve the efficiency to the granule screening.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an application scene diagram of a solid waste resource recycling screening device according to an embodiment of the present invention;

FIG. 2 is a front view of a single primary screening assembly in a solid waste resource recycling screening device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a hidden casing of a single primary screening component in the screening device for recycling solid waste resources according to the embodiment of the present invention;

FIG. 4 is a partial sectional view of a single primary screening assembly in a solid waste resource recycling screening apparatus according to an embodiment of the present invention;

fig. 5 is a schematic view of a partial structure of a single primary screening assembly in a solid waste resource recycling screening device according to an embodiment of the present invention;

fig. 6 is an exploded view of a transmission unit and a first guide plate in a single primary screening assembly in the solid waste resource recycling screening apparatus according to the embodiment of the present invention;

fig. 7 is a schematic mechanism diagram of a first sliding tray and a second sliding tray in a single primary screening assembly in a solid waste resource recycling screening device connected by a first fixing rod according to an embodiment of the present invention.

In the figure: 110. a housing; 111. a screening chamber; 112. a feed inlet; 113. a discharge port; 120. a transmission belt; 210. a first screen deck; 211. a first screen hole; 220. a second screen deck; 221. a second sieve pore; 230. a third screen deck; 231. a third sieve pore; 310. a first guide plate; 311. a first expansion plate; 314. a first spring; 320. a second guide plate; 321. a second buffer plate; 330. a third guide plate; 331. a second expansion plate; 334. a second spring; 410. a first fixed disk; 420. a first sliding tray; 421. a first cleaning rod; 422. a first slideway; 430. a second fixed disk; 440. a second sliding tray; 441. a second cleaning rod; 510. a first fixing lever; 520. a second fixing bar; 530. a first slide bar; 540. triggering a swing rod; 550. a second slide bar; 560. a connecting rod; 570. a third slide bar; 580. a first hinge lever.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The embodiment of the solid waste resource recycling and screening device disclosed by the invention comprises multistage screening components, wherein the multistage screening components are fixedly connected through a transmission belt 120 and are arranged in a stepped manner, particles sequentially pass through the multistage screening components, so that the particles are distinguished according to different diameters, and different processes are used for processing according to different particle diameters.

Each stage of the screening assembly includes a housing 110, a screening unit, a guide unit, and a cleaning unit. The casing 110 is a rectangular structure, is arranged left and right according to the length of the casing 110, is hollow inside the casing 110, has a screening chamber 111 with a rectangular structure, and the upper end and the right side wall of the casing 110 are respectively provided with a feed inlet 112 and a discharge outlet 113.

The screening unit includes first sieve 210, second sieve 220 and third sieve 230, specifically, first sieve 210 is fixed to be set up in screening chamber 111, and the low right-hand member high ground slope setting of first sieve 210 left end, is provided with the first sieve mesh 211 that runs through from top to bottom on the first sieve 210. The inclination angle of second sieve 220 is the same with first sieve 210, and second sieve 220 is fixed to be set up in screening chamber 111, and the right-hand member of second sieve 220 and the left end fixed connection of first sieve 210. The second sieve plate 220 is provided with a second sieve hole 221 which penetrates through the second sieve plate from top to bottom, the aperture of the second sieve hole 221 is larger than that of the first sieve hole 211, the aperture of the second sieve hole 221 is larger than the diameter of the largest particles to be screened, and the apertures of the second sieve holes 221 on the second sieve plate 220 in any two-stage screening assembly are the same. The third sieve 230 is fixed to be set up in screening chamber 111, and the setting that the third sieve 230 left end is high right-hand member is low makes the right-hand member of third sieve 230 set up in casing 110's discharge gate 113 department, and is provided with drive belt 120 between the right-hand member of third sieve 230 and the feed inlet 112 of next level screening subassembly casing 110, and drive belt 120 passes through motor drive it and carries out the conveying granule. Specifically, the motor is fixed on the housing 110, a power output shaft of the motor is fixedly connected with a rotating shaft of the transmission belt 120, and the surface of the transmission belt 120 is provided as a friction surface, so that particles cannot slide relatively on the transmission belt 120. The particles passing through the third screen 230 pass through the discharge port 113 and then directly enter the belt 120, and the belt 120 is driven by the motor to convey the particles passing through the third screen 230 to the next screening module casing 110. The third sieve plate 230 is provided with a third sieve pore 231 which penetrates through the third sieve plate from top to bottom, the pore size of the third sieve pore 231 is the same as that of the first sieve pore 211, and in any two adjacent levels of screening assemblies, the pore size of the first sieve pore 211 of the next level of screening assembly is larger than that of the first sieve pore 211 of the previous level of screening assembly.

The guide unit includes first deflector 310, second deflector 320 and third deflector 330, specifically, first deflector 310 slope sets up between first sieve 210 and third sieve 230, the inclination of first deflector 310 is the same with the inclination of third sieve 230, and both ends all pass through first elastic component fixed connection about both ends and first sieve 210 about first deflector 310, further, first elastic component is first expansion plate 311, first expansion plate 311 has first fixed part and first sliding part, the vertical setting of first fixed part, first fixed part upper end fixed connection in first sieve 210, the vertical setting of first sliding part, first sliding part lower extreme fixed connection in first deflector 310, lead to first spring 314 fixed connection between first fixed part and the first sliding part. The right end of the first guide plate 310 is communicated with the discharge port 113 of the casing 110, passes through the first sieve hole 211 on the first sieve plate 210, and is guided by the first guide plate 310, so that the particles are discharged out of the casing 110 through the discharge port 113, and are collected outside the discharge port 113 of the casing 110.

The second deflector 320 is fixedly arranged below the second sieve plate 220, the second deflector 320 is obliquely arranged, the inclination angle of the second deflector 320 is the same as that of the third sieve plate 230, and the right end of the second deflector 320 is fixedly and smoothly connected to the left end of the third sieve plate 230, so that particles directly enter the third sieve plate 230 after passing through the second sieve plate 220, and the particle screening accuracy is improved. A second buffer plate 321 is fixedly arranged between the second guide plate 320 and the second screening deck 220, the second buffer plate 321 is obliquely arranged, the inclination angle of the second buffer plate 321 is the same as that of the second screening deck 220, and the second buffer plate 321 is fixedly connected to the side wall of the screening chamber 111.

Third deflector 330 slope sets up in the below of third sieve 230, the inclination of third deflector 330 is the same with the inclination of third sieve 230, and both ends all pass through second elastic component fixed connection with the left and right sides both ends of third sieve 230 about third deflector 330, furthermore, the second elastic component is second expansion plate 331, second expansion plate 331 has second fixed part and second sliding part, the vertical setting of second fixed part, second fixed part upper end fixed connection is in third sieve 230, the vertical setting of second sliding part, second sliding part lower extreme fixed connection is in third deflector 330, lead to second spring 334 fixed connection between second fixed part and the second sliding part. The right end of the third guiding plate 330 is communicated with the discharging port 113 of the casing 110, passes through the third screen hole 231 on the third screen plate 230 and then is guided by the third guiding plate 330, so that the particles are discharged out of the casing 110 through the discharging port 113 and collected outside the discharging port 113 of the casing 110.

The cleaning unit comprises a first cleaning disc group and a second cleaning disc group, the first cleaning disc group comprises a first fixing disc 410 and a first sliding disc 420, the first fixing disc 410 is parallel and fixedly arranged below the first sieve plate 210, the right end of the first fixing disc 410 is fixedly connected with a first fixing part, the first sliding disc 420 is parallel and arranged below the first fixing disc 410, first cleaning rods 421 with the same number as the first sieve holes 211 are fixedly arranged on the first sliding disc 420, when the first sliding disc 420 slides upwards, the first cleaning rods 421 penetrate through the first fixing plate to enter the first sieve holes 211, in an initial state, the upper end of each first cleaning rod 421 is in a smooth state on the upper surface of the first fixing disc 410, particles fall on the first fixing disc 410 after penetrating through the first sieve holes 211, and the first fixing disc 410 buffers the particles.

The second cleaning disc set comprises a second fixed disc 430 and a second sliding disc 440, the second fixed disc 430 is parallel and fixedly arranged below the third sieve plate 230, the left end of the second fixed disc 430 is fixedly connected to the second fixing portion, the second sliding disc 440 is parallel arranged below the second fixed disc 430, second cleaning rods 441 with the same number as the third sieve holes 231 are fixedly arranged on the second sliding disc 440, and when the second sliding disc 440 slides upwards, the second cleaning rods 441 penetrate through the second fixed disc 430 and enter the third sieve holes 231. In an initial state, the upper end of the second cleaning rod 441 is in a smooth state on the upper surface of the second fixed disk 430, so that the particles pass through the third sieve holes 231 and then fall on the second fixed disk 430, and the second fixed disk 430 buffers the particles.

In this embodiment, the transmission unit is used to drive the first sliding tray 420 and the second sliding tray 440 to simultaneously clean the first screening deck 210 and the third screening deck 230. Specifically, the transmission unit includes a first transmission unit, the first transmission unit includes a first fixing rod 510, a second fixing rod 520, a first sliding rod 530 and a trigger swing rod 540, the first fixing rod 510 is vertically disposed, and the middle of the first fixing rod 510 slidably penetrates through the first guide plate 310, the third screen plate 230 and the second fixing plate 430, so that two ends of the first fixing rod 510 are respectively and fixedly connected to the first sliding plate 420 and the second sliding plate 440. Further, two first fixing rods 510 are provided, and the two fixing rods are respectively provided at front and rear sides of the first sliding tray 420 and the second sliding tray 440.

The second fixing rod 520 extends horizontally and is arranged in a front-back manner, and two ends of the second fixing rod 520 are fixedly connected to the front side wall and the back side wall of the screening chamber 111. The triggering swing rod 540 is T-shaped, so that the triggering swing rod 540 has a first section extending left and right and a second section extending front and back, the left end of the first section is vertically and fixedly connected with the middle of the second section, the right end of the first section of the triggering swing rod 540 is abutted against the lower end surface of the first sliding disk 420, the middle of the first section of the triggering swing rod 540 is rotatably connected to the second fixing rod 520, and the triggering swing rod 540 can swing around the second fixing rod 520. Two first slide ways 422 with downward openings are arranged on the lower end face of the first slide plate 420, and the first slide ways 422 extend left and right. The number of the first sliding rods 530 is two, the two first sliding rods 530 are vertically and telescopically arranged, the upper end of each first sliding rod 530 slides along a first slide way 422, and the middle parts of the two first sliding rods 530 are rotatably connected to the front end part and the rear end part of the second section of the trigger swing rod 540, so that the included angle between the first sliding rods 530 and the second section of the trigger swing rod 540 is changed.

In this embodiment, the transmission unit further includes a second transmission portion for driving the first sliding rod 530 to slide along the first sliding channel 422 and driving the triggering swing rod 540 to push the first sliding tray 420 to move upward. Specifically, the second transmission part includes a second slide lever 550, a first hinge lever 580, and a third slide lever 570. The number of the second sliding rods 550 is two, the upper end of each second sliding rod 550 is slidably sleeved on the lower portion of one first sliding rod 530, and the lower ends of the two second sliding rods 550 are fixedly connected by a connecting rod 560 extending back and forth. The number of the third sliding rods 570 is two, two of the third sliding rods 570 are vertically arranged, the lower ends of the two third sliding rods 570 are fixedly connected to the third guide plate 330, and the upper ends of the two third sliding rods 570 slidably penetrate through the third screen plate 230.

Two third slide ways are arranged on the first guide plate 310, and the two third slide ways are arranged on the front side and the rear side of the first guide plate 310. And a third fixing rod is arranged in each third slide way. The first hinge rods 580 are provided in two, one first hinge rod 580 is provided between one third sliding rod 570 and the front end of the connecting rod 560, and the other first hinge rod 580 is provided between one third sliding rod 570 and the rear end of the connecting rod 560, respectively. Specifically, a second sliding channel is formed in the middle of the first hinge rod 580, the second sliding channel penetrates through the first hinge rod 580 in a front-rear direction, the third fixing rod is slidably and rotatably disposed in the second sliding channel, such that the first hinge rod 580 slides and rotates along the third sliding channel, the upper end of the first hinge rod 580 is hinged to both ends of the first connecting rod 560, the lower end of the first hinge rod 580 is hinged to the upper end of the second sliding rod 550, when the amount of deformation of the first spring 314 is decreased and the amount of deformation of the second spring 334 is increased, the distance between the first guide plate 310 and the third guide plate 330 is increased, so that the first hinge rod 580 swings right and downward, the first sliding rod 530 is driven to slide right along the first slideway 422, the second section of the trigger swing rod 540 is pushed to swing counterclockwise, the right end of the first section of the trigger swing rod 540 pushes the first sliding plate 420 to move upward, meanwhile, the second sliding tray 440 moves upward, and the first sieve holes 211 and the third sieve holes 231 are cleaned from bottom to top by the first sliding tray 420 and the second sliding tray 440.

With the above embodiments, the usage principle and the working process of the present invention are as follows:

during operation, add solid particle waste from one-level screening subassembly medium casing 110's feed inlet 112, solid particle passes through first sieve 210 in proper order, second sieve 220 and third sieve 230, according to the granule volume that falls on first deflector 310 and third deflector 330 in unit interval, judge the jam degree of first sieve 210 and second sieve 220, and in time drive first sliding tray 420 and second sliding tray 440 clear up first sieve 210 and then third sieve 230, improve the efficiency of screening the granule.

When particles enter the screening chamber 111 through the inlet 112 of the housing 110 at a constant speed, the particles firstly pass through the first screening plate 210, the particles with smaller diameters pass through the first screening holes 211 of the first screening plate 210, fall on the first fixed disk 410 for buffering, gradually fall on the first guide plate 310 along the inclination angle of the first fixed disk 410, and under the guiding action of the first guide plate 310, the particles passing through the first screening plate 210 are discharged from the outlet 113 of the housing 110.

The remaining particles gradually enter the second sieve plate 220, and since the diameter of the second sieve hole 221 on the second sieve plate 220 is larger, all the particles can pass through the second sieve hole 221, fall on the second buffer plate 321 to buffer the particles, and according to the inclination angle of the second buffer plate 321, the particles gradually slide to the upper end of the second guide plate 320, since the inclination angle of the second guide plate 320 is the same as that of the third sieve plate 230, and one end of the second guide plate 320 is smoothly connected with the upper end of the third sieve plate 230. The particles gradually enter the third sieve plate 230 under the guidance of the second guide plate 320, and because the aperture size of the third sieve hole 231 of the third sieve plate 230 is the same as that of the first sieve hole 211, the particles cannot pass through the first sieve hole 211, and when passing through the third sieve hole 231 again, the particles pass through the third sieve hole 231 and fall on the second fixed disk 430, and gradually fall on the third guide plate 330 under the guidance of the second fixed disk 430, and under the action of the inclination angle of the third guide plate 330, the particles are mixed with the particles discharged from the first guide plate through the discharge hole 113. The rest of the particles with larger diameter gradually pass through the feed port from the lower end of the third screen plate 230 and then enter the transmission belt 120, and the particles with larger diameter enter the feed port 112 of the next-stage screening assembly housing 110 again under the driving of the motor.

When the degree to which the first spring 314 is stretched is decreased and the degree to which the second spring 334 is stretched is increased, the particles entering the first guide plate 310 at this time are decreased with respect to the normal state, and the particles entering the third guide plate 330 are increased with respect to the normal state. The amount of downward movement of the third guide plate 330 increases, the first guide plate 310 moves upward by a distance due to the first spring 314, the third guide plate 330 pulls the third sliding rod 570 to slide downward, the middle portion of the first hinge rod 580 slides and rotates along the third fixing rod, and the downward movement of the third sliding rod 570 deflects the upper end of the first hinge rod 580 to the right. The upper end of the first hinge rod 580 is rotatably connected to the connecting rod 560, the connecting rod 560 is vertically and fixedly connected to the lower end of the second sliding rod 550, the upper end of the second sliding rod 550 is vertically and slidably connected to the lower end of the first sliding rod 530, the upper end of the first sliding rod 530 slides along the first slideway 422 at the lower end of the first sliding disk 420, the first sliding rod 530 is telescopically arranged, the lower part of the first sliding rod 530 is rotatably connected with the second section of the trigger swing rod 540, the second section of the trigger swing rod 540 is fixedly connected with the first section, and the first section is rotatably connected with the second fixing rod 520. When the upper end of the first hinge rod 580 swings rightwards, the first sliding rod 530 is extended, the upper end of the first sliding rod 530 slides rightwards along the first slide way 422, the first sliding rod 530 pushes the second section of the trigger swing rod 540 to move rightwards, the first section of the trigger swing rod 540 swings, the first sliding disc 420 abutted to the right end of the first section of the trigger swing rod 540 is extruded to slide upwards, the first cleaning rod 421 fixedly arranged on the first fixed disc 410 penetrates through the first fixed disc 410, and the upper end of the first cleaning rod 421 gradually enters the first sieve hole 211 to clean particles blocking the first sieve hole 211. First dead lever 510 of fixedly connected with between first sliding tray 420 and the second sliding tray 440 makes second sliding tray 440 upwards slide in step, and the last fixed second clearance pole 441 that is provided with of second sliding tray 440, second clearance pole 441 upwards slide and pass second fixed disk 430 back, and the upper end of second clearance dish gets into gradually in third sieve mesh 231, carries out synchronous clearance to the granule in the third sieve mesh 231.

When the first screening deck 210 is not clogged with particles, the amount of particles entering the first guide plate 310 is in agreement with the ratio of the amount of particles entering the third guide plate 330, and the amount of deformation of the first spring 314 is in agreement with the amount of deformation of the second spring 334 due to the predetermined ratio of the stiffness coefficients of the first spring 314 and the second spring 334.

When the amount of the particles entering the first guide plate 310 is increased and the amount of the particles entering the third guide plate 330 is decreased, the particles that can pass through the first sieve hole 211 or the third sieve hole 231 largely pass through the first sieve plate 210, so that the degree of the first spring 314 being stretched is increased and the degree of the second spring 334 being stretched is decreased, and then the distance between the first guide plate 310 and the third guide plate 330 is decreased, so that the first guide plate 310 slides downward for a certain distance, because the second slide way on the first hinge rod 580 is slidably and rotatably connected with the third fixing rod on the first guide plate 310. Under the downward pressing of the first guiding plate 310, the upper end of the first hinge rod 580 deflects left and downward, meanwhile, the first hinge rod 580 drives the second sliding rod 550 to slide downward along the first sliding rod 530 through the connecting rod 560, the leftward deflection of the first hinge rod 580 pushes the first sliding rod 530 to slide leftward along the first slideway 422, the first sliding rod 530 pulls the second section of the trigger swing rod 540 rotatably connected to the middle portion to move leftward, and under the rotating connection of the first section of the trigger swing rod 540 and the second fixing rod 520, the second section of the trigger swing rod 540 deflects upward, so that the right end of the first section of the trigger swing rod 540 deflects downward, and at this time, the first screen plate 210 is not cleaned.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a solid useless resource recycle screening plant which characterized in that: the method comprises the following steps:

the multi-stage screening assemblies are arranged at intervals, and a driving belt is arranged between every two adjacent stages of screening assemblies;

each stage of screening assembly comprises a shell, a screening unit, a guide unit and a cleaning unit;

the shell is provided with a screening cavity and a feeding hole and a discharging hole;

the screening unit comprises a first inclined screening plate, a second inclined screening plate and a third inclined screening plate, particles sequentially pass through the first inclined screening plate, the second inclined screening plate and the third inclined screening plate, the aperture of a first screening hole formed in the first inclined screening plate is the same as that of a third screening hole formed in the third inclined screening plate, and a transmission belt is arranged between the third inclined screening plate and a feeding hole of an adjacent next-stage screening assembly shell through a discharging hole;

the guide unit comprises a first guide plate, a second guide plate and a third guide plate, the first guide plate is fixedly arranged below the first sieve plate through a first elastic piece, and one end of the first guide plate is communicated with the discharge hole; the second guide plate is fixedly arranged below the second sieve plate and is smoothly connected with the third sieve plate; the third guide plate is fixedly arranged below the third sieve plate through a second elastic piece, and one end of the third guide plate is communicated with the discharge hole;

the cleaning unit comprises a first cleaning disc group and a second cleaning disc group, the first cleaning disc group is arranged between the first guide plate and the first sieve plate, the second cleaning disc group is arranged between the third guide plate and the third sieve plate, the second cleaning disc group is in transmission connection with the first cleaning disc group through the transmission unit, and when the deformation amount of the first elastic element is reduced and the deformation amount of the second elastic element is increased, the first cleaning disc group and the second cleaning disc group can simultaneously clean the first sieve plate and the third sieve plate from bottom to top.

2. The solid waste resource recycling and screening device of claim 1, wherein: first clearance dish group includes first fixed disk and first slip dish, and first fixed disk is parallel and fixed to be set up in the below of first sieve, and first slip dish parallel arrangement is in first fixed disk below, and fixed being provided with on the first slip dish has the first clearance pole the same with first sieve mesh number, and when first slip dish slided upwards, first clearance pole runs through first fixed plate and gets into in the first sieve mesh.

3. The solid waste resource recycling and screening device of claim 2, wherein: the second cleaning disc group comprises a second fixed disc and a second sliding disc, the second fixed disc is parallel and fixedly arranged below the third sieve plate, the second sliding disc is parallel and arranged below the second fixed disc, second cleaning rods with the same number as the third sieve holes are fixedly arranged on the second sliding disc, and when the second sliding disc slides upwards, the second cleaning rods penetrate through the second fixed disc and enter the third sieve holes.

4. The solid waste resource recycling and screening device of claim 3, characterized in that: the transmission unit comprises a first transmission part and a second transmission part; the first transmission part comprises a first fixed rod, a second fixed rod, a first sliding rod and a trigger swing rod; two ends of the first fixed rod are respectively and fixedly connected with the first sliding disc and the second sliding disc; the second fixed rod is fixedly connected to the side wall of the screening cavity; the middle part of the trigger swing rod can swing around the second fixed rod, and one end of the trigger swing rod is abutted against the lower end face of the first sliding disc; a first slide way with a downward opening is arranged on the lower end face of the first sliding disc and is arranged between the upper end and the lower end of the first sliding disc; the first sliding rod is vertically and telescopically arranged, one end of the first sliding rod can be arranged along the first slide way in a sliding mode, and the middle of the first sliding rod is rotatably connected to the trigger swing rod;

the second transmission part is used for enabling the first sliding rod to slide along the first slideway and driving the trigger swing rod to push the first sliding disc to move upwards when the deformation amount of the first elastic piece is reduced and the deformation amount of the second elastic piece is increased.

5. The solid waste resource recycling and screening device of claim 4, wherein: the second transmission part comprises a second sliding rod, a first hinge rod and a third sliding rod; the second sliding rod is slidably sleeved at the lower part of the first sliding rod; the lower end of the third sliding rod is fixedly connected with the third guide plate; a third slideway is arranged on the first guide plate, and a third fixed rod is fixedly arranged in the third slideway; the second slide has been seted up at first articulated rod middle part, and the third dead lever slides and sets up in the second slide with rotating, makes first articulated rod slide and rotate along the third slide, and the one end of first articulated rod articulates in the lower extreme of second slide bar, and the other end of first articulated rod articulates in the upper end of second slide bar.

6. The solid waste resource recycling and screening device of claim 5, wherein the device comprises: the inclination angles of the first sieve plate and the second sieve plate are the same, the lower end of the first sieve plate is fixedly connected with the upper end of the second sieve plate, and the diameter of a second sieve hole of the second sieve plate is larger than that of a first sieve hole of the first sieve plate; the third sieve is fixedly arranged below the first sieve, and the inclination angle of the third sieve is opposite to that of the first sieve.

7. The solid waste resource recycling and screening device of claim 6, wherein: the pore sizes of the second sieve pores of the second sieve plate in any two-stage screening assembly are the same and are larger than the maximum diameter of the particles to be screened; the diameter of a first sieve hole of a first sieve plate in a next-stage screening assembly of the adjacent two-stage screening assembly is larger than that of a first sieve hole of a first sieve plate in a previous-stage screening assembly.